The Schneider Electric EZC630N44600N is a 4-pole EasyPact EZC630N molded case circuit breaker rated 630 A at 40 °C, with a TM-D thermal-magnetic trip unit. Its 36 kA Icu at 440 V AC (50/60 Hz) per IEC 60947-2 means it can safely interrupt fault currents up to that level on a 400 V distribution bus without upstream coordination failure — the spec that decides whether this breaker clears a bolted fault or lets it cascade. The N breaking capacity code positions it for commercial and light industrial distribution panels, not heavy industrial high-fault locations.
Magnetic tripping current is 5000 A, so the instantaneous trip threshold is set at roughly 8× In — typical for thermal-magnetic MCCBs protecting distribution feeders against bolted faults while riding through motor inrush. The 36 kA Icu at 440 V AC is the maximum interrupting rating; at 400/415 V it holds at 36 kA, and at 220/230 V it rises to 40 kA. Electrical durability is 3000 cycles at 415 V AC in Category A (non-frequent switching). Mechanical durability is 10,000 cycles. For a distribution MCCB that sees occasional switching, this is adequate; for frequent load-break duty, a contactor should handle the switching cycles. If selectivity is required, a Category B breaker (with intentional delay) is needed upstream.
Fixed mounting on a backplate, with front-front connections (line and load both front-accessible). Dimensions are 255 mm high × 140 mm wide × 140 mm deep. IP20 finger-safe protection on the front cover; IK07 impact resistance.