3AH3 Vacuum Circuit-Breakers - Siemens

3AH3 Vacuum Circuit-Breakers

Medium-Voltage Equipment
Selection and Ordering Data
Catalog HG 11.03 · 2010

Answers for energy.

3AH3 Vacuum Circuit-Breakers R-HG11-172.tif
2 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Contents

Contents Page

3AH3 Vacuum Description 5 1
Circuit-Breakers
General 6
Medium-Voltage Equipment
Catalog HG 11.03 · 2010 Construction and mode of operation, standards, 7
maintenance-free design
Invalid: Catalog HG 11.03 · 2008 9
Ambient conditions, current carrying capacity 10
and dielectric strength

Product range overview and basic equipment

Equipment Selection 11

2Ordering data and configuration example 12

Selection of basic types, circuit-breakers 13

Selection of secondary equipment 17

Selection of additional equipment 24

Accessories and spare parts 25

Technical Data 27

Electrical data, dimensions and weights 328
Circuit diagrams
Operating times, short-circuit protection 42
of motors, consumption data of releases
44

Annex 45 4

Inquiry form 46
Configuration instructions 47
Configuration aid Foldout page

Siemens HG 11.03 · 2010 3

3AH3 Vacuum Circuit-Breakers R-HG11-173.tif
4 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Description
Industrial application: Refinery
Contents

R-HG11-174.tif Contents Page

Description 5

General 16

Construction and mode of operation: 7
Switching medium 7
Pole assemblies 7
Operating mechanism box 7
Operating mechanism 7
Trip-free mechanism 8
Releases 8
Closing 8
Circuit-breaker tripping signal 8
Interlocking 8
Standards 8
Maintenance-free design 9
Ambient conditions 9
Current carrying capacity 9
Dielectric strength 10
Product range overview 10
Basic equipment

Siemens HG 11.03 · 2010 5

Description 3AH3 Vacuum Circuit-Breakers

General

3AH3 vacuum circuit-breaker from 7.2 kV to 36 kV – The Powerful

1 Circuit-breakers must make and break all currents within controlling all fault conditions in the power system at the
the scope of their ratings: From small inductive and same time.

capacitive load currents up to high short-circuit currents,

3AH3 – maintenance-free for high switching capacities

R-HG11-204.tif
R-HG11-216.tif

The 3AH3 vacuum circuit-breaker is maintenance-free Due to its high capacity, the circuit-breaker is especially
throughout its entire service life. It is extremely powerful suitable for generator operation and industrial applications.
and controls up to 10,000 operating cycles. This circuit- The high-current and generator circuit-breakers 3AH37 and
breaker is used for high load currents up to 6300 A and high 3AH38 meet the requirements of IEEE Std C37.013.
short-circuit currents up to 72 kA. It covers the common
medium-voltage range from 7.2 kV to 36 kV.

6 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Description

Construction and mode of operation

The vacuum circuit-breaker consists of the pole assemblies 1
(1) and the operating mechanism box (2). The pole assem-
blies are fixed to the operating mechanism box via post Circuit-breaker structure
insulators (3). The switching movement is transferred by
means of operating rods (4) and levers. 1 Pole assembly
2 Operating mechanism box
Switching medium 3 Post insulator
4 Operating rod
The vacuum switching technology, proven and fully 5 Upper interrupter support
developed for more than 30 years, serves as arc-quenching 6 Vacuum interrupter
principle by using vacuum interrupters. 7 Lower interrupter support

Pole assemblies R-HG11-191.tif

The pole assemblies consist of the vacuum interrupters (6) Front view
and the interrupter supports. The vacuum interrupters are
air-insulated and freely accessible. This makes it possible to R-HG11-192.tif
clean the insulating parts easily in adverse ambient condi-
tions. The vacuum interrupter is mounted rigidly to the upper Open operating mechanism box
interrupter support (5). The lower part of the interrupter is
guided in the lower interrupter support (7), allowing axial Siemens HG 11.03 · 2010 7
movement. The braces absorb the external forces resulting
from switching operations and the contact pressure.

Operating mechanism box

The whole operating mechanism with releases, auxiliary
switches, indicators and actuating devices is accommodated
in the operating mechanism box. The extent of the second-
ary equipment depends on the case of application and offers
a multiple variety of options in order to meet almost every
requirement.

Operating mechanism

The operating mechanism is a stored-energy mechanism.
The closing spring is charged either electrically or manually.
It latches tight at the end of the charging process and serves
as an energy store. The force is transmitted from the operat-
ing mechanism to the pole assemblies via operating rods.

To close the breaker, the closing spring can be unlatched
either mechanically by means of the local “ON” pushbutton
or electrically by remote control. The closing spring charges
the opening or contact pressure springs as the breaker
closes. The now discharged closing spring will be charged
again automatically by the mechanism motor or manually.
Then the operating sequence OPEN-CLOSE-OPEN is stored
in the springs. The charging state of the closing spring can
be checked electrically by means of a position switch.

Trip-free mechanism

3AH3 vacuum circuit-breakers have a trip-free mechanism
according to IEC 62271-100. In the event of an opening
command being given after a closing operation has been
initiated, the moving contacts return to the open position
and remain there even if the closing command is sustained.
This means that the contacts of the vacuum circuit-breakers
are momentarily in the closed position, which is permissible
according to IEC 62271-100.

Description 3AH3 Vacuum Circuit-Breakers

Construction and mode of operation, standards, maintenance-free design

Releases If constant CLOSE and OPEN commands are present at the

A release is a device which transfers electrical commands from circuit-breaker at the same time, the circuit-breaker will return

an external source, such as a control room, to the latching to the open position after closing. It remains in this position

mechanism of the vacuum circuit-breaker so that it can be until a new CLOSE command is given. In this manner,

opened or closed. Apart from the closing solenoid, the continuous closing and opening (= “pumping”) is prevented.

1 maximum possible equipment is one shunt release and two Circuit-breaker tripping signal
other releases. For release combinations, refer to page 17. The NO contact makes brief contact while the vacuum

• The closing solenoid unlatches the charged closing spring circuit-breaker is opening, and this is often used to operate

of the vacuum circuit-breaker, closing it by electrical means. a hazard-warning system which, however, is only allowed to

It is suitable for DC or AC voltage. respond to automatic tripping of the circuit-breaker. There-

• Shunt releases are used for automatic tripping of vacuum fore, the signal from the NO contact must be interrupted

circuit-breakers by suitable protection relays and for deliber- when the circuit-breaker is being opened intentionally. This

ate tripping by electrical means. They are intended for con- is accomplished under local control with the cut-out switch

nection to an external power supply (DC or AC voltage) but, that is connected in series with the NO contact.

in special cases, may also be connected to a voltage trans- Interlocking
former for manual operation.
Electrical interlocking
• Current-transformer operated releases comprise a stored-
energy mechanism, an unlatching mechanism and an electro- The circuit-breakers can be integrated in electromagnetic
magnetic system. They are used when there is no external feeder or switchgear interlocks. In case of electrical inter-
source of auxiliary power (e.g. a battery). Tripping is effected locking, the disconnector or its operating mechanism is
by means of a protection relay (e.g. overcurrent-time protec- equipped with a magnetic lock-out mechanism. This mecha-
tion) acting on the current-transformer operated release. nism is controlled by an auxiliary contact of the circuit-breaker,
When the tripping current is exceeded (= 90 % of the rated so that the disconnector can only be operated when the circuit-
normal current of the c.t.-operated release), the latch of the breaker is open. On the other hand, the circuit-breaker is also
energy store, and thus opening of the circuit-breaker, is controlled by the disconnector or its operating mechanism, so
released. that it can only be closed when the disconnector is in an end
position. For this purpose, manual electrical closing must be pro-
• Undervoltage releases comprise a stored-energy mecha- vided in the circuit-breaker operating mechanism (see “Closing”).
nism, an unlatching mechanism and an electromagnetic system
which is permanently connected to the secondary or auxiliary Mechanical interlocking

voltage while the vacuum circuit-breaker is closed. If the To interlock circuit-breaker trucks, withdrawable parts or

voltage falls below a predetermined value, unlatching of the disconnectors according to the switch position, the circuit-

release is enabled and the circuit-breaker is opened via the breakers can be equipped with a mechanical interlocking.

stored-energy mechanism. The deliberate tripping of the A sensor at the switchgear checks the position of the circuit-

undervoltage release generally takes place via an NC contact in breaker and prevents the open circuit-breaker in a reliable

the tripping circuit or via an NO contact by short-circuiting the way from being closed mechanically and electrically.

magnet coil. With this type of tripping, the short-circuit current Standards
is limited by the built-in resistors. Undervoltage releases can 3AH3 circuit-breakers conform to the following standards:
also be connected to voltage transformers. When the operating

voltage drops to impermissibly low levels, the circuit-breaker is • IEC 62271-100 (former IEC 60056)

tripped automatically. • IEC 62271-1 (former IEC 60694)

For delayed tripping, the undervoltage release can be com- • VDE 0671 (former VDE 0670)
bined with energy stores. • IEEE Std C37.013 (only generator circuit-breaker)

Closing All 3AH3 vacuum circuit-breakers fulfil the endurance classes
E2, M2 and C2 according to IEC 62271-100.
In the standard version, 3AH3 vacuum circuit-breakers can be
remote-closed electrically. They can also be closed locally by Maintenance-free design

mechanical unlatching of the closing spring via pushbutton. The 3AH3 vacuum circuit-breakers are maintenance-free:

Instead of this “manual mechanical closing”, “manual elec- • Under normal ambient conditions according to
trical closing” is also available. In this version, the closing IEC 62271-1 (former IEC 60694)
circuit of the circuit-breaker is controlled electrically by a
pushbutton instead of the mechanical button. In this way, • Up to 10,000 operating cycles,
switchgear-related interlocks can also be considered for local – no relubrication, no readjustment required
operation in order to prevent involuntary closing. – and within their tolerances, the characteristics are

independent of the switching rate or of standing times
without switching operations.

8 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Description

Ambient conditions, current carrying capacity and dielectric strength

Ambient conditions

The vacuum circuit-breakers are designed for the normal
operating conditions defined in IEC 62271-100.

