Pre-assembled kit — supplied contactor and link module reduce BOM complexity
The 3RA2120-4CE27-0AP0: This starter ships as a factory-assembled unit with the 3RT2027-2AP00 contactor and the 3RA2921-2AA00 link module. That means one order code covers the contactor, overload relay, and mechanical interlock — no separate sourcing for the three components, and no risk of mismatching the link module to the contactor frame.
S0 frame, 45 mm wide — panel layout and DIN-rail integration
The S0 load feeder size and 45 mm width place this starter in the standard SIRIUS compact footprint.
Clearance and environmental limits for enclosure design
Required clearances: 50 mm upward, 20 mm forward, 10 mm downward, 20 mm at the sides, and 0 mm backward — the back can sit flush against the panel backplate. Operating temperature range is -20 to +60 °C; storage and transport range is -50 to +80 °C.