The Schneider Electric EZC630N3630N is an EasyPact EZC630N molded case circuit breaker (MCCB) rated 630 A at 40 °C, with the TM-D thermal-magnetic trip unit rated 630 A at 50 °C. The 36 kA Icu at 440 V AC (40 kA at 220/230 V) is the interrupting capacity: it can safely clear a fault up to that level without welding contacts or rupturing the case. Below that, it still interrupts; above it, the upstream device needs to clear the fault first. The magnetic trip is fixed at 5000 A — that's the instantaneous pickup for short-circuit protection, not adjustable on the TM-D unit. The breaker is Category A (no intentional short-time delay), meaning it's intended for distribution where selectivity is achieved by current magnitude and impedance, not by time grading.
Deployment context
Fixed-mount, backplate installation — no DIN-rail adapter on this frame. Front-front connection (line and load both front-accessible) makes it straightforward for panel builders: bus bars or cable lugs land on the same face. The 45 mm pole pitch matches standard busbar spacing for 3-pole MCCBs in distribution boards. IP20 finger-safe terminals; IK07 impact resistance means it handles incidental tool strikes during panel assembly. No earth-leakage protection built in; if you need ground-fault on this feeder, add an external Vigi module or upstream RCD.