The Siemens SENTRON 3VA2163-5MN36-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across its full ambient temperature range from -25 °C to 70 °C — no derating needed up to that ceiling. It is specifically designed for motor protection, with integrated phase failure detection and a trip indicator, so it catches a lost phase before the winding overheats. The interrupting ratings are substantial: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
Motor protection specifics
The base switch is order code 3VA21635MN360AA0. Power loss is 4 W maximum — negligible for panel thermal budgeting. This is a straight motor-protection breaker: phase failure detection and thermal-magnetic trip, nothing more. For a motor branch circuit that is exactly what you want — fewer failure points.
Dimensions: 181 mm height, 105 mm width, 86 mm depth.