The Siemens 3VA2612-5HL32-0HA0 is a 3-pole IEC frame 1250 circuit breaker from the 3VA2 series, rated at 1250 A continuous current with a breaking capacity of 55 kA at 415 V (class M). The ETU320 LI trip unit provides adjustable overload protection (Ir = 500 A to 1250 A) and short-circuit protection (Ii = 1.5 to 10 × In).
The 1250 A frame and adjustable Ir from 500 A to 1250 A mean it covers large feeder or main switchboard applications where load current may vary. The LI (Long-time and Instantaneous) protection curve suits line protection for cables and busbars, not motor overload curves.
Integration and Accessories
The factory-fitted left-side shunt trip allows remote tripping from a 24 V AC/DC control signal — typical for emergency-stop circuits or supervisory control systems. The 3VA2 frame accepts plug-in accessories (auxiliary contacts, undervoltage release, motor operator) without additional wiring.