The SENTRON 3VA2325-6HN32-0CC0 is a 3-pole molded case circuit breaker rated for 250 A continuous current across the full 40 °C to 70 °C ambient range, meaning you don't have to derate for panel heat — it holds 250 A all the way up to 70 °C.
The 110 mm depth leaves room behind the gland plate for wiring and the UVR coil connections. Mounting is via the standard SENTRON base plate or DIN rail adapter; no special cutouts needed.
SCCR headroom and selectivity
At 690 V the interrupting capacity drops to 7.5 kA, so on 690 V systems this breaker is only suitable for low-fault locations or as a downstream device behind a current-limiting fuse or upstream breaker. The 250 A frame with 3 000 A maximum rating means the internal trip unit can be set anywhere from 250 A up to 3 000 A — the continuous rating is 250 A, but the breaker's frame can handle higher trip settings if you swap the electronic trip unit.
