MCCB circuit breaker CSDM7-250L-3300 CSDM7-250-3300 3P 250A 250a mccb industrial circuit breaker thermal and magnetic circuit breaker

For medium-risk scenarios with short-circuit current ≤ 36KA (e.g., small-to-medium factory workshops, regional commercial power stations), there is no need to invest in high-cost high-breaking models. The precise 36KA breaking capacity covers conventional short-circuit faults, avoiding waste from "excessive performance" while ensuring reliable circuit interruption during faults, balancing protection effect and procurement cost.

3P independent three-phase monitoring: preventing "phase deviation" in power circuits.It realizes independent sampling and synchronous tripping of three-phase currents, accurately identifying faults such as unbalanced three-phase loads, phase loss, and single-phase short circuits. Especially suitable for power equipment sensitive to three-phase balance (e.g., machine tools, fans, water pumps), it prevents motor winding burnout and abnormal equipment operation caused by "phase deviation", extending the service life of power equipment.

Lightweight structure + easy operation: adapted to diverse installations.Adopting a compact molded case design (15% smaller in volume than products of the same specification), it saves internal space of distribution cabinets. It supports "snap-on" quick wiring (wiring positions are equipped with anti-loosening latches to eliminate poor contact). Fixed installation is compatible with both standard 35mm DIN rails and bolt fixing, allowing construction personnel to quickly complete installation and commissioning without professional tools.