Condensation can occasionally occur under the ambient 40°C 1
conditions shown opposite. 3AH3 vacuum circuit-breakers max. 95% per day
are suitable for use in the following climatic classes max. 90% per month
according to IEC 60721, Part 3-3:
-5°C
Climatic ambient conditions: Class 3K4 1)
Biological ambient conditions: Class 3B1 HG11-2515a_en eps
Mechanical ambient conditions: Class 3M2
Chemically-active substances: Class 3C2 2)
Mechanically-active substances: Class 3S2 3)

1) Low temperature limit: – 5 °C
2) Without icing and wind-driven precipitation
3) Restriction: Clean insulation parts

Current carrying capacity Rated normal current 7000
A
The rated normal currents specified in the opposite diagram HG11-2558b_en eps
have been defined according to IEC 62271-100 for an am- 6000
bient air temperature of + 40 °C and apply to open switch- 7
gear. For enclosed switchgear the data of the switchgear
manufacturer applies. At ambient air temperatures below 5000
+ 40 °C, higher normal currents can be carried (see diagram): 4000 6

Characteristics curve 1 = Rated normal current 1250 A 5
Characteristics curve 2 = Rated normal current 2000 A 3000
Characteristics curve 3 = Rated normal current 2500 A
Characteristics curve 4 = Rated normal current 3150 A 4
Characteristics curve 5 = Rated normal current 4000 A 2000 3
Characteristics curve 6 = Rated normal current 5000 A
Characteristics curve 7 = Rated normal current 6300 A 2
1000 1
Dielectric strength Altitude correction factor
0
The dielectric strength of air insulation decreases with 10 20 30 40 50 60 °C 70 HG11-2517c_en eps
increasing altitude due to low air density. According to Ambient air temperature
IEC 62271-1, the values of the rated lightning impulse
withstand voltage and the rated short-duration power- 1.50
frequency withstand voltage specified in the chapter
“Technical Data” apply to a site altitude of 1000 m above 1.40
sea level. For an altitude above 1000 m, the insulation level
must be corrected according to the opposite diagram. 1.30

The characteristic shown applies to both rated withstand 1.20
voltages.
1.10
To select the devices, the following applies:
1.00
U W U0 x Ka 1000 1500 2000 2500 3000 3500 m 4000
Site altitude
U Rated withstand voltage under reference atmosphere
U0 Rated withstand voltage requested for the place of installation Siemens HG 11.03 · 2010 9
Ka Altitude correction factor according to the opposite diagram

Example

For a requested rated lightning impulse withstand voltage
of 75 kV at an altitude of 2500 m, an insulation level of
90 kV under reference atmosphere is required as a minimum:

90 kV W 75 kV x 1.2

Description 3AH3 Vacuum Circuit-Breakers

Product range overview and basic equipment

Product range overview

Rated voltage Rated normal current (A)
Rated short-
circuit breaking 1250 2000 2500 3150 4000 5000 6300
current
Pole-centre distance (mm)

1 kV kA 210 275 350 350 210 275 350 210 275 350 275 300 350 300 300
7.2
50 í íí í
12 63 í íí í
15 50 í
17.5 63 í íí í
50 í íí í
24 63 í
50 í íí í̆ ̆ ̆
36 63 í íí í̆ ̆ ̆
40.5 1) 72 ̆ ̆̆
40 í í í̆
50 í í í̆ í ̆ ̆ 2) ̆ 2)
63 ̆ ̆ ̆ 2) ̆ 2)
72 í ̆ ̆ 2) ̆ 2)
31.5 í̆ í
40 ̆ í
31.5 ̆ í
40 íí í í í
íí
íí í í
íí

1) As 36 kV circuit-breaker with supplement Y09 í 3AH3
2) Pole-centre distance 350 mm ̆ 3AH37/3AH38 high-current and generator circuit-breakers (according to IEEE Std C37.013)

Basic equipment Minimum equipment Alternative equipment Remarks

Features Electrical operating mecha- Manual operating mechanism Hand crank available
nism (hand crank not includ- (hand crank included in the scope of supply) as accessory
Operating mechanism ed in the scope of supply)
Closing solenoid and Manual electrical closing –
Closing manual mechanical closing
Shunt release None –
1st release Without Shunt release, Max. 3 releases can be combined
2nd release undervoltage release, (for possible combinations,
Without c.t.-operated release refer to page 17)
3rd release Shunt release, Max. 3 releases can be combined
Installed for Ն 60 V DC undervoltage release, (for possible combinations,
Varistor circuit c.t.-operated release refer to page 17)
6 NO + 6 NC None For limiting switching overvoltages
Auxiliary switch 24-pole terminal strip due to inductive loads
Plug connector 12 NO + 12 NC –
Available 24-pole plug, –
Anti-pumping Available 64-pole plug
Circuit-breaker None –
tripping signal Available None –
Operating cycle counter Available
“Spring charged” None –
signal and indication Without None –
Interlocking
Mechanical interlocking –

10 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection
3AH3 vacuum circuit-breaker (4000 A)
3AH37 generator circuit-breaker Contents

Contents Page 2

Equipment Selection 11

Ordering data and configuration example 12

Selection of basic types, circuit-breakers: 13
Voltage level 7.2 kV 13
Voltage level 12 kV 14
Voltage level 15 kV 14
Voltage level 17.5 kV 15
Voltage level 24 kV 15
Voltage level 36 kV

R-HG11-194.eps High-current and generator circuit-breakers 16
according to IEEE C37.013: 16
Voltage level 17.5 kV
Voltage level 24 kV

Selection of secondary equipment: 17
Release combination 18
Operating voltage, closing solenoid 19
Operating voltage, 1st shunt release 20
Operating voltage, 2nd release 21
Operating voltage, 3rd release 22
Operating voltage of the operating mechanism
Auxiliary switch, secondary connection, 23
interlocking 23
Languages and frequency

Selection of additional equipment 24
Accessories and spare parts 25

R-HG11-217.eps

Siemens HG 11.03 · 2010 11

Equipment Selection 3AH3 Vacuum Circuit-Breakers

Ordering data and configuration example

Order number structure Special versions («)

The 3AH3 vacuum circuit-breakers consist of a primary and a In case of special versions, “-Z” is added to the order number
secondary part. The relevant data make up the 16-digit order and a descriptive order code follows. If several special versions
number. The primary part covers the main electrical data of are required, the suffix “-Z” is listed only once. If a requested
the circuit-breaker poles. The secondary part covers the aux- special version is not in the catalog and can therefore not be
iliary devices which are necessary for operating and control- ordered via order code, it has to be identified with Y 9 9 after
ling the vacuum circuit-breaker. consultation. The agreement hereto is made directly between
your responsible sales partner and the order processing
Order codes department in the Switchgear Factory Berlin.

Individual equipment versions, marked with 9 or Z in the
9th to 16th position, are explained more in detail by a 3-digit
order code. Several order codes can be added to the order
number in succession and in any sequence.

2 a: alphabetical n: numerical

1st position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
2nd position Order No.:
3rd position 3 A H 3 n n n – n a a n n – n a a n –« n n n
4th to 8th position
Primary part
9th to 16th position
Superior group
Switching devices

Main group
Circuit-breaker

Subgroup
Circuit-breaker type series

Basic equipment
Design and ratings
primary part

Secondary part

Secondary equipment
Operating mechanism, releases, operating
voltages and further auxiliary equipment

Order codes

Group of 3 after the Order No.
Format: a n a

Special versions («)

Initiated with “-Z”
Group of 3 after the Order No.
Format: a n n

Configuration example On the foldout page we offer a configuring aid.
Here you can fill in the order number you have deter-
In order to simplify the selection of the correct order number mined for your circuit-breaker.
for the requested circuit-breaker type, you will find a con-
figuration example on each page of the chapter “Equipment
Selection”. For the selection of the secondary part, always the
last example of the primary part was taken over and continued,
so that at the end of the equipment selection (page 24) a
completely configured circuit-breaker results as an example.

Example for Order No.: 3 AH3 1 1 7 – 7nnnn–nnnn
Order codes:

12 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection

Selection of basic types, circuit-breakers

7.2 kV Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Order No.:
50/60 Hz 3 AH 3nnn–nnnnn – nnnn –« nnn

Rated voltage
Rated lightning impulse
withstand voltage
Rated short-duration
power-frequency
withstand voltage
Rated short-circuit
breaking current
at 36 % DC component
Rated short-circuit
making current
(at 50/60 Hz)
Pole-centre distance
Rated normal current
See page 17
See page 18
See page 19
See page 20
See page 21
See page 22
See page 23
See page 23
See page 24

Ur Up Ud Isc Ima Ir 2
kV kV kV kA kA mm
7.2 60 20 50 125/130 210 A

275 1250 3 A H 3 0 5 7 – 2
63 160/164 275 2500 3 A H 3 0 5 7 – 6
3150 3 A H 3 0 5 7 – 7
Special version (available for all 7.2 kV circuit-breakers) 4000 1) 3 A H 3 0 7 7 – 8
Ud = 32 kV 1250 3 A H 3 0 7 8 – 2
2500 3 A H 3 0 7 8 – 6
3150 3 A H 3 0 7 8 – 7
4000 1) 3 A H 3 0 7 8 – 8

–Z E16

12 kV Ir

50/60 Hz

Ur Up Ud Isc Ima

kV kV kV kA kA mm A

12 75 28 50 125/130 210 1250 3 A H 3 1 1 7 – 2

2500 3 A H 3 1 1 7 – 6

3150 3 A H 3 1 1 7 – 7

275 4000 1) 3 A H 3 1 2 7 – 8

63 160/164 275 1250 3 A H 3 1 2 8 – 2

2500 3 A H 3 1 2 8 – 6

3150 3 A H 3 1 2 8 – 7

4000 1) 3 A H 3 1 2 8 – 8

Special versions (available for all 12 kV circuit-breakers)

Ud = 42 kV –Z E13
Isc = 57.8 kA –Z Y03
Ima = 145 kA (for 3AH3 117-.
circuit-breaker)

1) Higher rated normal currents on request

Configuration example 3AH3
3AH3 vacuum circuit-breaker
Rated voltage Ur = 12 kV, 50/60 Hz 117–2
Rated lightning impulse withstand voltage Up = 75 kV 3 AH3 1 1 7 – 2nnnn–nnnn
Rated short-circuit breaking current Isc = 50 kA
Pole-centre distance = 210 mm
Rated normal current Ir = 1250 A

Example for Order No.:

Order codes:

Siemens HG 11.03 · 2010 13

Equipment Selection 3AH3 Vacuum Circuit-Breakers

Selection of basic types, circuit-breakers

15 kV Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Order No.:
50/60 Hz 3 AH 3nnn–nnnnn – nnnn –« nnn

Rated voltage
Rated lightning impulse
withstand voltage
Rated short-duration
power-frequency
withstand voltage
Rated short-circuit
breaking current
at 36 % DC component
Rated short-circuit
making current
(at 50/60 Hz)
Pole-centre distance
Rated normal current
See page 17
See page 18
See page 19
See page 20
See page 21
See page 22
See page 23
See page 23
See page 24

2 Ur Up Ud Isc Ima Ir
kV kV kV kA kA mm
15 95 36 50 125/130 210 A

275 1250 3 A H 3 1 6 7 – 2
63 160/164 275 2500 3 A H 3 1 6 7 – 6
3150 3 A H 3 1 6 7 – 7
Special version (available for all 15 kV circuit-breakers) 4000 1) 3 A H 3 1 7 7 – 8
Ud = 42 kV 1250 3 A H 3 1 7 8 – 2
2500 3 A H 3 1 7 8 – 6
3150 3 A H 3 1 7 8 – 7
4000 1) 3 A H 3 1 7 8 – 8

