The Siemens 3VA2325-5MN32-0CH0 is a SENTRON molded case circuit breaker (MCCB) sized for motor protection duty. It carries a full 250 A continuously from 40 °C through 70 °C ambient — no derating curve to chase across the panel temperature range. The 3-pole design includes phase failure detection and an undervoltage release (UVR) as standard, so it drops the motor on a lost phase or sagging control voltage without an external relay. Interrupting capacity is 187 kA at 240 V, tapering to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. That 187 kA at 240 V handles high-fault utility feeds or transformer secondaries; the 7.5 kA at 690 V still clears a fault on a 690 V drive bus. Trip time is adjustable between 4 s and 17 s, matching motor start profiles without nuisance trips. Physical footprint: 248 mm high, 138 mm wide, 110 mm deep. The 138 mm width is a standard 3-pole MCCB form factor for panel layouts — fits the same cutout as other SENTRON 3VA2 frames. Power loss runs to 40 W maximum, so factor that into enclosure thermal calculations if the panel is densely packed.
Mounts in a standard panel enclosure — the 138 mm width and 248 mm height fit a typical MCCB cutout. The undervoltage release (UVR) is built in, so no separate coil or monitoring relay is needed for undervoltage protection. Phase failure detection is integrated; no external phase-loss module required. The trip indicator gives a local visual of the breaker state without opening the door.