12KV Indoor Vacuum Circuit Breakers

Type: ZN96
High voltage solid seal vacuum circuit breaker (VCB)i s a high voltage indoor switch-gear with rated voltage 12kV, three-phase AC 50Hz. Its third generation vacuum circuit breaker of which the vacuum extinguish arc part and conduct connector are made of epoxide resin being cast into pole with special technique, and to be installed on Vs1 mechanism to produce.
Main technical characteristic
1. The application of the miniaturization super-low resistance vacuum extinguish arc part.
2. The inside and outside dual-skirt ledge design of the solid seal pole installation side.
3. High reliability, extinguish arc exempt-maintain.
4. Miniaturization design of phase distance can be reduced to 30~60mm.
The operation of the product is spring storage power pattern, and can be operated electrically or manually.

Item		Unit	Data
			31.5kA	40kA
Rated voltage		kV	12
Maximum working voltage		kV	12
Rated current		A	1250,1600	2000 2500,3150
Rated short circuit breaking current		kA	31.5	40
Rated short circuit breaking current(peak value)		kA	80	100
Rated peak withstand current		kA	80	100
4S rated short time withstand current		kA	31.5	40
Rated insulation level	Power frequency withstand voltage	kV	42 (fracture 48)
	Impulse withstand voltage		75 (fracture 85)
Rated sequence of operations			O-0.3s-CO-180s-CO
Mechanical life		Time	20000
Breaking times for rated short circuit breaking current		Time	50
Operating voltage		V	110,220 (DC or AC)
Clearance between open contacts		mm	11±1