17.5 kV Ir –Z E13
–Z E13
50/60 Hz A
Ur Up Ud Isc Ima
kV kV kV kA kA mm 1250 3 A H 3 2 1 7 – 2
17.5 95 38 50 125/130 210 2500 3 A H 3 2 1 7 – 6
3150 3 A H 3 2 1 7 – 7
275 4000 1) 3 A H 3 2 2 7 – 8
63 160/164 275 1250 3 A H 3 2 2 8 – 2
2500 3 A H 3 2 2 8 – 6
Special version (available for all 17.5 kV circuit-breakers) 3150 3 A H 3 2 2 8 – 7
Ud = 42 kV 4000 1) 3 A H 3 2 2 8 – 8

1) Higher rated normal currents on request

Configuration example 3AH3
3AH3 vacuum circuit-breaker
Rated voltage Ur = 17.5 kV, 50/60 Hz 228–8
Rated lightning impulse withstand voltage Up = 95 kV 3 AH3 2 2 8 – 8nnnn–nnnn
Rated short-circuit breaking current Isc = 63 kA
Pole-centre distance = 275 mm
Rated normal current Ir = 4000 A

Example for Order No.:

Order codes:

14 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection

Selection of basic types, circuit-breakers

24 kV Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Order No.:
50/60 Hz 3 AH 3nnn–nnnnn – nnnn –« nnn

Rated voltage
Rated lightning impulse
withstand voltage
Rated short-duration
power-frequency
withstand voltage
Rated short-circuit
breaking current
at 36 % DC component
Rated short-circuit
making current
(at 50/60 Hz)
Pole-centre distance
Rated normal current
See page 17
See page 18
See page 19
See page 20
See page 21
See page 22
See page 23
See page 23
See page 24

Ur Up Ud Isc Ima Ir

kV kV kV kA kA mm A

24 125 50 40 100/104 275 2500 3 A H 3 2 6 6 – 6
110 50 50 125/130 275 3150 3 A H 3 2 6 7 – 7
125 50 50 125/130 300 4000 1) 3 A H 3 3 6 7 – 8

36 kV Ir 2

50/60 Hz –Z E14
+E 1 5
Ur Up Ud Isc Ima
–Z E24
kV kV kV kA kA mm A +E 2 5

36 170 70 31.5 80/82 350 1250 3 A H 3 3 0 5 – 2 –Z Y09
+E 2 4
2000 3 A H 3 3 0 5 – 4 +E 2 5

2500 3 A H 3 3 0 5 – 6

3150 3 A H 3 3 0 5 – 7

4000 1) 3 A H 3 3 0 5 – 8

40 100/104 350 2500 3 A H 3 3 0 6 – 6

3150 3 A H 3 3 0 6 – 7

4000 1) 3 A H 3 3 0 6 – 8

Special versions (available for all 36 kV circuit-breakers):

Up = 185 kV (only possible together)
and Ud = 85 kV (only possible together)
(only possible together)
Up = 195 kV
and Ud = 95 kV

Ur = 40.5 kV
Up = 195 kV
Ud = 95 kV

1) Higher rated normal currents on request

Configuration example 3AH3
3AH3 vacuum circuit-breaker
Rated voltage Ur = 36 kV, 50/60 Hz 306–6
Rated lightning impulse withstand voltage Up = 170 kV 3 AH3 3 0 6 – 6nnnn–nnnn
Rated short-circuit breaking current Isc = 40 kA
Pole-centre distance = 350 mm
Rated normal current Ir = 2500 A

Example for Order No.:

Order codes:

Siemens HG 11.03 · 2010 15

Equipment Selection 3AH3 Vacuum Circuit-Breakers

Selection of basic types, high-current and generator circuit-breakers

17.5 kV Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes

50/60 Hz/generator circuit-breaker acc. to IEEE Std C37.013 Order No.: 3 AH 3nnn–nnnnn – nnnn –« nnn

Rated voltage
Rated lightning impulse
withstand voltage
Rated short-duration
power-frequency
withstand voltage
Rated short-circuit
breaking current
at 36 % DC component
Rated short-circuit
making current
(at 50/60 Hz)
Pole-centre distance
Rated normal current
See page 17
See page 18
See page 19
See page 20
See page 21
See page 22
See page 23
See page 23
See page 24

Ur Up Ud Isc Ima Ir
kV kV kV
17.5 110 50 kA kA mm A

2 50 137 275 3150 3 A H 3 8 1 7 – 7
4000 3 A H 3 8 1 7 – 8
G1A
300 5000 3 A H 3 7 1 2 – 4 G1A
6300 1) 3 A H 3 7 1 2 – 5

63 173 275 3150 3 A H 3 8 1 8 – 7
4000 3 A H 3 8 1 8 – 8

300 5000 3 A H 3 7 1 3 – 4
6300 1) 3 A H 3 7 1 3 – 5

72 198 275 3150 3 A H 3 8 1 9 – 7
4000 3 A H 3 8 1 9 – 8

300 5000 3 A H 3 7 1 4 – 4
6300 1) 3 A H 3 7 1 4 – 5

24 kV Ir

50/60 Hz/generator circuit-breaker acc. to IEEE Std C37.013 A

Ur Up Ud Isc Ima 3150 3 A H 3 7 2 2 – 2
4000 3 A H 3 7 2 2 – 3
kV kV kV kA kA mm 5000 3 A H 3 7 2 2 – 4
6300 1) 3 A H 3 7 2 2 – 5
24 125 50 50 137 350 3150 3 A H 3 7 2 3 – 2
4000 3 A H 3 7 2 3 – 3
63 173 350 5000 3 A H 3 7 2 3 – 4
6300 1) 3 A H 3 7 2 3 – 5
72 198 350 3150 3 A H 3 7 2 4 – 2
4000 3 A H 3 7 2 4 – 3
5000 3 A H 3 7 2 4 – 4
6300 1) 3 A H 3 7 2 4 – 5

1) Higher rated normal currents on request

Configuration example 3AH3
3AH3 vacuum circuit-breaker
Rated voltage Ur = 24 kV, 50/60 Hz 724–5
Rated lightning impulse withstand voltage Up = 125 kV 3 AH3 7 2 4 – 5nnnn–nnnn
Rated short-circuit breaking current Isc = 72 kA
Pole-centre distance = 350 mm
Rated normal current Ir = 6300 A

Example for Order No.:

Order codes:

16 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection

Selection of secondary equipment

9th position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Release combination Order No.:
3 AH 3nnn–nnnnn – nnnn –« nnn

Closing solenoid
1st shunt release
2nd shunt release
Undervoltage release
C.t.-operated release
0.5 A
C.t.-operated release
1.0 A
C.t.-operated release
with tripping pulse
Ն 0.1 Ws (10 c)
C.t.-operated release
with tripping pulse
Ն 0.1 Ws (20 c)
See page 18
See page 19
See page 20
See page 21
See page 22
See page 23
See page 23
See page 24

nn M
N
nnn N – Z F 1 51)
T
nnn P
P –Z A46
nnnn Q
R
nnn n
2S
nnn n
S –Z A46
nn n2) U
U –Z A46
nn n V
V –Z A45
nn nn

nn n n

nn n

nn n

nn n

nn n

1) With 3rd shunt release, voltage according to 13th position
2) Version with two c.t.-operated releases 0.5 A

Configuration example 3AH3 A46
3AH3 vacuum circuit-breaker
(Ur = 36 kV, 50/60 Hz, Up = 170 kV, Isc = 40 kA, Ir = 2500 A, 306–6
pole-centre distance = 350 mm)
Closing solenoid, 1st shunt release, undervoltage release and S –Z
c.t.-operated release with a rated normal current of 1 A 3 AH3 3 0 6 – 6 Snnn–nnnn– Z
A46
Example for Order No.:
Order codes:

Siemens HG 11.03 · 2010 17

Equipment Selection 3AH3 Vacuum Circuit-Breakers

Selection of secondary equipment

10th position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Operating voltage of the closing solenoid Order No.:
3 AH 3nnn–nnnnn – nnnn –« nnn

Standard voltages Special voltages See page 19
See page 20
See page 21
See page 22
See page 23
See page 23
See page 24

Mechanical closing at the circuit-breaker

24 V DC B
C
48 V DC D
E
60 V DC F
H
110 V DC J
K
220 V DC Z With order code
Z With order code
100 V AC 50/60 Hz 1) Z With order code
Z With order code
110 V AC 50/60 Hz 1) Z With order code
Z With order code
230 V AC 50/60 Hz 1) Z With order code
Z With order code
30 V DC Z With order code K1A
K1B
32 V DC M K1C
N K1D
2 120 V DC P K1E
Q K1F
125 V DC R K1K
T K1L
127 V DC U K 1M
V
240 V DC Z With order code K2A
Z With order code K2B
120 V AC 50/60 Hz 1) Z With order code K2C
50/60 Hz 1) Z With order code K2D
125 V AC 50/60 Hz 1) Z With order code K2E
Z With order code K2F
240 V AC 50/60 Hz 1) Z With order code K2K
50/60 Hz 1) Z With order code K2L
Manual electrical closing at the circuit-breaker 50/60 Hz 1) Z With order code K 2M

24 V DC

48 V DC

60 V DC

110 V DC

220 V DC

100 V AC 50/60 Hz 1)

110 V AC 50/60 Hz 1)

230 V AC 50/60 Hz 1)

30 V DC

32 V DC

120 V DC

125 V DC

127 V DC

240 V DC

120 V AC

125 V AC

240 V AC

1) The AC frequency 50 or 60 Hz is selected at the 16th position of the
order number together with the language (see page 23)

Configuration example 3AH3 K2B
3AH3 vacuum circuit-breaker
(Ur = 36 kV, 50/60 Hz, Up = 170 kV, Isc = 40 kA, Ir = 2500 A, 306–6S
pole-centre distance = 350 mm)
Manual electrical closing at the circuit-breaker, Z
operating voltage of the closing solenoid 32 V DC 3 AH3 3 0 6 – 6 S Znn–nnnn– Z
A46+K2B
Example for Order No.:
Order codes:

18 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection

Selection of secondary equipment

11th position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Operating voltage of the 1st shunt release Order No.:
3 AH 3nnn–nnnnn – nnnn –« nnn

Standard voltages Special voltages See page 20
See page 21
See page 22
See page 23
See page 23
See page 24

24 V DC 50/60 Hz 1) 1
48 V DC 50/60 Hz 1) 2
60 V DC 50/60 Hz 1) 3
110 V DC 4
220 V DC 5
100 V AC 6
110 V AC 7
230 V AC 8
9 With order code
30 V DC 50/60 Hz 1) 9 With order code L 1A 2
32 V DC 50/60 Hz 1) 9 With order code L1B
120 V DC 50/60 Hz 1) 9 With order code L1C
125 V DC 9 With order code L 1D
127 V DC 9 With order code L1E
240 V DC 9 With order code L1F
120 V AC 9 With order code L1K
125 V AC 9 With order code L1L
240 V AC L 1M

