Siemens SENTRON 3WL10 - Page 43

Description
2.7 Basic unit
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
41
3VA27 non-automatic air circuit breakers
The 3VA27 non-automatic air circuit breaker is offered 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
Rated insulation voltage
U
i
V
1000
Rated impulse withstand
voltage
U
imp
kV 8
Rated short-circuit making
capacity
I
cm
disconnector
only
kA 40
with up-
stream
circuit brea-
ker
kA 440
Rated short-time current
I
cw
1 sec
kA
20
Reference standard
IEC 60947-3
Endurance
Mechanical endurance
No. of operating
cycles
10,000
Operating cycles/h
60
Electrical endurance 415 V AC No. of operating
cycles
2000
690 V AC
Operating cycles/h
500