630 A thermal-magnetic breaker, 36 kA at 440 V — panel fit and protection
The Schneider Electric EZC630N3600N is a 3-pole EasyPact EZC630N circuit breaker rated 630 A at 40 °C with a thermal-magnetic TM-D trip unit. Its 36 kA Icu at 440 V AC (50/60 Hz) per IEC 60947-2 means it can safely interrupt faults up to that level without cascading upstream — a key number for the site electrical engineer checking SCCR headroom and selectivity coordination. Mounts fixed to a backplate (not DIN rail), with front-front connections and a 45 mm pole pitch. The IP20 enclosure and IK07 impact rating suit it for enclosed panel installation where personnel access is controlled.
Trip unit and protection characteristics
The TM-D thermal-magnetic trip unit provides overload and short-circuit protection. Magnetic tripping current is 5000 A. Mechanical durability is 10000 cycles; electrical durability is 3000 cycles at 415 V AC. No earth-leakage or neutral protection built in.
