Siemens SENTRON 3WL10 - Page 39

If used with an external protection relay with a maximum delay time of 500ms, the
switch disconnector has a breaking capacity at the maximum rated operational voltage
(U
e
) that corresponds to the value of the one-second rated short-time current (I
cw
). The
"non-automatic air circuit breaker" is sometimes also called a load interrupter switch because
it can switch overcurrents.
3WL10 non-automatic air circuit breakers
3WL10 non-automatic air circuit breakers are only available in classes N and S.
Number of poles 3, 4
Rated operational
voltage
U
e
AC (50/60Hz) V 690
Rated insulation
voltage
U
i
AC (50/60Hz) V 1000
Rated impulse
withstand voltage
U
imp
 kV 12
Isolating features    IEC 60947-3
Current-carrying capacity of the
neutral pole for 4-pole non-auto‐
matic
circuit breakers
  %I
n
100
Breaking capacity    N S
Rated uninterrupted current
(at 40 °C)
I
u
AC (50/60 Hz) A 630 630
I
u
AC (50/60 Hz) A 800 800
I
u
AC (50/60 Hz) A 1000 1000
I
u
AC (50/60 Hz) A 1250 1250
Rated short-circuit
making capacity up to 690 V
I
cm
disconnector only kA 88 105
with upstream ACB air
circuit breaker
kA 145 145
Rated short-time
withstand current
I
cw
1s kA 42 50
I
cw
3s kA 24 36
Utilization category
(according to IEC 60947-3)
   AC-23A AC-23A
Rated conditional
short-circuit current
up to 690 V
I
cc
 kA 42 50
3VA27 non-automatic air circuit breakers
The 3VA27 non-automatic air circuit breaker is o󹪜ered in class M.
Number of poles 3, 4
Conventional thermal current I
th
A 800 1000 1250 1600
Rated operational current AC22 I
e
A 800 1000 1250 1600
AC23 I
e
A 800 1000 1250 1250
Rated operational voltage U
e
AC (50-60 Hz) V 690
DC V 750
Description
2.8Basic unit
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
38 Equipment Manual, 10/2023, L1V30499596002-03