What this MCCB carries — and where it fits
The Siemens SENTRON 3VA1110-4ED32-0AA0 is a 3-pole molded case circuit breaker rated for 100 A continuous at 40 °C, with a TM210 thermal-magnetic release tuned for line protection. Its 121 kA interrupting capacity at 240 V gives it headroom for high-fault panels — think main breaker duty or feeder protection where SCCR demands are stiff. The 70 mm depth and 76.2 mm width keep it within the standard 3VA footprint, so it swaps into existing SENTRON panels without re-drilling the mounting plate.
Breaking capacity across the voltage curve
This breaker delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 11.9 kA floor at 690 V is the number to watch for 480/600 V industrial services — it still clears a substantial fault without cascading upstream.
Thermal derating — what the 100 A rating actually means
The 100 A rating holds from 40 °C through 50 °C. At 55 °C it derates to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A. If your panel ambient runs hot, size the upstream conductor for the derated figure, not the nameplate.