KYN28A-12 indoor AC high-voltage metal armored movable switchgear is a complete set of distribution equipment for 3-10kV three-phase AC 50Hz single busbar and single busbar segmented system. Mainly used for power plants, small and medium-sized generators for power transmission, industrial and mining enterprises for power distribution, and secondary substations in the power system for power reception, transmission, and starting of large high-voltage motors. Used for control, protection, and monitoring purposes.

This switchgear has interlocking functions to prevent the push-pull circuit breaker handcart with load, prevent the accidental opening and closing of the circuit breaker, prevent the grounding switch from closing the circuit breaker when it is in the closed position, prevent accidental entry into the live compartment, and prevent the accidental closing of the grounding switch when it is live. It can be equipped with both VS1 vacuum circuit breakers and ABB's VD4 vacuum circuit breakers. It is a high-performance power distribution device.

The product complies with standards such as GB3906 "3-35kV AC Metal Enclosed Switchgear", IEC60298 "AC Metal Enclosed Switchgear and Control Equipment", DL404 "Technical Conditions for Ordering Indoor AC High Voltage Switchgear", etc.