MCCB 회로 차단기 CSDM7-250H-4300 CSDM7-250-4300 4P 250A 250a의 MCCB 산업용 회로 차단기 열 및 자기 회로 차단기

Designed for commercial-industrial mixed scenarios (factory workshops with power equipment + office lighting, commercial complexes with three-phase main units + single-phase sockets), the 50KA high breaking capacity can cut off severe short-circuit current. The 4P full-pole design enables synchronous on-off and independent monitoring of three live wires + neutral wire, avoiding neutral wire overload ablation and single-phase circuit faults affecting the three-phase system, thus solving the problem of “protection blind spots in mixed circuits”.

250A wide-range current carrying, unified protection for multiple loads.Adopting multi-strand copper core conductive columns + large-area heat dissipation structure, the 250A rated current can simultaneously carry multiple types of loads such as 110KW workshop motors, office lighting circuits, and air conditioning systems. There is no need to set up multiple circuit breakers separately, which simplifies the distribution cabinet layout and reduces the complexity and cost of the power distribution system.

“Intelligent Adaptation” of thermal-magnetic dual tripping, No False Tripping & No Refusal to Trip,The thermal trip adopts progressive action of bimetallic strips (adapting to slow overload of resistive loads such as lighting and sockets), while the magnetic trip realizes instantaneous response through electromagnetic coils (dealing with instantaneous large currents such as motor startup and equipment short circuit). It not only avoids “false tripping” during power equipment startup but also quickly cuts off real short-circuit faults, adapting to the complex current characteristics of mixed loads.