China Vacuum Circuit Breaker | Reliable Electrical Solutions

ZN63 (VS1)-12 is a 12kV indoor high voltage vacuum circuit breaker for industrial and mining enterprises, power plants and substations. It is designed for frequent operation, stable performance and easy installation, especially suitable for control and protection of high voltage power systems. It complies with several standards, such as IEC 62271-100 and GB 1984, and is able to operate within a temperature range of -40°C to +40°C, with a relative humidity of up to 95%, and is suitable for environments with an altitude of up to 1000 meters above sea level.

◆ Technical Parameters

1.1 Technische parameters

Item	Eenheid	Reference value
Nominale spanning	kV	12
Power frequency voltage(when losing a circuit)	kV	Breaker 42
Rated insulation level Impulse withstand voltag(when losing a circuit)	kV	Breaker 75
Rated frequency	Hz	50/60
Nominale stroom	A	630/1250/1600/2000/2500/3150/4000
Nominale kortsluitstroom	kA	20,25,31.5,40
Nominale kortsluitstroom (piekwaarde	kA	50,63.80,100
Nominale korteduurbestendigheid	kA	20,25,31.5,40
Rated withstand current (peak value)	kA	506,380,100
Vereiste bedieningsvolgorde		0-0,3s-CO-180s-CO
Rated short-circuit duration	S	4
Times of making-breaking with the rated short-circuit current	Times	30
Mechanische levensduur	Times	10000
Weight	kg	110

1.2 Mechanische parameters

item	Eenheid	Reference value
Gat van contacten	mm	11±1
Contact overtrave	mm	3.5±0.5
Gemiddelde snelheid	mvs	0.6±0.2
Gemiddelde remsnelheid	m/s	1.1±0.2
Stuitertijd bij contact maken	ms	≤2
Niet-synchroon contact maken/breken	ms	≤2≤3(40kA
Weerstand van het circuit van elke fase	μ Q	≤80
Toelaatbare totale slijtagedikte van het bewegende/bevestigde contact	mm	3