SENTRON 3VA2010-5HN36-0AB0 — 100 A MCCB for Line Protection
The Siemens SENTRON 3VA2010-5HN36-0AB0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C, meaning no derating needed in a warm panel — the same 100 A holds at 70 °C as at 40 °C. It is designed for line protection (cable/feeder protection), not motor or generator protection, so the trip curve is fixed for that duty. The interrupting ratings climb steeply: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — that 187 kA figure at 240 V covers high-fault utility feeds or transformer secondaries without needing a current-limiting fuse upstream.
SCCR and Selectivity Planning
For a panel designer coordinating with upstream breakers, the 3VA2010-5HN36-0AB0 delivers 121 kA at 415 V and 75.6 kA at 500 V — these are the numbers to use for IEC 60947-2 short-circuit coordination studies. The 3 kA at 690 V is a steep drop but still covers most 690 V distribution fault levels. The insulation voltage is rated 800 V, so the breaker is electrically suitable for 690 V systems despite the lower interrupting capacity at that voltage. The 13.5 W maximum power loss at rated current matters for thermal management in a sealed enclosure — that heat must be dissipated.
Physical Fit and Accessories
Dimensions: 181 mm high, 105 mm wide, 86 mm deep — this is a standard SENTRON 3VA2 frame size. The breaker ships with 2 auxiliary switches (HP type) pre-installed, and the basic switch assembly is order code 3VA20105HN360AA0. No undervoltage release, no ground-fault monitoring, no communication function, no voltage trip — this is a plain line-protection breaker with auxiliary contacts for status feedback to a PLC or panel lamp. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.