630 A MCCB with TM220 release — what the ratings mean for panel fit
The Siemens 3VM1463-5EE32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for line-protection duty, carrying a continuous current of 630 A at 40 °C through its three poles. That 630 A holds flat through 50 °C — no derating needed in a typical 40 °C panel — and only begins to taper at 55 °C (618 A) down to 583 A at 70 °C, so it handles warm enclosures without a frame-size jump. The TM220 thermal-magnetic release means fixed thermal and magnetic trip settings; no adjustment dials, which simplifies specification and avoids field misconfiguration. The interrupting ratings are the headline: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, and 76 kA at 500 V. Those numbers tell you this breaker can be applied upstream in high-fault-capacity installations — think large transformer secondaries or industrial service entrances — without needing a current-limiting fuse ahead of it. The 690 V AC rated operating voltage and 800 V rated insulation voltage confirm it is built for 400/480 V class systems with headroom. At 193 W maximum power loss, the thermal load on the enclosure is modest for a 630 A frame; ventilation planning should still account for it in a sealed IP40-front panel. The front face carries IP40 protection — suitable for general indoor switchgear, not washdown environments.
Integration — panel footprint and wiring
The 3VM1463-5EE32-0AA0 measures 138 mm wide, 248 mm tall, and 110 mm deep — a standard 3-pole MCCB footprint for the 630 A frame class. It mounts directly to a backplate or DIN rail via the SENTRON mounting base; no special adapter plate needed. The 110 mm depth (4.33 in) leaves clearance for rear-connected busbars or cable ladders in a typical 600 mm deep enclosure.