MCCB for panel builders — 100 A, 4-pole, high interrupt capacity
The Siemens SENTRON 3VA2110-6HM42-0AA0 is a molded case circuit breaker (MCCB) designed for line protection in industrial power distribution panels. It carries a rated continuous current of 100 A across the full ambient temperature range from 40 °C up to 70 °C, so no derating is needed for warm enclosures — a practical advantage when the breaker sits near other heat sources on the DIN rail. This is a 4-pole unit, meaning it switches all three phases plus neutral. The interrupting ratings are substantial: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA figure at 240 V tells you it's sized for high-fault locations — think large transformer secondaries or service-entrance positions where available fault current is high. Ground-fault monitoring is built in via summation current formation on L + N conductors, so it can detect leakage without an external GFCI module. No undervoltage release, no communication function, and no trip indicator on this variant — it's a straightforward thermal-magnetic line protection breaker.
Panel fit and dimensions
The breaker measures 140 mm wide, 181 mm high, and 86 mm deep. That 86 mm depth is the dimension that matters most for shallow enclosures — check your panel depth before committing the cutout. The 140 mm width is standard for a 4-pole MCCB in this frame size; it will fit the same DIN-rail footprint as other SENTRON 3VA2 breakers of the same pole count.
What the ratings mean for your application
The 100 A continuous rating is flat from 40 °C to 70 °C ambient. Insulation voltage is rated at 800 V. Breaking capacity drops sharply at 690 V to 3.7 kA — this is not the breaker for a 690 V motor control center unless the available fault current at that voltage is verified to be under that value. At 415 V and below, however, the 187 kA and 242 kA figures give you selectivity headroom for series-rated systems.