The Siemens Circuit Breaker is high quality!
circuit breaker VL400N standard breaking capacity Icu=55kA, 415V
AC 3-pole, line protection trip unit ETU20, LSI In=400A, rated current
IR=160...400A, overload protection, ISD=1.5 to 10xIR, II=11 xIN
short-circuit protection without auxiliary release without
auxiliary/alarm switch
Model
type of the driving mechanism / motor drive No
design of the overcurrent release ETU20
General technical data
number of poles 3
size of the circuit-breaker 3VL4
mechanical service life (switching cycles) / typical 20 000
Current
continuous current / rated value 400 A
derating temperature / for the rated value of the
continuous current
50 degrees centigrade
adjustable current response value current
of the current-dependent overload release / fullscale value
400 A
of instantaneous short-circuit trip unit / initial
value
4 400 A
of instantaneous short-circuit trip unit / full-scale
value
4 400 A
Main circuit
operating frequency
1 / rated value 50 Hz
2 / rated value 60 Hz
operational current
at 40 degrees centigrade / rated value 400 A
at 50 degrees centigrade / rated value 400 A
at 55 degrees centigrade / rated value 380 A
at 60 degrees centigrade / rated value 380 A
at 65 degrees centigrade / rated value 320 A
at 70 degrees centigrade / rated value 320 A
Auxiliary circuit
number of CO contacts / for auxiliary contacts 0
number of NC contacts / for auxiliary contacts 0
number of NO contacts / for auxiliary contacts 0