What this MCCB carries and why it matters
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. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V, so it handles high-fault utility feeds or transformer secondaries without cascading upstream. The breaker is designed for line protection and includes an undervoltage release (UVR) and two auxiliary switches HQ, which is what the -0CC0 suffix signals — a UVR trips the breaker if control voltage drops, common in safety circuits or emergency-stop chains.
Panel fit and footprint
The breaker measures 138 mm wide, 248 mm tall, and 110 mm deep — a standard 3-pole MCCB footprint that fits most SENTRON distribution panels and switchboards. 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 242 kA at 240 V and 187 kA at 415 V give full-rated SCCR for most North American and European industrial feeds. 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.