Siemens SENTRON 3VA1163-3EF32-0CA0 — MCCB with Undervoltage Release
The Siemens SENTRON 3VA1163-3EF32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous at 40 °C, with a TM240 thermal-magnetic overcurrent release and an integrated undervoltage release (UVR). The interrupting ratings span the common industrial voltage tiers: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V.
TM240 overcurrent release: thermal element calibrated for 63 A frame, magnetic pickup at 240 A. Maximum power loss is 19.8 W per pole at rated current — about 60 W total for the 3-pole assembly. That's moderate for a 63 A MCCB; factor it into your enclosure thermal rise calculation if you're grouping multiple breakers in a sealed panel. Storage: -40 °C to +80 °C.
