Outdoor high voltage vacuum circuit breaker 1.CE,RoHS approved; 2.12kV,50Hz; 3.Best price; 4.New design and good quality.

ZW8-12 Series Outdoor high voltage vacuum circuit breaker

Technical parameters

Main Technical Data
Rated voltage	kv	12
Rated lighting impulse withstand voltage	kv	Interphase or to ground 75,fructure 80
Rated short-time power frequency withstand voltage(dry)	kv	Interphase or to ground 42,fructure 48
Rated short-circuit breaking current	kA	25	31.5	40
Rated current	A	630/1250 /1600	1250/1600 /2000/2500	1600/2000 /3150
Rated thermostability current(valid)	kA	25	31.5	40
Rated dynamic stability current(peak)	kA	63	80	100
Rated short-circuit making current(peak)	kA	63	80	100
Rated operations of short-circuit breaking current interruption	times	50(40kA is 30)
Rated working current of overcurrent and tripping coil	A	5
Rated operating sequence		0-0.3-CO-180s -CO/ 0-180s-CO-180s-CO(40KA)
Mechanical life	times	10000
Rated current of auxiliarate switch	A	AC10,DC5
Rated voltage of energy saving release	v	AC,DC220       AC,DC110
Closing time	ms	≤75
Opening time	ms	≤60(40)
Power of energy saving motor	w	275
Energy saving time	s	≤15
Mechanical life	times	20000

Mechanical characteristics adjustment data

1.Rated contact stroke mm 11±1;

2.Contact overtravel mm 8±2;

3.Average opening speed m/s 1.0~1.8;

4.Average closing speed m/s 0.6~1.1 0.8~1.3 0.8~1.3;

5.Contact bouncing duration at closing operation ms ≤2;

6.Core distance between phases mm 210,230,250,275;

7.Three-pole simultaneity ms ≤2;

8.Condactive circuit resistance of each phases μΩ <40.

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ZW8-12 Outdoor high voltage vacuum circuit breaker