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circuit breaker VL1250N standard breaking capacity Icu=55kA, 415V
AC 3-pole, non-auto. air circ. br. trip unit magnetic In=1250A, rated
current II=12000A, short-circuit protection without auxiliary release
without auxiliary/alarm switch
Model
type of the driving mechanism / motor drive No
design of the overcurrent release M
General technical data
number of poles 3
size of the circuit-breaker 3VL7
mechanical service life (switching cycles) / typical 3 000
electrical endurance (switching cycles) / typical 1 500
utilization category A
performance class for circuit breaker N
reference code / acc. to DIN 40719 extended
according to IEC 204-2 / acc. to IEC 750
Q
operating frequency / maximum 30 1/s
Current
continuous current / rated value 1 250 A
derating temperature / for the rated value of the
continuous current
50 degrees centigrade
adjustable current response value current
of instantaneous short-circuit trip unit / initial
value
12 000 A
of instantaneous short-circuit trip unit / full-scale
value
12 000 A
Main circuit
operating frequency
1 / rated value 50 Hz
2 / rated value 60 Hz
operational current
at 40 degrees centigrade / rated value 1 250 A
at 50 degrees centigrade / rated value 1 250 A
at 55 degrees centigrade / rated value 1 162 A
at 60 degrees centigrade / rated value 1 162 A
at 65 degrees centigrade / rated value 1 075 A
at 70 degrees centigrade / rated value 1 075 A
Short circuit
breaking capacity operating short-circuit current (Ics)
at 240 V / rated value 35 kA
at 415 V / rated value 28 kA
at 500 V / rated value 20 kA
at 690 V / rated value 10 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 25 kA
at 500 V / rated value 25 kA
at 600 V / acc. to NEMA / rated value 20 kA
at 690 V / rated value 20 kA