What this MCCB delivers
The Siemens SENTRON 3VA2463-6JP32-0AA0 is a 3-pole molded case circuit breaker rated 630 A at 40 °C, with an ETU550 electronic trip unit. Its interrupting capacity hits 242 kA at 240 V AC and 187 kA at 415 V AC — enough headroom for high-fault utility feeds or transformer secondaries where upstream coordination demands a stiff breaker. The ETU550 provides adjustable long-time, short-time, instantaneous, and ground-fault protection (N-conductor protection adjustable OFF; 20% to 160%). Communication function is built in, so it can report trip events and load data to a higher-level system without an add-on module.
Rating breakdown and what it means for your panel
At 40 °C ambient the breaker carries 630 A continuously. Derate linearly as the panel warms: 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. If your enclosure runs hot — say a packed switchboard near a furnace line — the 70 °C figure tells you the breaker still holds 450 A without nuisance tripping. Interrupting capacity drops with system voltage: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. At 690 V the 9 kA figure is the limiting case — verify your available fault current at that voltage before committing the BOM.
Physical fit and panel integration
Dimensions: 248 mm high, 138 mm wide, 110 mm deep. Mounts on a standard DIN rail or direct panel surface. Front protection class IP40 keeps dust and tools out of the trip-unit compartment. Operating temperature range -25 °C to 70 °C; storage from -40 °C to 80 °C.