11 kW reversing starter, size S0
The 3RA2220-4CB27-0AK6: The assembly integrates a supplied contactor (3RT2027-1AK60), a link module (3RA2921-1AA00), a circuit-breaker (3RV2021-4CA10), and an RH assembly kit (3RA2923-1BB1) — everything needed for a reversing motor feeder in one package.
Mounting and panel fit
Mounts on a 35 mm standard mounting rail via the supplied adapter for screw or snap-on fastening; the vertical mounting position is required for proper thermal overload calibration. Envelope dimensions: 265 mm high, 90 mm wide, 120 mm deep — the depth is the critical number when planning a shallow backpanel enclosure, and the 90 mm width matches the standard S0 feeder footprint. Clearance requirements: 50 mm upwards, 32 mm forwards, 10 mm at the sides, 10 mm downwards, and 0 mm backwards — the zero backward clearance means it can sit flush against a backplate or busbar support.
Electrical ratings and operating range
Maximum AC-3 rated voltage is 690 V, and the operating frequency covers 50 to 60 Hz — the coil supply must match the tap: 88–121 V at 50 Hz, 96–132 V at 60 Hz. Ambient operating range is -20 to +60 °C, with storage and transport limits of -50 to +80 °C — the bimetallic overload release compensates over the full operating band. The overload release is thermal bimetallic (ambient-compensated), and the short-circuit trip is magnetic — both housed in the size S0 circuit-breaker frame.
Lifecycle and sourcing
RoHS compliance date is 05/01/2012 — the part meets the EU RoHS directive for substances of concern.