The Siemens 3VA2463-6JP32-0AF0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 630 A at 40 °C with an ETU550 electronic trip unit. Its 3-pole design and 242 kA breaking capacity at 240 V make it a strong fit for high-fault main feeders or large distribution panels where selectivity and arc-flash coordination matter.
Breaking capacity and thermal derating
Rated breaking capacity drops from 242 kA at 240 V to 187 kA at 415 V and 440 V, then to 121 kA at 500 V, and 40 kA at 690 V — the SCCR headroom shrinks as system voltage climbs, so verify the available fault current at your nominal voltage before committing the BOM line. Continuous current derates with ambient temperature: 630 A at 40 °C, 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 the panel runs hot, the effective rating is lower than the nameplate Iu.
Integration and dimensions
Dimensions are 248 mm high, 138 mm wide, and 110 mm deep — a standard 3-pole MCCB footprint that fits most switchboard or panelboard cutouts. The ETU550 electronic trip unit supports communication, and the auxiliary contact version includes one auxiliary switch plus one trip alarm switch (HQ).