The Siemens SENTRON 3VA2163-7MS36-0AF0 is a 3-pole molded case circuit breaker (MCCB) designed for starter protection, carrying a full-load current rating of 63 A across the entire 40 °C to 70 °C ambient range — no derating needed at elevated panel temperatures. Its interrupting capacity hits 242 kA at 415 V, which puts it in the high-fault class for industrial distribution: it clears a bolted fault upstream of a motor starter without the arc flash energy cascading to downstream contactors. The breaker ships with a factory-fitted 1 auxiliary switch plus 1 trip alarm switch HQ, so the panel builder gets both a position feedback contact and a separate fault-indicating contact without ordering add-on modules.
Breaking capacity across voltages
The 3VA2163-7MS36-0AF0 delivers 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That steep drop at 690 V is the key constraint: on a 690 V line (common in mining or marine installations), the 3.7 kA rating limits the available fault current the breaker can safely interrupt — coordination studies must respect that ceiling.