vacuum interrupter for indoor circuit breaker

1.vacuum interrupter 2.Non-exposed arc 3.Once Seal-Exhaust 4.Oxygen-free copper ring transition in sealing structure

low and high voltage ceramic vacuum interrupter for indoor circuit  breaker
Main Technical Data
Rated voltage	kv	12
Rated current	A	1250/1600
Rated frequency	Hz	50
Rated short-time power frequency withstand voltage(1min)	kv	42
Rated lighting impulse withstand voltage	kv	75
Rated short-circuit breaking current	kA	31.5
Rated short-circuit making current(peak)	kA	80
Rated operations of short-circuit breaking current interruption	times	30
Rated single capacitor bank breaking current	A	630
Rated short-time withstand current	kA	31.5
Rated peak withstand current	kA	80
Rated duration of short-circuit	s	4
Mechanical life	times	20000
Contact closing force due to bellows and atmosphere	N	120±50
Counterforce at rated contact stroke	N	190±60
Circuit resistance at rated contact force	μΩ	≤20
Shelf life	years	20
Contact erosion limit	mm	3
Weight of moving parts	kg	≤1.5
Mechanical Data Required For Matched Vacuum Switchgear
Rated contact stroke	mm	10±1
Average opening speed	m/s	1.0±0.25
Average closing speed	m/s	0.65±0.15
Added contact force	N	3150±200
Contact bouncing duration at closing operation	ms	≤2
Contact bouncing bank amplitude of opening operation	ms	≤2
Three-pole simultaneity	ms	≤1
Note:Rated characteristics can be given on requirment