Siemens SENTRON 3VA1225-6EE32-0AA0 — 250 A MCCB, TM220 Release
The Siemens SENTRON 3VA1225-6EE32-0AA0 is a 3-pole molded case circuit breaker (MCCB) with a TM220 thermal-magnetic overcurrent release, sized for line protection in distribution panels and switchgear. Rated 250 A continuously at 40 °C, it holds that full rating through 50 °C and derates to 223 A at 70 °C — useful when the breaker sits near other heat sources in a sealed enclosure. Breaking capacity is 220 kA at 240 V AC, dropping to 154 kA at 415 V and 17 kA at 690 V — the high interrupt rating at low voltage suits it for transformer-secondary or large-bus applications where available fault current is high.
Dimensions and Panel Fit
At 105 mm wide × 158 mm tall × 70 mm deep, this breaker occupies a standard 3-pole MCCB footprint on a DIN rail or panel-mount base. The IP40 front face keeps dust out of the enclosure; the back and sides are open for heat shedding into the cabinet air.