1SYS273012R0011

The ABB SB203M-D1 Miniature Circuit Breaker (MCB), order code 1SYS273012R0011, is a three-pole electrical protection device rated at 1 A, featuring a D-type tripping characteristic and a rated short-circuit breaking capacity of 10 kA. It is designed to protect compatible electrical circuits against overloads and short circuits. Its thermal tripping mechanism provides overload protection, while its electromagnetic mechanism responds to short-circuit conditions. The D-curve characteristic is intended for circuits with specific starting-current requirements, subject to correct circuit design and protection coordination. Part of ABB's System pro M compact SB200M series, it is suitable for compatible residential, commercial and industrial electrical installations and complies with IS/IEC 60898-1.