What the ratings mean for fit
The 3VA2010-5HN36-0AG0 is a Siemens SENTRON 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C through 70 °C — no derating needed across that full ambient span, which simplifies panel sizing in warm enclosures. Its interrupting rating hits 187 kA at 240 V AC, 121 kA at 415/440 V, and 75.6 kA at 500 V, so it handles high-fault-capacity service entrance or distribution points without cascading upstream. At 690 V the rating drops to 3 kA, meaning this breaker is not intended for 690 V line protection at full fault levels. Rated insulation voltage is 800 V, and the breaker is designed for line protection — not motor or generator protection. It carries one auxiliary switch and one trip alarm switch (HP type), giving you both a remote status contact and a separate alarm on trip. The basic switch assembly is order code 3VA20105HN360AA0, which is the switching mechanism inside this frame.
Panel integration and mounting
Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — fits standard MCCB panel cutouts and busbar centers. The 3-pole block occupies roughly 105 mm of DIN-rail or mounting-plate width. Power loss is 13.5 W maximum at rated current, so adjacent devices need reasonable air gap or the panel's thermal budget accounts for that dissipation. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. No undervoltage release, no ground-fault monitoring, no communication function — this is a straight line-protection breaker with a mechanical trip indicator.