The Siemens SENTRON 3VA2116-5JQ32-0KL0 is a 3-pole molded case circuit breaker (MCCB) on a 160 A frame, designed for line protection in distribution panels and industrial switchboards. Its 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 3.7 kA at 690 V — that 187 kA figure means it can safely clear a bolted fault on a high-capacity 240 V transformer secondary without the arc flashing over or the case rupturing. Continuous current rating holds at 160 A across the full ambient range from 40 °C to 70 °C — no derating curve to chase for a warm panel. The breaker ships with a shunt trip release (STL) and a complement of auxiliary switches: 2 auxiliary switches plus 1 trip alarm and 1 electrical alarm switch (HQ configuration), which gives the panel builder status feedback without adding external relays.
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard MCCB footprint that drops into most SENTRON panelboards and distribution blocks without re-drilling the mounting plate. Maximum power dissipation is 25.5 W, so the thermal load on the enclosure is modest; operating range is -25 °C to 70 °C, storage from -40 °C to 80 °C. The breaker includes a communication function for remote monitoring and trip-event logging; the basic switch is the 3VA21165JQ320AA0 variant.