5 A AC-3 reversing starter — the duty rating that governs fit
The 3RA2220-1FD24-0BB4: That 5 A figure, not the thermal current, is the one that decides whether this unit handles your motor load without welding contacts on start-up. The coil is 24 V DC, and the supplied contactor is 3RT2024-1BB40 with link module 3RA2921-1BA00.
Snap-on busbar mounting — panel integration
Designed for snapping onto 60 mm busbar systems, vertical mounting position only. The S0 frame footprint is 165 mm deep, 90 mm wide, 260 mm tall — clearance requirements: 50 mm upwards, 32 mm forwards, 10 mm at the sides and downwards, zero backwards. Main circuit terminals are screw-type. Operating temperature range is -20 to +60 °C, storage -50 to +80 °C — suitable for unheated enclosures in temperate climates.