The Siemens SENTRON 3VA2010-5HN36-0AH0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across its full operating temperature range from -25 °C to 70 °C, with no derating needed even at 70 °C. It's built for line protection in distribution panels, and the interrupting ratings are hefty: 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 kind of interrupting capacity means it can handle high-fault scenarios without upstream coordination headaches — useful when you've got a transformer or a big motor starter feeding a subpanel.
The 100 A continuous rating is the breaker's thermal-magnetic trip setting — it'll carry 100 A all day in a 40 °C panel, and the datasheet says it holds that same 100 A all the way up to 70 °C ambient. That's a solid thermal margin; you don't have to oversize for hot enclosures. At 690 V the interrupting drops to 3 kA, so if your line runs at that voltage, you'll need to check coordination with upstream fuses or a larger breaker.