12KV Outdoor Vacuum Circuit Breaker

Type: ZW32
Vacuum circuit-breaker(VCB) is three-phase AC 50Hz, rated voltage 12kV outdoor high-voltage switch equipment. It is suitable for dropout, closing load current, overload current and short-circuit current of the city or the rural electrical power distribution system.
Circuit breaker is brand-new miniaturized design, entire seal structure, unique explosion chamber seal technology, good sealing property, moisture-proof, guards against congeals circuit breaker isolator combination electric appliance is composed by circuit breaker and isolator two parts.

No.	Item		Unit	Data
1	Rated voltage		kV	12
2	Rated current		A	400	630	630
3	Rated short circuit breaking current		kA	12.5	16	20
4	Rated short circuit breaking current (peak value)			31.5	40	50
5	rated peak value withstand current			31.5	40	50
6	Rated short circuit withstand current			12.5	16	20
7	Rated short-circuit duration		s	4
8	Rated insulation level	1min power frequency withstand voltage	kV	Phase to phase,to ground 42,fracture 48
		Lighting Impulse withstand voltage(peak value)		Phase to phase,to ground 75,fracture 48
9	Rated sequence of operations			O-0.3s-CO-180s-CO
10	Mechanical life		Time	10000
11	Rated short-circuit current breaking times		Time	30
12	Rated operation voltage(opening-closing coil)		V	DC220,110,AC220,110