1) The AC frequency 50 or 60 Hz is selected at the 16th position of the
order number together with the language (see page 23)

Configuration example 3AH3
3AH3 vacuum circuit-breaker
(Ur = 36 kV, 50/60 Hz, Up = 170 kV, Isc = 40 kA, Ir = 2500 A, 306–6SZ
pole-centre distance = 350 mm) 2
Operating voltage of the 1st shunt release 48 V DC
3 AH3 3 0 6 – 6 S Z 2n–nnnn– Z
Example for Order No.: A46+K2B
Order codes:

Siemens HG 11.03 · 2010 19

Equipment Selection 3AH3 Vacuum Circuit-Breakers

Selection of secondary equipment

12th position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes

Operating voltage of the 2nd release Order No.: 3 AH 3nnn–nnnnn – nnnn –« nnn

Shunt release, undervoltage release or c.t.-operated release

Standard voltages Special voltages See page 21
See page 22
See page 23
See page 23
See page 24

Without or c.t.-operated release 0
1
24 V DC 2
3
48 V DC 4
5
60 V DC 6
7
110 V DC 8
9 With order code
220 V DC 9 With order code
9 With order code
100 V AC 50/60 Hz 1) 9 With order code
9 With order code
110 V AC 50/60 Hz 1) 9 With order code
9 With order code
230 V AC 50/60 Hz 1) 9 With order code
9 With order code
30 V DC M1 A
M1 B
2 32 V DC M1 C
M1 D
120 V DC M1 E
M1 F
125 V DC M1 K
M1 L
127 V DC M1M

240 V DC

120 V AC 50/60 Hz 1)

125 V AC 50/60 Hz 1)

240 V AC 50/60 Hz 1)

Special versions

To operate the 2nd release as an undervoltage release on an

energy store type AN 1902- (for DC) or AN 1901-2 (for AC),

both make Bender, the operating voltage must be defined –

and whether the energy store will be provided by the customer

or included in the scope of supply.

60 V DC Energy store In the scope 9 With order code M2 D
110 V DC Type of supply 9 With order code M2 E
220 V DC no 9 With order code M2 F
100/110/230 V AC AN 1902- no 9 With order code M2 G
60 V DC AN 1902- no 9 With order code M3 D
110 V DC AN 1902- no 9 With order code M3 E
220 V DC AN 1901-2 yes 9 With order code M3 F
100/110/230 V AC AN 1902- yes 9 With order code M3 G
AN 1902- yes
AN 1902- yes
AN 1901-2

1) The AC frequency 50 or 60 Hz is selected at the 16th position of the
order number together with the language (see page 23)

Configuration example 3AH3 M1 B
3AH3 vacuum circuit-breaker
(Ur = 36 kV, 50/60 Hz, Up = 170 kV, Isc = 40 kA, Ir = 2500 A, 306–6SZ2
pole-centre distance = 350 mm) 9
2nd release as undervoltage release with operating voltage 32 V DC
3 AH3 3 0 6 – 6 S Z 2 9 –nnnn– Z
Example for Order No.: A 4 6 + K 2 B +M1 B
Order codes:

20 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection

Selection of secondary equipment

13th position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes

Operating voltage of the 3rd release Order No.: 3 AH 3nnn–nnnnn – nnnn –« nnn

Shunt release, undervoltage release or c.t.-operated release

Standard voltages Special voltages See page 22
See page 23
See page 23
See page 24

Without or c.t.-operated release 0
1
24 V DC 2
3
48 V DC 4
5
60 V DC 6
7
110 V DC 8
9 With order code
220 V DC 9 With order code
9 With order code
100 V AC 50/60 Hz 1) 9 With order code
9 With order code
110 V AC 50/60 Hz 1) 9 With order code
9 With order code
230 V AC 50/60 Hz 1) 9 With order code
9 With order code
30 V DC N1A
N1B
32 V DC N1C 2
N1D
120 V DC N1 E
N1 F
125 V DC N1K
N1 L
127 V DC N 1M

240 V DC

120 V AC 50/60 Hz 1)

125 V AC 50/60 Hz 1)

240 V AC 50/60 Hz 1)

Special versions

To operate the 3rd release as an undervoltage release on an

energy store type AN 1902- (for DC) or AN 1901-2 (for AC),

both make Bender, the operating voltage must be defined –

and whether the energy store will be provided by the customer

or included in the scope of supply.

60 V DC Energy store In the scope 9 With order code N2D
110 V DC Type of supply 9 With order code N2 E
220 V DC no 9 With order code N2 F
100/110/230 V AC AN 1902- no 9 With order code N2G
60 V DC AN 1902- no 9 With order code N3D
110 V DC AN 1902- no 9 With order code N3 E
220 V DC AN 1901-2 yes 9 With order code N3 F
100/110/230 V AC AN 1902- yes 9 With order code N3G
AN 1902- yes
AN 1902- yes
AN 1901-2

1) The AC frequency 50 or 60 Hz is selected at the 16th position of the
order number together with the language (see page 23)

Configuration example 3AH3
3AH3 vacuum circuit-breaker
(Ur = 36 kV, 50/60 Hz, Up = 170 kV, Isc = 40 kA, Ir = 2500 A, 306–6SZ29–
pole-centre distance = 350 mm) 0
3rd release as c.t.-operated release
3 AH3 3 0 6 – 6 S Z 2 9 – 0nnn– Z
Example for Order No.: A 4 6 + K 2 B +M1 B
Order codes:

Siemens HG 11.03 · 2010 21

Equipment Selection 3AH3 Vacuum Circuit-Breakers

Selection of secondary equipment

14th position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Operating voltage of the operating mechanism Order No.:
3 AH 3nnn–nnnnn – nnnn –« nnn

Standard voltages Special voltages See page 23
See page 23
See page 24

Manual operating mechanism (hand crank included in the scope of supply) A
B
24 V DC C
D
48 V DC E
F
60 V DC H
J
110 V DC K
Z With order code
220 V DC Z With order code
Z With order code
100 V AC 50/60 Hz 1) Z With order code
Z With order code
110 V AC 50/60 Hz 1) Z With order code
Z With order code
230 V AC 50/60 Hz 1) Z With order code
Z With order code
30 V DC P1A
P1B
32 V DC P1C
P1D
2 120 V DC P1E
P1F
125 V DC P1K
P1L
127 V DC P 1M

240 V DC

120 V AC 50/60 Hz 1)

125 V AC 50/60 Hz 1)

240 V AC 50/60 Hz 1)

1) The AC frequency 50 or 60 Hz is selected at the 16th position of the
order number together with the language (see page 23)

Configuration example 3AH3
3AH3 vacuum circuit-breaker
(Ur = 36 kV, 50/60 Hz, Up = 170 kV, Isc = 40 kA, Ir = 2500 A, 306–6SZ29–0
pole-centre distance = 350 mm) K
Operating voltage of the operating mechanism 230 V AC, 50 Hz

Example for Order No.: 3 A H 3 3 0 6 – 6 S Z 2 9 – 0 K n n – Z
Order codes: A 4 6 + K 2 B + M 1 B

22 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection

Selection of secondary equipment

15th position Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes

Auxiliary switch, secondary connection, interlocking Order No.: 3 A H 3 n n n – n n n n n – n n n n – « n n n

Mechanical
interlocking
Auxiliary switch
6 NO + 6 NC
Auxiliary switch
12 NO + 12 NC
64-pole plug 1)
24-pole plug 2)
24-pole
terminal strip 2)
See page 24

nn A
E
nn G
C
nn M
B
nn F
H
nn D
N
nn n

nn n

nn n

n nn

nn n 2

Special version

Auxiliary switch 12 NO + 12 NC and 24-pole plug (E or F) –Z A26

Special versions gold-plated contacts and pins

Auxiliary switch 6 NO + 6 NC and 24-pole terminal strip (G or H) –Z A17
–Z A18
Auxiliary switch 12 NO + 12 NC and 24-pole terminal strip (M or N) –Z A20
–Z A21
Auxiliary switch 6 NO + 6 NC and 64-pole plug (A or B)

Auxiliary switch 12 NO + 12 NC and 64-pole plug (C or D)

1) Depending on the equipment, some connections of the 64-pole plug
connector remain free. These can be connected to free auxiliary switch
contacts by the customer. Prefabricated wires are available as accessories.

2) Auxiliary switch contacts are not wired to the plug/terminal strip and must
therefore be connected directly.

16th position
AC frequency of operating voltages
Languages of operating instructions and rating plate

Language selection Frequency selection

German
English
French
Spanish
DC
50 Hz
50 Hz and DC
60 Hz
60 Hz and DC

n nnn 0
n nn 1
2
n nnn 3
n nn 4
5
n nnn 6
n nn 7

nnnn –Z Y12
n nn
Other languages on request

Special versions

Additional information on the rating plate (only after consultation
with the order processing department at the Switchgear Factory Berlin).
Information in clear text.

Configuration example 3AH3 A20
3AH3 vacuum circuit-breaker
(Ur = 36 kV, 50/60 Hz, Up = 170 kV, Isc = 40 kA, Ir = 2500 A, 306–6SZ29–0K
pole-centre distance = 350 mm) B
Auxiliary switch 6 NO + 6 NC, 64-pole plug and with mechanical interlocking –Z
Auxiliary switch contacts and pins of the plug connector gold-plated 2
Frequency 50 Hz or DC, operating instructions and rating plate in English

Example for Order No.: 3 A H 3 3 0 6 – 6 S Z 2 9 – 0 K B 2 – Z
Order codes: A 4 6 + K 2 B + M 1 B + A 2 0

Siemens HG 11.03 · 2010 23

Equipment Selection 3AH3 Vacuum Circuit-Breakers

Selection of additional equipment

Additional equipment Position: 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16 Order codes
Order No.:
3 AH 3nnn–nnnnn – nnnn –« nnn

Options

Wiring cables, halogen-free and flame-retardant –Z A10
–Z A30
Condensation protection, heating for 230 V AC, 50 W –Z A31
–Z A70
Silicone-free design –Z B00

2 Vacuum circuit-breaker for horizontal installation –Z D10
–Z F20
Additional rating plate, loose delivery
–Z F28
Primary conductor bars silver-plated for external connections
and internal interconnection on both sides –Z F30
(standard for 4000 A circuit-breakers and type 3AH381)
–Z Y04
Routine test certificate enclosed
–Z Y99
Rated operating sequence O - 0.3 s - CO - 15 s - CO
(only possible up to 31.5 kA)

Hand crank (also for motor operating mechanism)
for manual charging of the closing spring

Circuit-breaker can also be used for 4500 A (applicable to circuit-breaker
types 3AH3077-8, 3AH3078-8, 3AH3127-8, 3AH3128-8, 3AH3177-8,
3AH3178-8, 3AH3227-8, 3AH3228-8, 3AH3818-8, 3AH3819-8)

Further, non-listed special versions (only after consultation with the
order processing department at the Switchgear Factory Berlin).
Information additionally in clear text.

