SENTRON 3VA2225-6HL32-0DC0 — 250 A MCCB with Undervoltage Release
Rated 250 A through 50 °C without derating; above that, the continuous current tapers to 213 A at 70 °C — a thermal curve worth checking if the breaker sits in a warm enclosure or near other heat sources.
Interrupting Capacity and Application Context
At 240 V the breaker clears 242 kA; at 415 V and 440 V it holds 187 kA, dropping to 121 kA at 500 V and 4.5 kA at 690 V. That 242 kA figure at 240 V makes it suitable for high-fault locations like transformer secondaries or large motor control centers where available fault current exceeds typical MCCB ratings. The 3-pole construction and 250 A frame cover motor loads, feeder circuits, and main disconnect duties in 400 V class systems. The included undervoltage release (UVR) and two auxiliary switches HQ allow remote trip indication and undervoltage protection without an external relay.
Mounting and Panel Fit
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard MCCB footprint that fits most DIN-rail or panel-mount enclosures. The depth of 86 mm (3.39 in) leaves room for rear-access wiring in shallow backboxes. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Power loss at full load is 50.5 W — factor that into enclosure ventilation if the breaker is grouped with others.