The Siemens Circuit Breaker is high quality!
circuit breaker VL400N standard breaking capacity Icu=55kA, 415V
AC 3-pole, line protection Electronic Trip Unit ETU20, LSI In=315A,
rated current IR=128...315A, overload protection, ISD=1.5 to 10xIR,
II=11xIN 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 315 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
315 A
of instantaneous short-circuit trip unit / initial
value
3 465 A
of instantaneous short-circuit trip unit / full-scale
value
3 465 A
Main circuit
operating frequency
1 / rated value 50 Hz
2 / rated value 60 Hz
operational current
at 40 degrees centigrade / rated value 315 A
at 50 degrees centigrade / rated value 315 A
at 55 degrees centigrade / rated value 299.3 A
at 60 degrees centigrade / rated value 299.3 A
at 65 degrees centigrade / rated value 252 A
at 70 degrees centigrade / rated value 252 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
Short circuit
breaking capacity operating short-circuit current (Ics)
at 240 V / rated value 65 kA
at 415 V / rated value 55 kA
at 500 V / rated value 20 kA
at 690 V / rated value 8 kA
breaking capacity maximum short-circuit current (Icu)
at 240 V / rated value 65 kA
at 415 V / rated value 55 kA
at 440 V / rated value 35 kA
at 480 V / acc. to NEMA / rated value 35 kA
at 500 V / rated value 25 kA
at 600 V / acc. to NEMA / rated value 20 kA
at 690 V / rated value 15 kA