JCZ8-12 Indoor vacuum contactor 12KV (fixed)

The main function of the high-pressure vacuum contactor is to operate the large load current frequently, especially suitable for harsh environment and flammable and explosive dangerous places.

The working principle of the high pressure vacuum contactor is similar to that of the low pressure contactor, the contactor is drawn by charging the coil, and the contactor returns when the coil is out of power. The main difference is that the high-pressure vacuum contactor can be operated on and off in a vacuum environment, and the vacuum arc extinguishing chamber is used to extinguish the arc, which is suitable for the on-off of high voltage and large current.

Product Detail

The high voltage vacuum contactor is designed to operate without protection, similar to the switch on a household light, it cannot disconnect the short circuit current, so it is often used in conjunction with a high voltage vacuum circuit breaker to provide more comprehensive circuit protection. Because of its small size, light weight, frequent operation and other characteristics, this equipment is widely used in a variety of frequent operation fields, including power system, metallurgy, mining, rolling stock, rail transit and other industries of high voltage equipment, to ensure the safety of equipment and personnel.

Technical parameters:

NO.	Parameters		Unit	Value
				BKZC(R)-12-630/400/250			BKZC(R)-12-630/400/250
1	Rated Voltage		kV	7.2			12
2	Rated Current		A	630	400	250	630	400	250
3	Rated closing current (rms)		A	6300	4000	2500	6300	4000	2500
4	rated breaking current			5040	3200	2500	5040	3200	2500
5	4S thermal current			6300	4000	2500	6300	4000	2500
6	Limit breaking current			6300	4000	2500	6300	4000	2500
7	Power frequency withstand voltage		kV	32			42
8	operating frequency		Times/h	300
9	Electric life time	AC-3	×10⁴Times	25
		AC-4		10
10	Mechanical life			30
11	Rated operating voltage		V	AC110/220
12	Closing coil pull current		A	≤ DC6/3
13	Holding coil holding current			D:DC0.32/0.16
14	Shunt trip coil current			J:DC2.5/1.3