3WL Air Circuit Breakers
3
Siemens · 2012
Introduction
Switching capacity
1)
Size II with I
n max
≤ 2500 A.
2)
Size II with I
n max
= 3200 A and I
n max
= 4000 A.
3)
At a rated voltage of ≥ 690 V the I
cw
value of the circuit breaker cannot be
greater than the I
cu
or I
cs
value at 690 V.
4)
Rated operational voltage U
e
= 1150 V.
5)
At U
e
= 220 V DC.
L, S, I, N, G: Designation according to IEC 60947-2, Appendix K.
6)
At U
e
= 300 V DC.
7)
At U
e
= 600 V DC.
8)
At U
e
= 1000 V DC.
9)
Values also apply to version 690 V + 20 % with Z option "A16".
Sizes I II III
Type 3WL11 3WL12 3WL13
Switching capacity class N
S H
N S H
H
C
3-pole
C
4-pole
Short-circuit breaking capacity
Rated operational voltage U
e
up to 415 V AC
I
cu
kA 55 66 85 66 80 100 100 150 130
I
cs
kA 55 66 85 66 80 100 100 150 130
I
cm
kA 121 145 187 145 176 220 220 330 286
Rated operational voltage U
e
up to 500 V AC
I
cu
kA 55 66 85 66 80 100 100 150 130
I
cs
kA 55 66 85 66 80 100 100 150 130
I
cm
kA 121 145 187 145 176 220 220 330 286
Rated operational voltage U
e
up to 690 V AC
I
cu
kA 42 50 66 50 75 85 85 150 130
I
cs
kA 42 50 66 50 75 85 85 150 130
I
cm
kA 88 105 145 105 165 187 187 330 286
Rated operational voltage U
e
up to 1000 V/1150 V AC
I
cu
kA -- -- 50
9)
-- -- 50 50 70
4)
70
4)
I
cs
kA -- -- 50
9)
-- -- 50 50 70
4)
70
4)
I
cm
kA -- -- 105
9)
-- -- 105 105 154
4)
154
4)
Rated short-time withstand current
I
cw
of the circuit breakers
3)
0.5 s kA 55 66 75 66 80 100 100 100 100
1 s kA
42 50 66 55 66 80 100 100 100
2 s kA
29,5 35 46 39 46 65
1)
/70
2)
80 80 80
3 s kA
24 29 37 32 44 50
1)
/65
2)
65 65 65
Short-circuit breaking capacity
I
cc
of the non-automatic air circuit breakers
Up to 500 V AC kA 55 66 75 66 80 100 100 100 100
Up to 690 V AC kA
42 50 66 50 75 85 85 100 100
Up to 1000 V /1150 V AC kA
-- -- 50
9)
-- -- 50
4)
50
4)
70
4)
70
4)
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
5)
/30
6)
/25
7)
/20
8)
--
--
N
S
H
N
S
H
H
C C
DC
Circuit breaker with ECO switching capacity N
Circuit breaker with standard switching capacity S
Circuit breaker with high switching capacity H
Circuit breakers with very high switching capacity C
Non-automatic air circuit breakers with DC switching
capacity
These switching capacities are indicated in the corre-
sponding tables by the symbols shown on orange back-
grounds.
N
S
H
C
DC
Abbreviations
(functions)
L = Long Time Delay = Overload protection
S
= Short Time Delay = Short-circuit protection
(short-time delayed)
I
= Instantaneous = Short-circuit protection
(instantaneous)
N
= Neutral Protection Neutral conductor protec-
tion
G
= Ground Fault Ground-fault protection
© Siemens AG 2011
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