The Siemens SENTRON 3VA2110-5HM42-0AA0 is a 4-pole molded case circuit breaker rated for 100 A continuous current with an adjustable thermal-magnetic trip unit covering 150 A to 1 200 A. It's built for line protection in distribution panels and switchboards, carrying a 187 kA interrupting rating at 240 V and 121 kA at 415 V — enough headroom for high-fault utility feeds or transformer secondaries.
SCCR and selectivity
The interrupting ratings drop as voltage rises: 121 kA at 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That steep curve at 690 V means this breaker is best applied on 400 V-class systems where its SCCR is highest. The 800 V rated insulation voltage confirms it can sit on a 690 V line, but the 3.7 kA limit at that voltage demands careful coordination upstream.
Thermal performance and ground-fault
The 100 A rating holds flat from 40 °C through 70 °C — no derating needed in a warm enclosure. The ground-fault monitoring uses summation current sensing on L + N, so it picks up leakage on the protected circuit without a separate sensor. Power loss maxes at 10 W, manageable in a crowded panel.