The Siemens SENTRON 3VA1110-3EF32-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 100 A continuously at 40 °C ambient — that's the current it holds without tripping under normal conditions. At 240 V it interrupts faults up to 75.6 kA, meaning it clears a dead short without welding contacts or cascading upstream. The 800 V rated insulation voltage gives headroom for 480 V and 600 V class systems. A shunt trip (STL) auxiliary release is built in, so a remote signal or safety relay can force the breaker open — useful for emergency-off circuits or interlocked disconnects.
Breaking capacity across voltages
This MCCB's interrupting rating drops as system voltage rises: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V (–). For a 480 V panel, the 32 kA figure is the one that matters for SCCR compliance — if the available fault current at the panel exceeds that, you need a current-limiting upstream device or a higher-rated frame.
Thermal derating and panel fit
Rated current holds flat at 100 A from 40 °C up to 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C (–). If this breaker lives in a crowded enclosure running hot, plan for the lower figure — 91 A at 70 °C is the ceiling. The 70 mm depth, 76.2 mm width, and 130 mm height (–) fit standard SENTRON 3VA panel footprints; the 25 W max power loss means it sheds heat into the enclosure, so factor that into your thermal budget.