The Siemens SENTRON 3VA2010-5HN32-0BC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current, built around the ETU350 electronic trip unit. It carries an interrupting capacity of 187 kA at 240 V, 121 kA at 415/440 V, 79 kA at 500 V, and 3.4 kA at 690 V — so the SCCR headroom at typical 400 V distribution levels is generous for most industrial panel designs.
Thermal derating and panel fit
The breaker holds its full 100 A rating from 40 °C through 50 °C ambient. Above that it derates linearly: 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. If your enclosure runs hot — say next to a VFD or transformer — factor that curve into the load schedule rather than oversizing the frame. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint that fits SENTRON panel-mounting hardware and busbar systems without re-drilling.
Feature set and release configuration
This variant ships with an undervoltage release (UVR) fitted — the supplied basic switch is 3VA2010-5HN32-0AA0 and the integrated auxiliary trip is 3VA9608-0BB11. Two auxiliary switches (HQ type) are included for status feedback. No voltage trigger, no phase-failure detection, no ground-fault monitoring, and no communication function; it's a straight line-protection breaker with UVR for safety circuits that need to drop out on loss of control voltage. Rated insulation voltage is 800 V, and maximum power loss is 16 W — useful for thermal budgeting in sealed enclosures. Latching endurance is rated at 20,000 operations. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.