Siemens SENTRON 3VA2110-5JQ32-0KH0 — 100 A MCCB with 187 kA Interrupting Capacity
The Siemens SENTRON 3VA2110-5JQ32-0KH0 is a 3-pole molded case circuit breaker (MCCB) on a 100 A frame, designed for line protection in distribution panels and industrial switchboards. Its headline interrupting rating of 187 kA at 240 V AC means it can safely clear a bolted fault at that level without rupturing — critical for high-fault installations close to the transformer secondary. At 415 V and 440 V the rating holds at 121 kA, dropping to 75.6 kA at 500 V and 3.7 kA at 690 V, which covers the common low-voltage industrial range. Continuous current rating is a flat 100 A across the full ambient range from 40 °C to 70 °C — no derating curve to chase in a warm enclosure. That simplifies panel sizing: the breaker delivers its nameplate 100 A even when the cabinet is running hot. Physical footprint is 86 mm deep by 105 mm wide by 181 mm tall, a standard SENTRON 3VA form factor that fits the same panel cutouts and busbar risers as other 100 A frames in the series. The unit includes a communication function for integration into a higher-level monitoring system, plus a shunt trip release (STL) and a complement of 2 auxiliary switches and 1 trip alarm switch (HQ) for remote status indication.
Sourcing and Lifecycle
Maximum power loss is 10 W, which is modest for a 100 A frame and keeps internal cabinet heating manageable. Storage temperature range spans -40 °C to 80 °C; operating ambient is -25 °C to 70 °C.