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Vacuum Circuit Breaker VCB VED-12KV 630A 1000A 4000A from JUCRO Electric

VCB,vacuum circuit breaker from JUCRO Electric

VED-12 series indoor high voltage vacuum circuit breaker VCB is suitable for 12kV air-insulated indoor

Switchgear, used as proteCTion and control unit of power equipment of industrial & mining enterprise. Due

to the super excellence, it is especially suitable for locations where requires the frequent operation under

rated working current or multiple breaking under short circuit breaking current. The circuit breaker adoPTs

the integrated design of operating mechanism and circuit breaker body, servers as not only fixed

installation, but also draw-out type equipped with a special propelling mechanism.

VED-12 has two main types.

One is Draw-out type. Model No. is VED-12D.

The other is Fixed type. Model No. is VED-12F.

Main specifications and technical parameters

No.	Item	Unit	parameter
1	Rated voltage	KV	12
2	Rated frequency	Hz	50
3	Rated lightning impulse withstand voltage (1 min)	KV	75
4	Rated short-time power frequency withstand voltage (1 min)	KV	42
5	Rated short-circuit breaking current	KA	20	25		21.5	40
6	Rated current	A	630 1000 1250	630 1000 1250 1600		1250 1600 2000 2500	1600 2500 3150 4000
7	Rated peak withstand current	KA	50	63		80	100
8	Rated shorted-time withstand current (4S)	KA	20	25		31.5	40
9	Power frequency withstand voltage of secondary circuit (1min)	V	2000
10	Rated operation sequence		O-0.3s-CO-180s-CO O-180s-CO-180s-CO⁺
11	Rated breaking current of (single/back to back)capacitor bank	A	630/400		800/400
12	Opening time(rated voltage)	ms	20~50
13	Closing time(rated voltage)	ms	30~70
14	Rated short-time current breaking times	Times	50		30
15	Mechanical life	Times	30000
16	Rated opening/closing voltage	V	AC110,220; DC110,220
17	Rated voltage of energy-storage motor	V	AC110,220; DC110,220