100 A MCCB with sustained interrupting capacity across the voltage range
The Siemens SENTRON 3VA2010-8HM36-0AA0 is a 3-pole molded case circuit breaker rated 100 A continuous, designed for line protection in distribution panels. It carries a full interrupting rating of 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — so the same breaker covers low- and medium-voltage fault levels without a frame-size jump. Rated insulation voltage is 800 V, and the breaker holds its 100 A rating across the full operating temperature range from 40 °C to 70 °C with no derating, which simplifies panel design in warm enclosures or near other heat sources.
What the ratings mean for panel integration
The 100 A frame is sized for main or large-feeder protection in a SENTRON distribution board. With a maximum power loss of 7.7 W, it adds minimal heat to the enclosure — no forced cooling needed in a standard ventilated panel. Dimensions are 86 mm deep, 105 mm wide, and 181 mm tall, which fits the standard SENTRON mounting footprint. The ground-fault monitoring variant uses summation current sensing on the L-conductor, so it detects leakage without an external core-balance transformer.
Selectivity and coordination note
For a site electrical engineer working through a coordination study: the 3VA2010-8HM36-0AA0's interrupting curve starts at 150 A minimum and reaches 1 200 A maximum, which gives a wide band for selective coordination with downstream 20 A or 63 A MCCBs. The 440 kA SCCR at 240 V means it can sit ahead of a transformer feeding a 480 V panel and still clear a bolted fault without upstream breaker trip — provided the let-through energy is coordinated per IEC 60947-2. No undervoltage release or shunt trip is fitted on this variant, so remote tripping requires an external accessory.