The Siemens SENTRON 3VA2325-6HN32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current across the full 40–70 °C ambient range, with no derating needed up to 70 °C. It carries an interrupting capacity of 242 kA at 240 V AC and 187 kA at 415/440 V, dropping to 7.5 kA at 690 V — numbers that define its fault-clearing headroom for low-voltage distribution.
The ETU350 electronic trip unit gives adjustable long-time, short-time, instantaneous, and ground-fault protection curves — a step up from fixed thermal-magnetic breakers in the same frame size. The 3VA2 frame (138 mm wide × 248 mm tall × 110 mm deep) fits standard Siemens switchboard and panelboard footprints; the 250 A continuous rating at 70 °C means no thermal derating in hot enclosures, a practical advantage over breakers that must be downsized above 40 °C.
Mounts on standard DIN rail or direct-panel via integrated mounting feet. 110 mm depth fits within typical 400 mm deep enclosures with clearance for rear-connected bus bars.