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circuit breaker VL1250H high breaking capacity Icu=70kA, 415V AC
3-pole, line protection trip unit ETU10, LI In=1250A, rated current
IR=500...1250A, overload protection, II=1.25 to 10xIN, short-circuit
protection without auxiliary release without auxiliary/alarm switch
Model
type of the driving mechanism / motor drive No
design of the overcurrent release ETU10
General technical data
number of poles 3
size of the circuit-breaker 3VL7
mechanical service life (switching cycles) / typical 3 000
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 the current-dependent overload release / fullscale value
1 250 A
of instantaneous short-circuit trip unit / initial
value
1 563 A
of instantaneous short-circuit trip unit / full-scale
value
12 500 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 1 187.5 A
at 60 degrees centigrade / rated value 1 187.5 A
at 65 degrees centigrade / rated value 1 000 A
at 70 degrees centigrade / rated value 1 000 A
Short circuit
breaking capacity operating short-circuit current (Ics)
at 240 V / rated value 50 kA
at 415 V / rated value 35 kA
at 500 V / rated value 30 kA
at 690 V / rated value 15 kA
breaking capacity maximum short-circuit current (Icu)
at 240 V / rated value 100 kA
at 415 V / rated value 70 kA
at 440 V / rated value 50 kA
at 480 V / acc. to NEMA / rated value 50 kA
at 500 V / rated value 40 kA
at 600 V / acc. to NEMA / rated value 30 kA
at 690 V / rated value 30 kA