SENTRON Switching and Protection Devices — Air Circuit Breakers
5
Siemens · 2009
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.
Size I II III
Type 3WL11 3WL12 3WL13
Switching capacity class N
S
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 66 80 100 100 150 130
I
cs
kA 55 66 66 80 100 100 150 130
I
cm
kA 121 145 145 176 220 220 330 286
Rated operational voltage U
e
up to 500 V AC
I
cu
kA 55 66 66 80 100 100 150 130
I
cs
kA 55 66 66 80 100 100 150 130
I
cm
kA 121 145 145 176 220 220 330 286
Rated operational voltage U
e
up to 690 V AC
I
cu
kA 42 50 50 75 85 85 150 130
I
cs
kA 42 50 50 75 85 85 150 130
I
cm
kA 88 105 105 165 187 187 330 286
Rated operational voltage U
e
up to 1000 V/1150 V AC
I
cu
kA -- -- -- -- 45 50 70
4)
70
4)
I
cs
kA -- -- -- -- 45 50 70
4)
70
4)
I
cm
kA -- -- -- -- 95 105 154
4)
154
4)
Rated short-time withstand current I
cw
of the circuit breakers
3)
0.5 s kA 50 66 66 80 100 100 100 100
1 s kA
42 50 55 66 80 100 100 100
2 s kA
29.5 35 39 46 65
1)
/70
2)
80 80 80
3 s kA
24 29 32 37 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 50 66 66 80 100 100 100 100
Up to
690 V AC
kA
42 50 50 75 85 85 100 100
N S N S H H C C
Circuit breakers with ECO switching capacity N
(I
cu
= I
cs
up to 55 kA size I/up to 66 kA size II at 500 V)
Circuit breakers with standard switching capacity S
(I
cu
= I
cs
up to 66 kA size I/up to 80 kA size II at 500 V)
Circuit breakers with high switching capacity H
(I
cu
= I
cs
up to 100 kA at 500 V)
Circuit breakers with very high switching capacity C
(I
cu
= I
cs
up to 150 kA (3-pole)/130 kA (4-pole)
at 500 V)
Circuit breakers with DC switching capacity
These circuit breakers are indicated in the Technical
specifications by orange backgrounds.
N
S
H
C
DC
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