Zn63a Vs1 12kv 1250a Electrical Vcb Circuit Breaker

The zn63a vs1 12kv 1250a electrical vcb circuit breaker adopts vacuum interruption technology instead of insulation oil and SF6 gas insulation, which makes the zn63a vs1 12kv 1250a electrical vcb circuit breaker maintenance free and environmental friendly. It widely equips on KYN28 and HXGN12 type electrical panels, even more, it also used in combination with SF6 load switch to make a switchgear more compact.

In general speaking, a 12kv 1250A rated current vcb circuit breaker with 31.5kA short circuit breaking current is as taken as the main circuit breaker in the input panel, which used in combination with 12kv isolating switch and earthing switch. Meanwhile, the vacuum interrupter could be cast resin pole or insulating cylinder pole. The cast resin pole has no air gap inside which brings a better insulation performance and compact design.

Technical Parameter

Product FAQ:

Q: What does ZN63A or VS1 12kV 1250A mean?

A: In the letter of ZN63A, Z stands for “indoor installation”, N refers to “indoor switchgear” and 63A is the product design code. Meanwhile, VS1 is a common designation for indoor vacuum circuit breakers, which is the same meaning as ZN63A. additionally, 12kV indicates the rated voltage, and 1250A is the rated current.

Q: Where is the zn63a vs1 12kv 1250a electrical vcb circuit breaker typically used?

A: It is mainly used in medium voltage switchgear such as KYN28-12 and HXGN cabinets. Typical applications include power plants, substations, industrial facilities, mining enterprises, and infrastructure projects requiring safe and reliable power distribution.

Q: What type of operating mechanism does a zn63a vs1 12kv 1250a electrical vcb circuit breaker use?

A: The zn63a vs1 12kv 1250a electrical vcb circuit breaker is equipped with a spring operating mechanism. This design ensures quick and reliable opening/closing, long mechanical endurance, and minimal maintenance compared with older electromagnetic mechanisms.