630 A MCCB with ETU560 — breaking capacity and thermal derating
The Siemens 3VA2463-5JQ32-0HL0 is a SENTRON 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with an ETU560 electronic trip unit for line protection. Breaking capacity reaches 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V — meaning this breaker handles high fault currents at common distribution voltages without cascading upstream. Current derating is specified across the operating temperature range: 630 A at 40 °C, stepping down to 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 — critical for panel builders sizing the breaker in a warm enclosure.
Dimensions and panel fit
The breaker measures 248 mm high, 138 mm wide, and 110 mm deep — confirm the DIN-rail or mounting-plate footprint clears adjacent devices and the enclosure door swing.
Auxiliaries and releases
Factory-fitted with a shunt trip release (STL), plus two auxiliary switches, one trip alarm switch, and one electrical alarm switch — the HQ auxiliary contact version covers status feedback and remote tripping without adding external relays. Communication function is integrated, and the overcurrent release is the ETU560 electronic unit with a voltage trigger for alarm outputs.