What it is and what it does
The Siemens SENTRON 3VA2063-6HN46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous at 40 °C, using an ETU350 electronic trip unit for line protection. It's built to clear faults fast — 242 kA at 240 V, 187 kA at 415 V, tapering to 3 kA at 690 V — so it handles high available fault current without upstream coordination headaches. The 63 A rating holds flat across the full ambient range from 40 °C to 70 °C — no derating curve to chase in a hot panel.
Panel fit and footprint
Dimensions are 140 mm wide, 181 mm tall, 86 mm deep — a 4-pole MCCB that fits a standard distribution board cutout. IP40 on the front means it's protected against solid objects over 1 mm, fine for indoor switchgear but not for washdown areas.
Lifecycle and sourcing
This part is flagged as current production — no end-of-life notice on record. That means it's still a standard BOM line, not a last-time-buy scavenger hunt. We source it to order against an RFQ; availability and current pricing are confirmed at quote time.