The SENTRON 5SQ2370-0KA13 is a 3-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 13 A at 400 V AC, 50 Hz. It breaks fault currents up to 3 kA per EN 60898 — enough for most residential and light commercial final circuits, but not for high-fault industrial mains. The C-curve means it trips between 5× and 10× rated current, so it handles motor inrush and transformer energisation without nuisance tripping on standard lighting or receptacle loads.
Mounting and integration
Occupies 3 width units on a DIN rail. Installation depth is 55 mm — fits standard distribution boards and sub-panels without bottoming out on the enclosure door. No neutral conductor switching (the 3-pole version handles line-only). IP20 finger-safe terminals suit enclosed panels; not rated for washdown or outdoor exposure.