3WL Air Circuit Breakers
3WL Non-Automatic Air Circuit Breakers up to 4000 A (DC)
General data
52
Siemens · 2012
■
Technical specifications
1)
Make-time through activation solenoid for synchronization purposes
(short-time excited) 50 ms.
2)
Maintenance means: replace main contact elements and arc chutes
(see Operating Manual).
3)
Further technical specifications on request.
1)
At U
e
= 220 V DC.
2)
At U
e
= 300 V DC.
3)
At U
e
= 600 V DC.
4)
At U
e
= 1000 V DC.
Sizes II
Type
3WL12 10 3WL12 20 3WL12 40
Rated current I
n
at 40 °C
Main conductors A
... 1000 2000 4000
Rated operational voltage U
e
(1000 V version, see Catalog LV 10.1, order code "A05")
V DC
... 600/1000 ... 600/1000 ... 600/1000
Rated insulation voltage U
i
V DC 1000 1000 1000
Rated impulse withstand voltage U
imp
• Main current paths
• Auxiliary circuits
• Control circuits
kV
kV
kV
12
4
2,5
12
4
2,5
12
4
2,5
Isolating function to EN 60947-2 Yes Yes Yes
Permissible ambient temperature
•Operation
•Storage
°C
°C
–25/+70
–40/+70
–25/+70
–40/+70
–25/+70
–40/+70
Permissible load
at rear horizontal main circuit
connections
(Cu painted black)
up to 40 °C
up to 55 °C
up to 60 °C
up to 70 °C
A
A
A
A
1000
1000
1000
1000
2000
2000
2000
1950
4000
3640
3500
3250
Power loss at I
n
for symmetrical loads
Withdrawable circuit breakers W
280 770 1640
Switching times
• Make-time
• Opening time
• Electrical make-time (through activation solenoid)
1)
• Electrical opening time (through shunt release)
• Electrical opening time (instantaneous undervoltage release)
ms
ms
ms
ms
ms
35
34
100
73
73
35
34
100
73
73
35
34
100
73
73
Endurance
3)
• Mechanical (without maintenance) Operating cycles
• Mechanical (with maintenance)
2)
Operating cycles
• Electrical (without maintenance) Operating cycles
• 1000 V version Operating cycles
• Electrical (with maintenance)
2)
Operating cycles
10000
15000
6000
1000
15000
10000
15000
6000
1000
15000
10000
15000
4000
1000
15000
Switching frequency
• 600 V version
• 1000 V version
1/h
1/h
60
20
60
20
60
20
Mounting position
Degree of protection IP20 without cabinet door, IP41 with door sealing
frame, IP55 with cover
Auxiliary conductors (Cu)
Max. number of
auxiliary conductors × cross-
section
(solid/stranded)
Standard connection = strain-relief clamp
• Without end sleeve
• With end sleeve acc. to DIN 46228 Part 2
• With twin end sleeve
2 × 0.5 mm
2
(AWG 20) ... 2 × 1.5 mm
2
(AWG 16); 1 × 2.5 mm
2
(AWG 14)
1 × 0.5 mm
2
(AWG 20) ... 1 × 1.5 mm
2
(AWG 16)
2 × 0.5 mm
2
(AWG 20) ... 2 × 1.5 mm
2
(AWG 16)
Optional connection = tension spring
• Without end sleeve
• With end sleeve acc. to DIN 46228 Part 2
2 × 0.5 mm
2
(AWG 20) ... 2 × 2.5 mm
2
(AWG 14)
2 × 0.5 mm
2
(AWG 20) ... 2 × 1.5 mm
2
(AWG 16)
Weights 3-pole
4-pole
• Fixed-mounted circuit breakers
• Withdrawable circuit breakers
• Guide frames
• Fixed-mounted circuit breakers
• Withdrawable circuit breakers
• Guide frames
kg
kg
kg
kg
kg
kg
56
60
31
67
72
37
56
60
31
67
72
37
64
68
45
77
82
54
N S E 0 _ 0 0 0 6 1 a
3 0 °
3 0 °
N S E 0 _ 0 0 0 6 2 a
3 0 ° 3 0 °
N S E 0 _ 0 0 9 2 7 a
h
= 1 m m
m a x .
Sizes II
Type 3WL12
Switching capacity class DC
Short-circuit breaking capacity
Up to 220 V DC
Up to 300 V DC
Up to 600 V DC
Up to 1000 V DC
I
cc
I
cc
I
cc
I
cc
kA
kA
kA
kA
35
30
25
20
Rated short-time withstand current
I
cw
0.5 s
1 s
2 s
3 s
kA
kA
kA
kA
--
35
1)
/30
2)
/25
3)
/20
4)
--
--
© Siemens AG 2011
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