The Siemens SENTRON 3VA2110-5KP32-0HH0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection. It carries a rated continuous current of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel loading calculations for a 100 A feeder or branch. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. Those numbers mean this breaker can safely interrupt very high fault currents on a 240 V or 415 V distribution bus — common in industrial switchgear where the available fault current is high. At 690 V the capacity drops sharply, so it is not a universal 690 V breaker; match the voltage to your system's available fault current.
Mounting and integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint for a 100 A frame. It bolts into a panel or mounts on a mounting plate; no DIN-rail clip on this size class. The 86 mm depth means it clears a typical 200 mm deep enclosure with room for wiring behind the breaker. Built-in auxiliary switch complement: 2 auxiliary switches plus 1 trip alarm switch (HQ). That gives you two NO/NC contacts for status feedback and a dedicated alarm contact that closes only on a trip event — useful for remote indication or PLC input without adding external relays. Also includes a shunt trip (STL) for remote opening via a control signal. Communication function is present on this variant, enabling integration with a higher-level monitoring system via a compatible communication module (not included).
Lifecycle and sourcing
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The 100 A rating holds across the entire operating range, so no thermal derating curve to apply in a warm panel — a real time-saver when laying out a crowded enclosure.