The Siemens SENTRON 3VA2010-8HL32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, built around the ETU320 electronic trip unit. It is designed for line protection in distribution panels.
Breaking capacity and selectivity
The interrupting rating climbs as voltage drops: 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. That curve tells you this breaker is sized for high-available-fault-current panels — think main or feeder positions where upstream coordination demands a high SCCR. The 800 V rated insulation voltage supports use in 480/277 V and 600 V systems with margin.
Thermal derating and operating range
The continuous current rating holds at 100 A across the full ambient range from 40 °C to 70 °C (–). That is a flat derating curve — no need to downrate for elevated panel temperatures up to 70 °C, which simplifies panel design in compact enclosures. Operating temperature spans -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep (–). That is a standard 3-pole MCCB footprint for DIN-rail or panel-mount installation. The front face carries IP40 protection, meaning tools and fingers are kept out but the unit is not sealed against water — mount it inside a rated enclosure for wet environments. Power loss at rated current is 7.7 W, negligible for thermal budgeting in a typical distribution board.