Configuration example 3AH3 A46
3AH3 vacuum circuit-breaker K2B
Rated voltage Ur = 36 kV (50/60 Hz) 306–6 M1 B
Rated lightning impulse withstand voltage Up = 170 kV
Rated short-circuit breaking current Isc = 40 kA S –Z A20
Pole-centre distance = 350 mm F20
Rated normal current Ir = 2500 A Z
Closing solenoid, 1st shunt release, undervoltage release 2
and c.t.-operated release with a rated normal current of 1 A 9–
Manual electrical closing at the circuit-breaker, 0
operating voltage of the closing solenoid 32 V DC K
Operating voltage of the 1st release 48 V DC B
2nd release as undervoltage release with operating voltage 32 V DC –Z
3rd release as c.t.-operated release 2
Operating voltage of the operating mechanism 230 V AC, 50 Hz –Z
Auxiliary switch 6 NO + 6 NC, 64-pole plug and with mechanical interlocking
Auxiliary switch contacts and pins of the plug connector gold-plated
Frequency 50 Hz or DC, operating instructions and rating plate in English
Routine test certificate enclosed

Example for Order No.: 3 A H 3 3 0 6 – 6 S Z 2 9 – 0 K B 2 – Z
Order codes: A 4 6 + K 2 B + M 1 B + A 2 0 + F 2 0

24 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Equipment Selection

Accessories and spare parts

On request, we will be pleased to send you an overview Accessories for the plug connector 2
of accessories and spare parts, as well as the spare pole Included in the scope of supply of the basic equipment for
assemblies available. Please consider the following infor- 3AH3 vacuum circuit-breakers: HG11-2588c_en eps
mation for your purchase order. For 24-pole plug connector
– Lower part of plug
Remark for orders – Crimp sockets according to number of contacts
– Upper part of plug with screwed contacts
The order numbers in the spare part overview are applicable
to vacuum circuit-breakers of current manufacture. When (no crimp sockets required)
mounting parts or spare parts are being ordered for an For 64-pole plug connector
existing vacuum circuit-breaker, always quote the type – Lower part of plug
designation, serial number and the year of manufacture of – Upper part of plug
the circuit-breaker to be sure to get the correct delivery. – Crimp sockets according to number of contacts

Retrofitting Data on the rating plate

When releases/solenoids are retrofitted, the order numbers Note:
of the mounting parts must also be specified. For other addi- For any query regarding spare parts,
tional equipment, the required mounting parts are included subsequent deliveries, etc. the following
in the delivery. three details are necessary:
– Type designation
Spare pole assemblies – Serial No.
– Year of manufacture
As spare parts, the vacuum interrupters are always supplied
as a complete pole including post insulator.

To select the correct spare pole assemblies, please specify
the type designation, serial number and year of manufacture
of the circuit-breaker. All data is given on the rating plate.

Vacuum pole assemblies and other spare parts must only
be replaced by instructed personnel.

Designation Remarks Order No.
Hand crank
Wire bundle With 10 wires for connection of auxiliary switch to 3AX15 30-2B

Accessories for plug connector – 64-pole plug connector 3AX11 34-2D
3AX11 34-2B
– 24-pole plug connector 3AX11 34-2C

– 24-pole terminal strip 3AX11 34-3A
3AX11 34-4B
(for wire cross-section 1.5 mm2) 3AX11 34-4C
3AX11 34-4D
Crimp pins for lower part of plug 24-pole 3AX11 34-4G

64-pole

Crimp sockets for upper part of plug 64-pole

Crimping pliers

Disassembly tool

Siemens HG 11.03 · 2010 25

3AH3 Vacuum Circuit-Breakers R-HG11-205.tif
26 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data
Vacuum interrupter
Contents

R-HG11-196.tif Contents Page

Technical Data 27 3

Electrical data, dimensions and weights: 28
Voltage level 7.2 kV 28
Voltage level 12 kV 30
Voltage level 15 kV 32
Voltage level 17.5 kV 34
Voltage level 24 kV 36
Voltage level 36 kV
38
Electrical data, dimensions and weights of 40
high-current and generator circuit-breakers 42
according to IEEE C37.013: 44
Voltage level 17.5 kV 44
Voltage level 24 kV 44

Circuit diagrams
Operating times
Short-circuit protection of motors
Consumption data of releases

R-HG11-197.tif

Post insulator and upper interrupter support

Siemens HG 11.03 · 2010 27

Technical Data 3AH3 Vacuum Circuit-Breakers

Electrical data, dimensions and weights

7.2 kV Order No.
Rated normal current
50/60 Hz Pole-centre distance
Rated operating sequence:
O - 3 min - CO - 3 min - CO
O - 0.3 s - CO - 3 min - CO
O - 0.3 s - CO - 15 s - CO
Rated duration of short-circuit
Rated short-circuit breaking current
DC component in %
of the rated short-circuit breaking current
Asymmetrical breaking current
Rated short-circuit making current
(at 50/60 Hz)
Rated lightning impulse withstand voltage
Rated short-duration power-frequency
withstand voltage
Voltage drop ΔU between connections
(according to IEC 62271-1 at DC 100 A)
Minimum creepage distance,
interrupter
Minimum creepage distance,
phase-to-earth
Minimum clearance,
phase-to-phase
Minimum clearance,
phase-to-earth
Weights
Detailed dimension drawing
(can be ordered)
Operating cycle diagram no. (see page 29)
Catalog dimension drawing no. (see page 29)

Ir tk Isc Ima Up Ud
A mm
3AH3 057-2 … 1250 210 s kA % kA kA kV kV mV mm mm mm mm kg
3AH3 057-6 … 2500 210
3AH3 057-7 … 3150 210 n 3 50 36 56.1 125/ 60 20 1.8 160 230 80 130 180 S_325 00415 1 1
3AH3 077-8 … 4000 275 n 130
3AH3 078-2 … 1250 275 n
3AH3 078-6 … 2500 275 n 3 50 36 56.1 125/ 60 20 1.8 160 230 80 130 180 S_325 00417 1 1
3AH3 078-7 … 3150 275 n 130
3AH3 078-8 … 4000 275 n
n 3 50 36 56.1 125/ 60 20 1.8 160 230 80 130 180 S_325 00001 1 1
n 130

n 3 50 36 56.1 125/ 60 20 1.4 160 170 71 130 308 S_325 00004 1 3
n 130
n
n 3 63 36 70.7 160/ 60 20 1.8 160 170 71 130 196 S_325 00003 2 2
n 164
n
n 3 63 36 70.7 160/ 60 20 1.8 160 170 71 130 196 S_325 00003 2 2
n 164

3 63 36 70.7 160/ 60 20 1.8 160 170 71 130 196 S_325 00003 2 2
164

3 63 36 70.7 160/ 60 20 1.4 160 170 71 130 308 S_325 00004 2 3
164

3 12 kV Ir tk Isc Ima Up Ud
A mm
50/60 Hz s kA % kA kA kV kV mV mm mm mm mm kg

3AH3 117-2 … 1250 210 3 50 36 56.1 125/ 75 28 1.8 160 230 80 130 180 S_325 00415 1 1
130

3AH3 117-6 … 2500 210 3 50 36 56.1 125/ 75 28 1.8 160 230 80 130 180 S_325 00417 1 1
130

3AH3 117-7 … 3150 210 3 50 36 56.1 125/ 75 28 1.8 160 230 80 130 180 S_325 00001 1 1
130

3AH3 127-8 … 4000 275 3 50 36 56.1 125/ 75 28 1.4 160 170 71 130 308 S_325 00004 1 3
130

3AH3 128-2 … 1250 275 3 63 36 70.7 160/ 75 28 1.8 160 170 71 130 196 S_325 00003 2 2
164

3AH3 128-6 … 2500 275 3 63 36 70.7 160/ 75 28 1.8 160 170 71 130 196 S_325 00003 2 2
164

3AH3 128-7 … 3150 275 3 63 36 70.7 160/ 75 28 1.8 160 170 71 130 196 S_325 00003 2 2
164

3AH3 128-8 … 4000 275 3 63 36 70.7 160/ 75 28 1.4 160 170 71 130 308 S_325 00004 2 3
164

n Standard information on the rating plate
Rated operating sequence possible up to Isc = 31.5 kA

28 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data

Electrical data, dimensions and weights

Operating cycle diagram for 7.2 kV and 12 kV

Operating cycles20 000 The permissible number of electrical operating cycles is shown as a function
10 000 of the breaking current (r.m.s. value). All vacuum circuit-breakers fulfil the
HG11-2564b_en eps5 000 endurance classes E2, M2 and C2 according to IEC 62271-100. The
curve shape beyond the parameters defined in IEC 62271-100 is based on
2 000 2 average experience data. The number of operating cycles that can actually
1 000 be reached can be different depending on the respective application.

500 2
1
200 5 10 20 kA 50 63 100
100 Breaking current (r.m.s. value)
75
50

20
10

1

Dimension drawings for 7.2 kV and 12 kV 591 680 3
211 275 275
561 550
210 210

211
70 494 105 668
668
HG11-2560 eps
HG11-2561 eps
105 494 105
571 610 601 776

Dimension drawing 1 750 Dimension drawing 2
275 275
694
494 105
211

170 733

694 HG11-2562 eps776

Dimension drawing 3

Siemens HG 11.03 · 2010 29

Technical Data 3AH3 Vacuum Circuit-Breakers

Electrical data, dimensions and weights

15 kV Order No.
Rated normal current
50/60 Hz Pole-centre distance
Rated operating sequence:
O - 3 min - CO - 3 min - CO
O - 0.3 s - CO - 3 min - CO
O - 0.3 s - CO - 15 s - CO
Rated duration of short-circuit
Rated short-circuit breaking current
DC component in %
of the rated short-circuit breaking current
Asymmetrical breaking current
Rated short-circuit making current
(at 50/60 Hz)
Rated lightning impulse withstand voltage
Rated short-duration power-frequency
withstand voltage
Voltage drop ΔU between connections
(according to IEC 62271-1 at DC 100 A)
Minimum creepage distance,
interrupter
Minimum creepage distance,
phase-to-earth
Minimum clearance,
phase-to-phase
Minimum clearance,
phase-to-earth
Weights
Detailed dimension drawing
(can be ordered)
Operating cycle diagram no. (see page 31)
Catalog dimension drawing no. (see page 31)

Ir tk Isc Ima Up Ud
A mm
3AH3 167-2 … 1250 210 s kA % kA kA kV kV mV mm mm mm mm kg
3AH3 167-6 … 2500 210
3AH3 167-7 … 3150 210 n 3 50 36 56.1 125/ 95 36 1.8 160 230 110 130 184 S_325 00416 3 4
3AH3 177-8 … 4000 275 n 130
3AH3 178-2 … 1250 275 n
3AH3 178-6 … 2500 275 n 3 50 36 56.1 125/ 95 36 1.8 160 230 110 130 184 S_325 00418 3 4
3AH3 178-7 … 3150 275 n 130
3AH3 178-8 … 4000 275 n
n 3 50 36 56.1 125/ 95 36 1.8 160 230 110 130 184 S_325 00002 3 4
n 130

3 50 36 56.1 125/ 95 36 1.4 160 170 135 130 310 S_325 00006 3 6
130

3 63 36 70.7 160/ 95 36 1.8 160 170 71 130 196 S_325 00005 4 5
164

3 63 36 70.7 160/ 95 36 1.8 160 170 71 130 196 S_325 00005 4 5
164

3 63 36 70.7 160/ 95 36 1.8 160 170 71 130 196 S_325 00005 4 5
164

3 63 36 70.7 160/ 95 36 1.4 160 170 71 130 308 S_325 00006 4 6
164

3 n Standard information on the rating plate
Rated operating sequence possible up to Isc = 31.5 kA

30 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data

Electrical data, dimensions and weights

Operating cycle diagram for 15 kV

Operating cycles20 000 The permissible number of electrical operating cycles is shown as a function
10 000 of the breaking current (r.m.s. value). All vacuum circuit-breakers fulfil the
HG11-2565b_en eps5 000 endurance classes E2, M2 and C2 according to IEC 62271-100. The
curve shape beyond the parameters defined in IEC 62271-100 is based on
2 000 2 average experience data. The number of operating cycles that can actually
1 000 be reached can be different depending on the respective application.

