ABB Vacuum Circuit Breakers (VCB)

Jiahong supplies ABB VD4 vacuum circuit breakers for medium-voltage switchgear, feeder switching, and power distribution in substations and industrial facilities.

For VD4 (CX) and VD4 (HE) requirements, the electrical ratings must match the application, while the mechanical interface must suit the intended switchgear. For retrofit projects, the existing panel model and breaker nameplate are the best starting points for checking compatibility.