What the ratings mean for fit
The Siemens SENTRON 3VA2010-5HM42-0AA0 is a 4-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating required up to that ceiling. The interrupting ratings are what drive the panel coordination: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. These are the SCCR values the breaker can safely clear under fault without upstream cascading, so the 240 V and 415 V figures are the ones that govern for most North American and European distribution panels. The ETU330 electronic trip unit provides adjustable long-time, short-time, instantaneous, and ground-fault protection; the N-conductor protection is field-configurable to OFF, 50%, or 100% of the phase rating. Rated insulation voltage is 800 V, and the maximum operating voltage is 690 V AC. Power loss at rated current is 13.5 W maximum — relevant for thermal budgeting inside a sealed or tightly packed enclosure. The front face carries IP40 protection, so the breaker is suitable for general indoor panel installation where no water jets are present.
Integration and deployment context
The breaker measures 86 mm deep, 140 mm wide, and 181 mm high. The 4-pole footprint matches standard Siemens 3VA panel mounting; the 140 mm width is the same as the 3-pole variant's width plus one additional pole module. Ground-fault monitoring is implemented via summation current formation on the L + N conductors — a single core-balance CT approach that does not require a separate GFCI module.