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. 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. 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.
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. If you need shunt trip or aux contacts, those are add-on accessories, not internal.