500 3
4
200
100 5 10 20 kA 50 63 100
75 Breaking current (r.m.s. value)
50

20
10

1

Dimension drawings for 15 kV 591 680 3
211 275 275
561 550
210 210

211
70 494 105 668
668
HG11-2560 eps
HG11-2561 eps
105 494 105
571 610 601 776

Dimension drawing 4 750 Dimension drawing 5
275 275
694
494 105
211

170 733

694 HG11-2562 eps776

Dimension drawing 6

Siemens HG 11.03 · 2010 31

Technical Data 3AH3 Vacuum Circuit-Breakers

Electrical data, dimensions and weights

Order No.17.5 kV
Rated normal current
Pole-centre distance50/60 Hz
Rated operating sequence:
O - 3 min - CO - 3 min - CO
O - 0.3 s - CO - 3 min - CO
O - 0.3 s - CO - 15 s - CO
Rated duration of short-circuit
Rated short-circuit breaking current
DC component in %
of the rated short-circuit breaking current
Asymmetrical breaking current
Rated short-circuit making current
(at 50/60 Hz)
Rated lightning impulse withstand voltage
Rated short-duration power-frequency
withstand voltage
Voltage drop ΔU between connections
(according to IEC 62271-1 at DC 100 A)
Minimum creepage distance,
interrupter
Minimum creepage distance,
phase-to-earth
Minimum clearance,
phase-to-phase
Minimum clearance,
phase-to-earth
Weights
Detailed dimension drawing
(can be ordered)
Operating cycle diagram no. (see page 33)
Catalog dimension drawing no. (see page 33)

Ir tk Isc Ima Up Ud
A mm
3AH3 217-2 … 1250 210 s kA % kA kA kV kV mV mm mm mm mm kg
3AH3 217-6 … 2500 210
3AH3 217-7 … 3150 210 n 3 50 36 56.1 125/ 95 38 1.8 160 230 110 130 184 S_325 00416 5 4
3AH3 227-8 … 4000 275 n 130
3AH3 228-2 … 1250 275 n
3AH3 228-6 … 2500 275 n 3 50 36 56.1 125/ 95 38 1.8 160 230 110 130 184 S_325 00418 5 4
3AH3 228-7 … 3150 275 n 130
3AH3 228-8 … 4000 275 n
n 3 50 36 56.1 125/ 95 38 1.8 160 230 110 130 184 S_325 00002 5 4
n 130

3 50 36 56.1 125/ 95 38 1.4 160 170 135 130 310 S_325 00006 5 6
130

3 63 36 70.7 160/ 95 38 1.8 160 170 145 130 198 S_325 00005 6 5
163.8

3 63 36 70.7 160/ 95 38 1.8 160 170 145 130 198 S_325 00005 6 5
163.8

3 63 36 70.7 160/ 95 38 1.8 160 170 145 130 198 S_325 00005 6 5
163.8

3 63 36 70.7 160/ 95 38 1.4 160 170 135 130 310 S_325 00006 6 6
163.8

3 n Standard information on the rating plate
Rated operating sequence possible up to Isc = 31.5 kA

32 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data

Electrical data, dimensions and weights

Operating cycle diagram for 17.5 kV

Operating cycles20 000 The permissible number of electrical operating cycles is shown as a function
10 000 of the breaking current (r.m.s. value). All vacuum circuit-breakers fulfil the
HG11-2566b_en eps5 000 endurance classes E2, M2 and C2 according to IEC 62271-100. The
curve shape beyond the parameters defined in IEC 62271-100 is based on
2 000 2 average experience data. The number of operating cycles that can actually
1 000 be reached can be different depending on the respective application.

500 6
5
200 5 10 20 kA 50 63 100
Breaking current (r.m.s. value)
100
50
30

20
10

1

Dimension drawings for 17.5 kV 591 680 3
211 275 275
561 550
210 210

211
70 494 105 668
668
HG11-2560 eps
HG11-2561 eps
105 494 105
571 610 601 776

Dimension drawing 4 750 Dimension drawing 5
275 275
694
494 105
211

170 733

694 HG11-2562 eps776

Dimension drawing 6

Siemens HG 11.03 · 2010 33

3

34 Siemens HG 11.03 · 2010 Ir 24 kV Technical Data
A mm
3AH3 266-6 … 2500 275 50/60 Hz Electrical data, dimensions and weights
3AH3 267-7 … 2500 275 Order No.
3AH3 367-8 … 4000 300
Rated normal current
n Standard information on the rating plate n
Rated operating sequence possible up to Isc = 31.5 kA n Pole-centre distance
n
Rated operating sequence:
3 3 3 s kA % kA kA kV kV mV mm mm mm mm kg tk Isc O - 3 min - CO - 3 min - CO
O - 0.3 s - CO - 3 min - CO
50 50 40 O - 0.3 s - CO - 15 s - CO

36 36 36 Rated duration of short-circuit

56.1 56.1 44.9 Rated short-circuit breaking current
DC component in %
125/ 125/ 100/ Ima Up Ud of the rated short-circuit breaking current
130 130 104 Asymmetrical breaking current

125 50 110 50 125 50 Rated short-circuit making current
(at 50/60 Hz)
1.5 161 207 440 197 1.5 161 170 228 180 2.0 360 226 245 173
Rated lightning impulse withstand voltage
350 198 168 Rated short-duration power-frequency 3AH3 Vacuum Circuit-Breakers
withstand voltage
S_325 00596 S_325 00034 S_325 00007 Voltage drop ΔU between connections
(according to IEC 62271-1 at DC 100 A)
9 9 7 Minimum creepage distance,
interrupter
9 8 7 Minimum creepage distance,
phase-to-earth
Minimum clearance,
phase-to-phase
Minimum clearance,
phase-to-earth

Weights

Detailed dimension drawing
(can be ordered)

Operating cycle diagram no. (see page 35)

Catalog dimension drawing no. (see page 35)

3AH3 Vacuum Circuit-Breakers Technical Data

Electrical data, dimensions and weights

Operating cycle diagram for 24 kV

Operating cycles20 000 The permissible number of electrical operating cycles is shown as a function
10 000 of the breaking current (r.m.s. value). All vacuum circuit-breakers fulfil the
HG11-2567d_en eps5 000 endurance classes E2, M2 and C2 according to IEC 62271-100. The
curve shape beyond the parameters defined in IEC 62271-100 is based on
2 000 2 average experience data. The number of operating cycles that can actually
1 000 be reached can be different depending on the respective application.

500 7
89
200 5 10 20 31.5 40 50 kA 100
100 Breaking current (r.m.s. value)
50

20
10

1

Dimension drawings for 24 kV

773 680 644 680
635 275 275 589,5
275 275
80

494 105 778 3
1030

HG11-2568 eps

max.70 494 105
668
900
211
210

194 599,5 776 HG11-2755 eps
704
645
Dimension drawing 8
Dimension drawing 7
750
1051 300 300
736,5
80
211

max.60 494 105 824
733

1180

HG11-2756 eps

Dimension drawing 9

Siemens HG 11.03 · 2010 35

Technical Data 3AH3 Vacuum Circuit-Breakers

Electrical data, dimensions and weights

36 kV Order No.
Rated normal current
50/60 Hz Pole-centre distance
Rated operating sequence:
O - 3 min - CO - 3 min - CO
O - 0.3 s - CO - 3 min - CO
O - 0.3 s - CO - 15 s - CO
Rated duration of short-circuit
Rated short-circuit breaking current
DC component in %
of the rated short-circuit breaking current
Asymmetrical breaking current
Rated short-circuit making current
(at 50/60 Hz)
Rated lightning impulse withstand voltage
Rated short-duration power-frequency
withstand voltage
Voltage drop ΔU between connections
(according to IEC 62271-1 at DC 100 A)
Minimum creepage distance,
interrupter
Minimum creepage distance,
phase-to-earth
Minimum clearance,
phase-to-phase
Minimum clearance,
phase-to-earth
Weights
Detailed dimension drawing
(can be ordered)
Operating cycle diagram no. (see page 37)
Catalog dimension drawing no. (see page 37)

Ir tk Isc Ima Up Ud
A mm
3AH3 305-2 … 1250 350 s kA % kA kA kV kV mV mm mm mm mm kg
3AH3 305-4 … 2000 350
3AH3 305-6 … 2500 350 n 3 31.5 36 35.4 80/ 170 70 2.3 360 330 314 260 170 S_325 00008 8 10
3AH3 305-7 … 3150 350 n 82 S_325 00008 8 10
3AH3 305-8… 4000 350 n S_325 00009 8 11
3AH3 306-6 … 2500 350 n 3 31.5 36 35.4 80/ 170 70 2.3 360 330 314 260 175 S_325 00057 8 12
3AH3 306-7… 3150 350 n 82 S_325 00057 8 12
3AH3 306-8… 4000 350 n S_325 00009 7 11
n 3 31.5 36 35.4 80/ 170 70 2.3 360 330 314 260 175 S_325 00058 7 12
n 82 S_325 00058 7 12

3 31.5 36 35.4 80/ 170 70 1.9 366 430 309 270 350
82

3 31.5 36 35.4 80/ 170 70 1.9 366 430 309 270 350
82

3 40 36 44.9 100/ 170 70 2.0 360 330 314 260 175
104

3 40 36 44.9 100/ 170 70 1.9 366 430 309 270 350
104

3 40 36 44.9 100/ 170 70 1.9 366 430 309 270 350
104

3 n Standard information on the rating plate
Possible with order number suffix Z and order code F27
Possible with order number suffix Z and order code F28
Rated operating sequence possible up to Isc = 31.5 kA

36 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data

Electrical data, dimensions and weights

Operating cycle diagram for 36 kV

Operating cycles20 000 The permissible number of electrical operating cycles is shown as a function
10 000 of the breaking current (r.m.s. value). All vacuum circuit-breakers fulfil the
HG11-2567d_en eps5 000 endurance classes E2, M2 and C2 according to IEC 62271-100. The
curve shape beyond the parameters defined in IEC 62271-100 is based on
2 000 2 average experience data. The number of operating cycles that can actually
1 000 be reached can be different depending on the respective application.

