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VK172-12P Vacuum circuit breaker with fixed pole


VK172-12P indoor high-voltage vacuum circuit breaker adopts a spring operating mechanism, which can store energy with AC and DC power supplies or manually. It has the advantages of small size, strong breaking capacity, high insulation strength, etc. The product can provide control and protection for distribution facilities under normal or fault conditions of the distribution system (especially under short-circuit conditions). Under rated parameters, it can operate frequently and disconnect short-circuit current for many times. The circuit breaker can be used not only for fixed installation units, but also with special propulsion mechanism to form a handcart unit. The secondary protection function is powerful, and the closing and opening coil anti burning, three forced opening and anti tripping functions are compatible with comprehensive protection.

Product Information



VK172-12P indoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is an indoor switchgear element with rated voltage of 12kV and below and AC 50Hz. The circuit breaker is used together with KYN28A-12 switch cabinet,It can also be installed in fixed switchgear such as XGN2. The products comply with GB 1984 high voltage AC circuit breakers and GB/T 11022 common technical requirements for high voltage switchgear and control equipment standards

JB/T 3855 "high voltage AC vacuum circuit breaker", DL/T 403 "technical conditions for ordering 12kv~40.5kv high voltage vacuum circuit breaker" and other standards. The circuit breaker adopts a spring operating mechanism,


Energy can be stored by AC and DC power supply, or manually. It has the advantages of small size, strong breaking capacity, high insulation strength, etc.

The product can provide control and protection for distribution facilities under normal or fault conditions of the distribution system (especially under short-circuit conditions). Under rated parameters,

It can operate frequently and cut off short-circuit current for many times. The circuit breaker can be used for both fixed installation unit and special propulsion mechanism to form a handcart unit.




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