The SENTRON 3VA2463-7JQ42-0AA0 is a 4-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with an ETU560 electronic trip unit configured for line protection. Its interrupting capacity hits 330 kA at 240 V and 242 kA at 415 V — numbers that place it squarely in high-fault-duty main-breaker territory for industrial switchboards and transformer secondaries.
What the ratings mean for the panel
The 630 A frame at 40 °C is the base rating. Derate linearly as the cabinet ambient climbs: 600 A at 45 °C, 570 A at 50 °C, all the way to 450 A at 70 °C. If your switchgear is in a non-conditioned space or packed with heat-producing gear, size the load to the derated figure — the 630 A number only holds at 40 °C ambient. Breaking capacity of 330 kA at 240 V and 242 kA at 415 V means this breaker can safely interrupt faults up to those levels without cascading upstream — critical for a main or tie position where available fault current is high. At 690 V the rating drops to 9 kA, so confirm system voltage before committing the BOM line. The ETU560 electronic trip unit provides adjustable long-time pickup and delay (tr from 0.5 s to 12 s), plus ground-fault monitoring via summation current on L+N. The N-conductor protection is adjustable OFF or 20% to 100% of the phase setting — useful for sizing the neutral on non-linear loads.
Panel integration notes
The breaker occupies 248 mm height, 184 mm width, and 110 mm depth — a 4-pole frame sized for standard switchboard mounting. Front protection is IP40, adequate for indoor panel environments. The communication function supports integration with monitoring systems, though the protocol is not specified in the listing; verify compatibility with your BMS or SCADA gateway.