MCCB with 250 A continuous rating and 330 kA interrupting capacity
The Siemens SENTRON 3VA2225-7HN32-0JC0 is a 3-pole molded case circuit breaker rated for 250 A continuous current (Iu) and delivers a 330 kA breaking capacity at 240 V — enough to handle high-fault utility feeds and large transformer secondaries without cascading upstream devices. It carries an ETU350 electronic trip unit (line protection version), so you get adjustable long-time, short-time, and instantaneous protection curves rather than fixed thermal-magnetic response — useful for coordinating with downstream feeders and motor starters in a selective-coordination study.
Breaking capacity across voltages — where the 330 kA matters
At 415 V and 440 V the interrupting rating holds at 242 kA, dropping to 187 kA at 500 V and 6.3 kA at 690 V.