The Siemens SENTRON 3VA2110-7HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It's built for line protection duty, meaning it sits at the feeder or main distribution point, not downstream on a motor branch. That matters when you need coordination selectivity downstream — you can shape the trip characteristic to hold in through a motor start or a transformer inrush. Breaking capacity runs 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and drops to 3.7 kA at 690 V.
Panel fit and footprint
The 86 mm depth leaves room for rear busbar connections or a gland plate behind the panel door.