Factory-matched assembly saves panel wiring time
The 3RA2220-4CF27-0AP0: Comes as a complete reversing starter with the supplied contactor 3RT2027-2AP00 and link module 3RA2921-2AA00 already matched — no guessing which contactor pairs with which overload, and no separate sourcing of the mechanical interlock. That saves a few minutes per panel when you're wiring a row of these. Mounts on a 35 mm DIN rail via the adapter for screw and snap-on mounting. The S0 footprint — 90 mm wide, 130 mm deep, 269 mm tall — fits standard distribution panels. Leave 50 mm clearance above and 32 mm in front for wiring access.