630 A, 4-pole line protection — what the ratings mean
The Siemens 3VA1463-6EE42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated 630 A at 40 °C, with a TM220 thermal-magnetic release — that means the trip curve is fixed at 220 A for the magnetic element, so it coordinates with downstream branch breakers sized up to that instantaneous threshold. The 4-pole design suits three-phase-plus-neutral or three-phase with a switched neutral, common in North American and European panel builds. Interrupting capacity is the headline number here: 220 kA at 240 V drops to 154 kA at 415 V and 121 kA at 500 V. At 690 V it still holds 17 kA. That SCCR headroom means this breaker can sit upstream of a transformer or a motor control center without needing a current-limiting fuse ahead of it — the breaker clears faults up to those levels on its own. Thermal derating is published stepwise: full 630 A through 50 °C, then 618 A at 55 °C, 607 A at 60 °C, 595 A at 65 °C, and 583 A at 70 °C. For a panel running warm — say 55 °C ambient inside the enclosure — you lose about 12 A, so size the load at 618 A continuous, not 630.
Panel fit and integration
Dimensions: 248 mm high, 184 mm wide, 110 mm deep. That 110 mm depth is the key clearance number for a shallow backpan — verify the gland plate or door clearance if the breaker mounts near the enclosure door. IP40 on the front means it's protected against tools and solid objects >1 mm, but not against water ingress; keep it inside a rated enclosure. No undervoltage release, no communication module, no ground-fault monitoring — this is a straight line-protection MCCB. If you need shunt trip or aux contacts, those are add-on accessories, not internal.