The Siemens SENTRON 3VA2163-5MN32-0DC0 is a 3-pole molded case circuit breaker (MCCB) designed specifically for motor protection, rated at 63 A across the full 40 °C to 70 °C ambient range — no derating needed up to that ceiling. Its interrupting capacity hits 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 — the 415 V figure is the one most plant engineers will use for coordination studies on 400 V class systems.
Motor protection features and panel fit
This MCCB includes phase failure detection — a critical feature for motor loads where a lost phase can single-phase a winding before the overload relay notices. Maximum power loss is 6.5 W, which keeps thermal rise manageable in a sealed enclosure; operating range spans -25 °C to 70 °C, storage from -40 °C to 80 °C.