The Siemens 3VA2612-5HN32-0AH0 is a 3-pole IEC frame circuit breaker rated 1250 A continuous, with an ultimate breaking capacity (Icu) of 55 kA at 415 V AC — class M on the 3VA2 platform. It carries the ETU350 LSI electronic trip unit, adjustable overload protection (Ir) from 500 A to 1250 A, short-time pickup (Isd) from 1.5 to 10 times Ir, and instantaneous pickup (Ii) fixed at 10 times In.
The ETU350 LSI trip gives you selective coordination: you can set the short-time delay (via Isd) to ride through downstream faults, letting the branch breaker clear first. The 1250 A frame fits main or feeder duty in IEC switchgear; the adjustable Ir band (500–1250 A) lets you match the breaker to the actual load without swapping the frame.
Integration notes
The 3VA2 frame mounts in standard IEC switchgear cubicles with bolted busbar connections. The nut keeper kit simplifies panel assembly by retaining the mounting nuts during installation.