The Siemens SENTRON 3VA2163-7MN32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated 63 A at 40 °C, designed specifically for motor protection. It includes an integrated undervoltage release (UVR) and phase failure detection, making it a self-contained protective device for a motor branch circuit — no need to wire a separate undervoltage relay.
Breaking capacity and selectivity
Breaking capacity is 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. At 415 V, a 242 kA rating means this breaker can clear a fault up to that level without upstream devices needing to trip — essential for maintaining selectivity in a distribution panel where downstream faults must not take out the main.
Current rating across temperature
The 63 A rating holds from 40 °C through 70 °C ambient — no derating required up to the maximum operating temperature. That simplifies panel design in warm enclosures; you don't need to oversize the breaker for a 55 °C switchroom.
Dimensions and integration
Footprint is 105 mm wide, 181 mm high, 86 mm deep. Mounts on a standard DIN rail or panel-mount plate. The width — 105 mm — is the critical dimension for a multi-breaker lineup; verify your backpanel layout fits the 3-pole width.