The Siemens 3VM1463-4GD42-0AA0 is a SENTRON molded case circuit breaker (MCCB) built for line protection in distribution panels. Four poles, rated 630 A continuous at 40 °C, with the TM210 thermal-magnetic overcurrent release handling both overload and short-circuit trip curves. The interrupting ratings speak to its fault-clearing capacity: 121 kA at 240 V AC, 76 kA at 415 V and 440 V, and 53 kA at 500 V — figures that determine whether this breaker holds its SCCR in a given fault-current study. Rated operational voltage is 690 V AC, with a DC rating of 500 V. Insulation voltage is 800 V. Front protection is IP40, suitable for enclosed panel mounting. The 184 mm width and 248 mm height fit the standard SENTRON 3VM frame footprint. Depth is 110 mm. Panel builders should verify the mounting cutout and bus-bar spacing against the existing switchgear layout — the 4-pole form factor is wider than a 3-pole equivalent, and the TM210 release occupies the same physical envelope as other 3VM releases.
Ratings and what they mean for fit
Maximum power loss is 193 W at rated current. That is the heat the breaker dumps into the enclosure — relevant for thermal management in a sealed cabinet. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.