The Siemens SENTRON 3VA2463-6HN32-0AC0 is a 3-pole molded case circuit breaker rated for 630 A continuous current, with an ETU350 electronic trip unit. Its interrupting capacity reaches 242 kA at 240 V and 187 kA at 415 V, so it handles high-fault scenarios typical of large industrial feeders or transformer secondaries without needing an upstream current-limiting fuse.
Thermal derating and trip unit
The 630 A rating holds at 40 °C ambient; at 70 °C it derates to 520 A. The ETU350 electronic trip gives adjustable long-time, short-time, instantaneous, and ground-fault protection curves, so you can coordinate selectivity downstream without swapping trip units.
Mounting and panel fit
Dimensions are 248 mm high, 138 mm wide, 110 mm deep. The IP40 front protection means it's suited for enclosed panel mounting where front-face splash isn't expected. Two auxiliary switches (HQ type) are built in for status feedback to the PLC or annunciator.