What this MCCB delivers for the panel
The Siemens SENTRON 3VA1112-5EF32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for 125 A continuous at 40 °C, with a thermal derating curve that holds 125 A up to 50 °C, then steps down to 114 A at 70 °C — useful when the breaker shares a warm enclosure with other heat sources. Interrupting capacity is 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V, so it handles high-fault scenarios common in industrial switchboards without cascading upstream. Rated insulation voltage is 800 V. It ships with an undervoltage release (UVR) and two auxiliary switches (HQ design), making it ready for remote status monitoring and undervoltage protection without additional add-on modules.
Dimensions and panel fit
At 70 mm deep, 76.2 mm wide, and 130 mm tall, the breaker fits standard SENTRON 3VA panel cutouts and leaves room for side-by-side mounting in a distribution board.