630 A MCCB with ETU560 — line protection for main feeders
The Siemens SENTRON 3VA2463-6JQ32-0DH0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, carrying the ETU560 electronic trip unit for adjustable overload and short-circuit protection on main feeders and large branch circuits. Breaking capacity runs 242 kA at 240 V and 187 kA at 415 V, dropping to 40 kA at 690 V — this unit handles high-fault utility feeds and industrial distribution without cascading upstream.
Trip unit and auxiliary releases
Maximum power loss is 164.5 W — factor that into enclosure ventilation calculations. The storage minimum matters for unheated warehouses in cold climates — this breaker can sit through a northern winter without damage.