Low Voltage Ckj20 Series Vacuum Switch for Capacitor Bank

General description
This series of contactors use vacuum switch tubes as arc extinguishing components, which have the characteristics of no arc flash, long life, no noise, small size, safe and reliable. It can be widely used in the power network of AC 50/60 Hz and rated operating voltage of 1140 volts to connect and disconnect circuits, and form an electromagnetic starter with appropriate thermal relays or electronic protection devices and other related protection devices, especially suitable for forming Explosive electromagnetic starter and various power control screens. It is the most ideal circuit device for coal, petroleum, chemical industry, metallurgy, machinery, transportation and power industries.

Technical parameters

Main circuit rated voltage	kV	1.14
Main circuit rated current	A	630	800
Main circuit making capacity	A/100times	6000	6000
Main circuit breaking capacity	A/10times	4800	5000
Limit breaking capacity	A/ 3 times	6000	6000
Electrical life AC3	Ten-thousand times	60
Electrical life AC4	Ten-thousand times	6
Mechanical life time	Ten-thousand times	300
Rated operating frequency AC3	times/h	600
Rated operating frequency AC4	times/h	120
Short-time operation	times/h	2000
Contact opening	mm	2.5±0.3
Over travel	mm	≥1