What this 100 A SENTRON MCCB delivers
The Siemens SENTRON 3VA2110-5JQ42-0AA0 is a 4-pole molded case circuit breaker rated for continuous 100 A across the full ambient range from 40 °C to 70 °C — no derating curve to chase, which simplifies panel schedules in warm enclosures. It carries the ETU560 electronic trip unit, configurable for line protection, with an adjustable N-conductor protection setting (OFF, 20 % to 160 %). The interrupting capacity hits 187 kA at 240 V AC and 121 kA at 415 V and 440 V AC, so it handles high-fault utility feeds without cascading upstream breakers. Rated insulation voltage is 800 V, operating voltage up to 690 V AC.
Sizing and coordination for panel builders
At 140 mm wide × 181 mm tall × 86 mm deep, this breaker fits standard SENTRON 3VA panel cutouts and bus-bar layouts. The IP40 front protection means it is suited for enclosed distribution boards — not open-panel washdown zones. Communication function is built in, so it can integrate with energy management or remote-trip monitoring systems without an add-on module. Maximum power loss is 10 W, a modest figure for a 100 A frame that keeps enclosure heat rise manageable.