What this MCCB carries — and what it's for
The Siemens 3VA2225-7HL32-0CC0 is a SENTRON molded case circuit breaker (MCCB) sized for line protection, rated 250 A continuous current across a 3-pole configuration. Breaking capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V — meaning it clears high-fault scenarios on the distribution side without requiring an upstream fuse. This variant ships with an undervoltage release (UVR) and two auxiliary switches HQ, so it drops the load if control voltage collapses — useful for safety circuits or sequenced startups where a loss-of-voltage condition must trip the breaker.
Derating and thermal headroom
Continuous current holds at 250 A up to 50 °C ambient, then derates linearly: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, 213 A at 70 °C. If your panel ambient runs hot — say, near a drive cluster or transformer — the 55 °C figure is the one to budget against, not the 250 A nameplate. Maximum power loss is 50.5 W; factor that into enclosure ventilation if the panel is sealed or high-density.
Footprint and panel fit
Dimensions are 105 mm wide × 181 mm high × 86 mm deep. The 105 mm width is a standard 3-pole MCCB footprint for this current class — it fits existing SENTRON busbars and mounting plates without re-drilling. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage limit governs handling and warehousing, not running duty.