1SYS273022R0041

The ABB SB203M I-D4 is a three-pole, 4 A miniature circuit breaker (MCB) designed to protect compatible low-voltage electrical circuits against overloads and short circuits. It features a D-type tripping characteristic, suitable for applications with high inrush currents when the circuit and equipment requirements are compatible. Its compact modular construction supports DIN-rail installation in electrical distribution boards, switchboards and industrial control panels.