The Siemens SENTRON 3VA2010-5KP32-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. The interrupting ratings are the headline: 187 kA at 240 V AC, 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 tells you this breaker can handle a high-fault utility feed or a transformer secondary without cascading upstream — it's sized for high-available-fault installations where a standard 65 kA or 100 kA MCCB would need a current-limiting fuse ahead of it.
The 100 A continuous rating is flat from 40 °C to 70 °C — no thermal derating curve to calculate, which simplifies panel heat-rise calculations. The insulation voltage is rated 800 V, so the breaker can be used in 480 V and 600 V class systems with margin. The 3-pole configuration handles three-phase feeds. Communication function is built in, meaning it can report status or be integrated into a monitoring system — useful for a facility that tracks breaker trips or load profiles. Maximum power loss is 13.5 W, which is moderate for a 100 A frame; factor that into your enclosure ventilation if you're stacking several breakers.
The breaker measures 181 mm high, 105 mm wide, and 86 mm deep. The 105 mm width is the 3-pole frame width; if you're replacing a different brand's 3-pole MCCB, check that the mounting centers and bus-bar spacing match. The unit is designed for screw-mounting on a backplate or DIN-rail adapter (not included). The operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C — fine for unheated warehouses or outdoor enclosures in moderate climates.