500 7
89
200 5 10 20 31.5 40 50 kA 100
100 Breaking current (r.m.s. value)
50

20
10

1

Dimension drawings for 36 kV

823 820 823 820
737 350 350 737 350 350

494 105 211 211 494 105 3

734 791
1000 1000

234 HG11-2569 eps HG11-2570 eps

234
737 853 737 853

Dimension drawing 10 Dimension drawing 11

1012 268,5 870
679 350 350

ca.105

211

494 986,5
1126,5

max.70

920 HG11-2781 eps

Dimension drawing 12

Siemens HG 11.03 · 2010 37

Technical Data 3AH3 Vacuum Circuit-Breakers

Electrical data, dimensions and weights
of high-current and generator circuit-breakers

17.5 kV

50/60 Hz
High-current and generator circuit-breakers
according to IEEE C37.013

Order No.
Rated normal current
Pole-centre distance
Rated operating sequence:
O - 3 min - CO - 3 min - CO
O - 30 min - CO
Rated duration of short-circuit
Rated short-circuit breaking current
DC component in %
of the rated short-circuit breaking current
Asymmetrical breaking current
Rated short-circuit making current
(at 50/60 Hz)
Rated lightning impulse withstand voltage
Rated short-duration power-frequency
withstand voltage
Voltage drop ΔU between connections
(according to IEC 62271-1 at DC 100 A)
Minimum creepage distance,
interrupter
Minimum creepage distance,
phase-to-earth
Minimum clearance,
phase-to-phase
Minimum clearance,
phase-to-earth
Weights
Detailed dimension drawing
(can be ordered)
Catalog dimension drawing no. (see page 39)
Ir tk Isc Ima Up Ud
A mm
3AH3 712-4 … 5000 300 s kA % kA kA kV kV mV mm mm mm mm kg
3AH3 712-5 … 6300 300
3AH3 713-4 … 5000 300 n 3 50 75 73 137 110 50 1.4 160 230 230 230 470 S_325 00587 14
3AH3 713-5 … 6300 300
3AH3 714-4 … 5000 300 n 3 50 75 73 137 110 50 1.4 160 230 230 230 500 S_325 00587 14
3AH3 714-5 … 6300 300
3AH3 817-7 … 3150 275 n 3 63 65 86 173 110 50 1.4 160 230 230 230 470 S_325 00588 15
3AH3 817-8 … 4000 275
3AH3 818-7 … 3150 275 n 3 63 65 86 173 110 50 1.4 160 230 230 230 500 S_325 00588 15
3AH3 818-8 … 4000 275
3AH3 819-7 … 3150 275 n 3 72 65 96 198 110 50 1.4 160 230 230 230 470 S_325 00589 15
3AH3 819-8 … 4000 275
n 3 72 65 96 198 110 50 1.4 160 230 230 230 500 S_325 00589 15

n 3 50 75 73 137 110 50 1.4 160 170 145 130 230 S_325 00592 13

n 3 50 75 73 137 110 50 1.4 160 170 135 130 320 S_325 00593 14

3 n 3 63 65 86 173 110 50 1.4 160 170 145 130 230 S_325 00019 16

n 3 63 65 86 173 110 50 1.4 160 170 135 130 320 S_325 00030 14

n 3 72 65 96 198 110 50 1.4 160 170 145 130 250 S_325 00019 16

n 3 72 65 96 198 110 50 1.4 160 170 135 130 320 S_325 00030 14

n Standard information on the rating plate
Possible with order number suffix Z and order code F27

38 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data

Electrical data, dimensions and weights
of high-current and generator circuit-breakers

Number of operating cycles

The maximum permissible number of mechanical
operating cycles is 10,000. Short-circuit breaking operations
have been tested and proved under various conditions
according to IEEE C37.013. As regards the electrical
endurance, values ranging beyond this depend on the
specific case of application.

Dimension drawings for high-current and generator circuit-breakers 17.5 kV

433 275 275 600 275 275
269,5 109 80 271,5 211 80

211 211

max.70 494 104 ca.90
668
HG11-2571 eps 733
900 1000
max.70 494
HG11-2572 eps

119 Dimension drawing 14 3

Dimension drawing 13 300 300

840
356 410

211

max. 60 494 104 915
1180

HG11-2573 eps

Dimension drawing 15 275 275
80
433
269,5 109
211

59 494 104 668
900

HG11-2574 eps

119

Dimension drawing 16

Siemens HG 11.03 · 2010 39

Technical Data 3AH3 Vacuum Circuit-Breakers

Electrical data, dimensions and weights
of high-current and generator circuit-breakers

24 kV

50/60 Hz
High-current and generator circuit-breakers
according to IEEE C37.013

Order No.
Rated normal current
Pole-centre distance
Rated operating sequence:
O - 3 min - CO - 3 min - CO
O - 30 min - CO
Rated duration of short-circuit
Rated short-circuit breaking current
DC component in %
of the rated short-circuit breaking current
Asymmetrical breaking current
Rated short-circuit making current
(at 50/60 Hz)
Rated lightning impulse withstand voltage
Rated short-duration power-frequency
withstand voltage
Voltage drop ΔU between connections
(according to IEC 62271-1 at DC 100 A)
Minimum creepage distance,
interrupter
Minimum creepage distance,
phase-to-earth
Minimum clearance,
phase-to-phase
Minimum clearance,
phase-to-earth
Weights
Detailed dimension drawing
(can be ordered)
Catalog dimension drawing no. (see page 41)
Ir tk Isc Ima Up Ud
A mm
3AH3 722-2 … 3150 300 s kA % kA kA kV kV mV mm mm mm mm kg
3AH3 722-3 … 4000 300
3AH3 722-4 … 5000 300 n 3 50 75 73 137 125 50 1.6 160 220 538 170 350 S_325 00913 9
3AH3 722-5 … 6300 300
3AH3 723-2 … 3150 300 n 3 50 75 73 137 125 50 1.6 160 220 538 170 350 S_325 00597 9
3AH3 723-3 … 4000 300
3AH3 723-4 … 5000 300 n 3 50 75 73 137 125 50 1.6 160 207 293 170 470 S_325 00914 15
3AH3 723-5 … 6300 300
3AH3 724-2 … 3150 300 n 3 50 75 73 137 125 50 1.6 160 207 293 170 500 S_325 00910 15
3AH3 724-3 … 4000 300
3AH3 724-4 … 5000 300 n 3 63 65 86 173 125 50 1.6 160 220 538 170 350 S_325 00915 9
3AH3 724-5 … 6300 300
n 3 63 65 86 173 125 50 1.6 160 220 538 170 350 S_325 00909 9

n 3 63 65 86 173 125 50 1.6 160 207 293 170 470 S_325 00916 15

n 3 63 65 86 173 125 50 1.6 160 207 293 170 500 S_325 00911 15

3 n 3 72 65 96 198 125 50 1.6 160 220 538 170 350 S_325 00917 9

n 3 72 65 96 198 125 50 1.6 160 220 538 170 350 S_325 00918 9

n 3 72 65 96 198 125 50 1.6 160 207 293 170 470 S_325 00919 15

n 3 72 65 96 198 125 50 1.6 160 207 293 170 500 S_325 00920 15

n Standard information on the rating plate
Possible with order number suffix Z and order code F27

40 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data

Electrical data, dimensions and weights
of high-current and generator circuit-breakers

Number of operating cycles
The maximum permissible number of mechanical
operating cycles is 10,000. Short-circuit breaking operations
have been tested and proved under various conditions
according to IEEE C37.013. As regards the electrical
endurance, values ranging beyond this depend on the
specific case of application.

Dimension drawings for high-current and generator circuit-breakers 24 kV

1051 750
736,5 300 300

211 80

max.60 494 105 733
1180

HG11-2756 eps
824
Dimension drawing 9 300 300 3

840
356 410

211

max. 60 494 104 915
1180

HG11-2573 eps

Dimension drawing 15

Siemens HG 11.03 · 2010 41

Technical Data 3AH3 Vacuum Circuit-Breakers

Circuit diagrams

Circuit diagrams
The circuit diagrams shown here are examples from the manifold possibilities of circuit-breaker wiring.

-S10 -S11 -Y9 -X0

HE

-S21 -S22 -S3 -S41 -S42 HG11-2575_en eps 11 13 21 23 31 33 41 43 51 53 61 63 HG11-2579a eps
-M1 M P
-S1
-S7 -S6
“OPEN” release 12 14 22 24 32 34 42 44 52 54 62 64

HA -X0
-Y1 Contacts available for customer with basic circuit-
breaker equipment and auxiliary switch 6 NO + 6 NC
Manual closing – manual opening with auxiliary switch 6 NO + 6 NC

Additional equipment: Motor operating mechanism and auxiliary switch

-S14 -S15 -Y9 -X0

HE -S14 14
13
11 -S3 22
-S21 -S22 -S3 -S41 -S42 21
-M1 M P -S1 13

12 14
21
3 -S7 -S6 HG11-2576_en eps 14 A1 HG11-2580b eps
“OPEN”release -K1
-S15 -K1
HA 22
-Y1 13 31 A2

Motor operating mechanism with manual electrical closing -X0 -K1

Manual 32
electrical closing
A1

-Y9

A2

Closing and
anti-pumping

The available possible combinations are described in the chapter “Selection of secondary equipment”.

-X0 -X0 -X0 -X0

33 -S1 43
44
-S1 D1

34 -Y7 U <

D2

A1 A1 A1 1

-Y2 -Y4 -Y6 -R1

A2 A2 A2 2
HG11-2583 eps
HG11-2584 eps
HG11-2585 eps
HG11-2586 eps
-X0 -X0 -X0 -X0
2nd shunt release Undervoltage release
C.t.-operated Low-energy
release 0.5 A c.t.-operated
or 1 A release 0.1 Ws

Legend see page 43

42 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Technical Data

Circuit diagrams

Circuit diagrams (continued)

The circuit diagrams shown here are examples from the manifold possibilities of circuit-breaker wiring.

