The Siemens 3VA2612-6HL32-0DH0 is a 3-pole IEC-frame 1250 A circuit breaker from the 3VA2 series, fitted with an ETU320 LI electronic trip unit. The 1250 A continuous current rating (In) with an adjustable overload pickup (Ir) from 500 to 1250 A gives selectivity headroom for feeding multiple downstream feeders or a single large load.
The ETU320 LI trip unit provides two protection curves: long-time (L) for overload and instantaneous (I) for short-circuit. The overload Ir is adjustable from 500 to 1250 A, letting you match the breaker to the actual cable or bus load without swapping the frame. The short-circuit pickup Ii ranges from 1.5 to 10 x In — so from roughly 1875 to 12 500 A — which lets you set the magnetic threshold above normal motor inrush or transformer magnetizing current to avoid nuisance trips.
Deployment context
This breaker mounts in a standard IEC switchboard or panel — typically bolted to a busbar system or mounted on a DIN-rail adapter for the 3VA2 frame. The nut keeper kit is factory-fitted to secure the terminal connections under high vibration — a detail that matters in industrial environments with nearby compressors or large contactors.