The SENTRON 3VA2325-0KQ32-0AA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current, built around the ETU860 electronic trip unit with ground-fault monitoring via summation current formation on the L-conductor. It is designed for line protection in main or feeder distribution panels, with a breaking capacity of 440 kA at 415 V and 187 kA at 690 V — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream. The 110 mm depth, 138 mm width, and 248 mm height fit standard SENTRON 3VA2 panel cutouts, so it retrofits into existing 3VA2-based switchboards without re-drilling or busbar rework.
Continuous current holds at 250 A across the full ambient range from 40 °C to 70 °C — no derating needed for elevated panel temperatures typical of enclosed switchgear. The ETU860 trip unit allows adjustable N-conductor protection from OFF through 20 % to 160 % of the rated current, giving flexibility for 4-wire systems with unbalanced neutral loads. Breaking capacity at 415 V is 440 kA, which covers most industrial utility fault levels up to 400 V class; at 690 V it drops to 187 kA, still adequate for 690 V distribution in mining or marine installations. Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C.