-X0 -X0

21 11 -S3 22 22 23

-S21 -S1 21 -S7 -S1
13
22 12 14 21 24
21
22 A1
-K1
-S10 -K1
22
21 31 A2
A1
-K1
-M1 M 14 -S41 13 -S42 21
1= 32
13 14 22
D2 A1 -S6
21 -X0
-Y9
-S11 22 HG11-2577b eps A1 HG11-2578d eps
A2
22 -Y1

-S22 A2

21

-X0

Motor operating mechanism with manual mechanical closing Circuit-breaker Signal “closing 1st shunt
tripping signal spring charged” release

Additional equipment: Motor operating mechanism and auxiliary switch (continued)

-X0 -X0

21

-S21

22

A1

-M1 M 11 13 21 23 31 33 41 43 51 53 61 63 71 73 81 83 91 93 101 103 111 113 121 123
1=
-S1
D2
12 14 22 24 32 34 42 44 52 54 62 64 72 74 82 84 92 94 102 104 112 114 122 124

22 HG11-2581b eps HG11-2582a eps 3

-S22

21

-X0 -X0
Contacts available for customer with basic circuit-breaker equipment
Motor operating Auxiliary switch –S1 (12 NO + 12 NC) instead of auxiliary switch 6 NO + 6 NC
mechanism

Legend (also for page 42) S1 Auxiliary switch S14, Anti-pumping X0 Lower part of plug/
S3 Position switch S15 terminal strip
HA Manual opening (opens when closing spring S21, Position switches Y1 1st shunt release
HE Manual closing S6 is charged) S22 (to de-energize the motor Y2 2nd shunt release
K1 Contactor (anti-pumping) S7 Circuit-breaker tripping signal operating mechanism Y4 Current-transformer
M1 Motor operating mechanism Cutout switch for circuit- S41, after charging) operated release
P Energy store S10, breaker tripping signal S42 Position switches Y6 Low-energy current-
R1 Resistance S11 Anti-pumping for (to indicate the charging state) transformer operated release
manual closing Y7 Undervoltage release
Y9 Closing solenoid

Siemens HG 11.03 · 2010 43

Technical Data 3AH3 Vacuum Circuit-Breakers

Operating times, short-circuit protection of motors, consumption data of releases

Operating times Equipment of circuit-breaker Operating time of circuit-breaker

Operating times at rated voltage
of the secondary circuit

Closing time – < 75 ms 1)
Opening time 1st shunt release < 60 ms 1)
2nd and 3rd release < 55 ms
Arcing time – < 15 ms
Break time 1st shunt release < 80 ms
2nd and 3rd release < 60 ms
Dead time – 300 ms
CLOSE/OPEN contact time 1st shunt release < 90 ms
2nd and 3rd release < 70 ms
Minimum command duration Closing solenoid
1st shunt release 45 ms
Pulse time for circuit-breaker tripping signal 2nd and 3rd release 40 ms
1st shunt release 20 ms
Charging time for electrical operation 2nd and 3rd release > 15 ms
Synchronism error between the poles – > 10 ms
– < 15 s
1) Shorter operating times on request. w 2 ms

Short-circuit protection of motors (fuse protection of drive motors)

Rated voltage Operating voltage Power consumption of the motor Smallest possible rated
of the motor current 2) of the m.c.b.
(miniature circuit-breaker)
3 V max. V min. V W (at DC) VA (at AC) with C-characteristic

24 DC 26 20 500 – A
48 DC 53 41 500 –
60 DC 66 51 500 – 16
110 DC 121 93 500 – 8
220 DC 242 187 500 – 6
110 AC 121 93 650 4
230 AC 244 187 – 650 2
– 4
2

2) The current inrush in the drive motor can be neglected due to its very short presence.

Consumption data of releases Power consumption Tripping ranges
Operation at
Release
DC AC 50/60 Hz Tripping voltage Tripping voltage
Closing solenoid 3AY15 10 or tripping current
1st shunt release approx. W approx. VA at DC
(without energy store) 3AY15 10 140 140 85 to 110 % U at AC 50/60 Hz
2nd shunt release 140 140 70 to 110 % U 85 to 110 % U
(with energy store) 3AY11 01 85 to 110 % U
Undervoltage release 3AY11 03 70 50 70 to 110 % U
Current-transformer operated release 3AX11 02 85 to 110 % U
(rated normal current 0.5 or 1 A) 20 20 35 to 0 % U
Current-transformer operated release 3AX11 04 – 10 3) – 35 to 0 % U
(tripping pulse W 0.1 Ws) 90 to 110 % Ia
–– –
–

3) Consumption at pickup current (90 % of the rated normal current) and open armature.

44 Siemens HG 11.03 · 2010

3AH3 Vacuum Circuit-Breakers Annex

Contents

Contents Page

Annex 45

Inquiry form 46
Configuration instructions 47
Configuration aid Foldout page

R-HG11-181.tif

Brandenburg Gate, Berlin, Germany R-HG11-180.eps 4
Switchgear Factory in Berlin, Germany
Siemens HG 11.03 · 2010 45

Annex 3AH3 Vacuum Circuit-Breakers

Inquiry form

Please copy, fill in and return to your
Siemens partner or you can use our
prompted online configurator under
www.siemens.com/energy

Inquiry concerning Technical Data Other values
o 17.5 kV
o 3AH3 circuit-breaker Rated voltage o 7.2 kV o 12 kV o 15 kV o _ _ _ kV
o 3AH37/38 generator o 24 kV o 36 kV o 40.5 kV
o 110 kV
circuit-breaker Rated lightning impulse o 60 kV o 75 kV o 95 kV o _ _ _ kV
withstand voltage o 125 kV o 170 kV o 195 kV
Please o 38 kV
Rated short-duration o 20 kV o 32 kV o 36 kV o _ _ _ kV
o Submit an offer o 70 kV o 95 kV
o Call us power-frequency withstand voltage o 50 kV o _ _ _ kA
o Visit us o 40 kA o 50 kA
Rated short-circuit o 31.5 kA o 72 kA o 3150 A
Your address breaking current o 63 kA o 2500 A o ___A
o 2000 A o 6300 A
Company Rated normal current o 1250 A o 5000 A o 350 mm
Dept. Pole-centre distance o 4000 A o 300 mm
Name o 275 mm
Street o 210 mm
Postal code/city
Phone Secondary equipment
Fax
For possible combinations see pages 17 to 23
4 E-mail
Circuit-breaker equipment o Manual mechanical closing
Siemens AG o Manual electrical closing
o Manual operating mechanism
Dept.
Name Motor operating mechanism o _ _ _ V DC o _ _ _ V AC, _ _ _ Hz
Street
Postal code/city Closing solenoid o _ _ _ V DC o _ _ _ V AC, _ _ _ Hz
Fax
1st shunt release o _ _ _ V DC o _ _ _ V AC, _ _ _ Hz
46 Siemens HG 11.03 · 2010
2nd shunt release o _ _ _ V DC o _ _ _ V AC, _ _ _ Hz

Current-transformer operated release o 0.5 A o 1A o Ն 0.1 Ws o Ն 0.1 Ws
(10 c) (20 c)

Undervoltage release o _ _ _ V DC o _ _ _ V AC, _ _ _ Hz

o Without energy store o With energy store

Auxiliary switch o 6 NO + 6 NC o 12 NO + 12 NC

Low-voltage connection o 24-pole o 24-pole plug o 64-pole plug

terminal strip

o Mechanical interlocking

Operating instructions o English o German o French o Spanish

Application and other requirements

o Please check off _ _ _ Please fill in

You prefer to configure your 3AH3 vacuum circuit-breaker on your own? For configuration of your
3AH3 vacuum circuit-breaker
Please follow the steps for configuration and enter the order number in the configuration aid.
Alternatively you can also use our prompted online configurator under www.siemens.com/energy

Instruction for configuration of the 3AH3 vacuum circuit-breaker 1 2 3 4 5 6 7 – 8 9 10 11 12 – 13 14 15 16
1st step: Definition of the primary part (see pages 13 to 16) 3 AH 3nnn–nnnnn–nnnn– Z

Please specify the following ratings: Possible options: See page 13
to
Rated voltage (Ur) Ur: 7.2 kV to 40.5 kV page 16
Rated lightning impulse withstand voltage (Up) Up: 60 kV to 195 kV
Rated short-duration power-frequency withstand voltage (Ud) Ud: 20 kV to 95 kV See page 17
Rated short-circuit breaking current (Isc) Isc: 31.5 kA to 72 kA See page 18
Rated normal current (Ir) Ir: 1250 A to 6300 A See page 19
Pole-centre distance See page 20
210 mm to 350 mm See page 21
These ratings define the positions 4 to 8 of the order number. See page 22
See page 23
See page 23
See page 24

2nd step: Definition of the secondary equipment (see pages 17 to 23) 3AH3 – – +
+ + + +
Please specify the following equipment features: Possible options: + + +
+
Release combination Shunt release, current-transformer operated release 3AH3 – – +
(position 9) and undervoltage release + + +
Closing solenoid Operating voltages from 24 V DC to 240 V AC + + + +
(position 10) +
Operating voltage of the releases Operating voltages from 24 V DC to 240 V AC 3AH3 – –
(positions 11/12) + + + +
Type of local closing Mechanical closing, + + + +
(position 10) manual electrical closing
Type of operating mechanism and operating voltage of a motor, Manual operating stored-energy mechanism, 3AH3 – – +
if available (position 14) motor operating stored-energy mechanism + + + +
with operating voltages from 24 V DC to 240 V AC + + +
Number of auxiliary contacts 6 NO + 6 NC, 12 NO + 12 NC +
(position 15) 3AH3 – – +
Design of the secondary connection 24-pole terminal strip, 24-pole plug connector, + + +
(position 15) 64-pole plug connector + + + +
Language of the documentation English, German, French, Spanish, other languages on request +
(position 16) 3AH3 – –
Frequency of the operating voltage of the 50 Hz/60 Hz + + + +
secondary equipment at AC (position 16) + + + +

These equipment features define the positions 9 to 16 of the order number. 3AH3 – – +
+ + + +
3rd step: Do you have any further requirements concerning the equipment? (Please refer to page 24) + + +

Should you still need more options than the possible special equipment like halogen-free and 3AH3 – –
flame-retardant or silicone-free version, condensation protection or an additional rating plate, etc., + + +
please contact your responsible sales partner. + + +

Siemens HG 11.03 · 2010 47 3AH3 – –
+ + +
+ + +

Published by and copyright © 2010:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany

Siemens AG
Energy Sector
Power Distribution Division
Medium Voltage
Nonnendammallee 104
13623 Berlin, Germany

For more information, please contact our
Customer Support Center.
Phone: +49 180 524 70 00
Fax: +49 180 524 24 71
(Charges depending on provider)
E-mail: support.energy@siemens.com

Order No. E50001-K1511-A031-A3-7600
Printed in Germany
Dispo 40402, c4bs 7470
KG 05.10 2.0 50 En
3600 / 24904

Printed on elementary chlorine-free bleached paper.

All rights reserved.
If not stated otherwise on the individual pages of this
catalog, we reserve the right to include modifications,
especially regarding the stated values, dimensions and weights.
Drawings are not binding.
All product designations used are trademarks or product
names of Siemens AG or other suppliers.
If not stated otherwise, all dimensions in this
catalog are given in mm.

Subject to change without prior notice.
The information in this document contains general
descriptions of the technical options available, which
may not apply in all cases. The required technical
options should therefore be specified in the contract.

www.siemens.com/energy

R-HG11-182.tif