Motor protection breaker for IEC panels
The Siemens 3VA2325-5MP32-0LE0 is a 3-pole motor protection circuit breaker on the IEC frame 400 platform, rated In=250 A with an ETU550M LSI trip unit. Overload protection is adjustable via IR from 100 A to 250 A, matching the full-load amps of a range of medium motors. Short-circuit protection uses Isd (1.2–15× In) and Ii (3–15× In) settings, giving selectivity headroom for downstream starters. The LSI curve covers long-time, short-time, and instantaneous functions — no ground-fault element in this variant.
Mounts on DIN rail or panel via the 3VA2 frame's fixed-pattern base. The ETU550M is a microprocessor-based trip unit; it draws auxiliary power from the line side — no external control power needed for trip functions. Busbar connection is standard for the frame 400 footprint, compatible with Siemens 8US busbar systems for backplane distribution. The universal release accessory (24 V DC) listed in the description suits shunt-trip or undervoltage applications, wired separately to the trip coil.