Reversing starter for busbar-mount panels
The Siemens 3RA2220-1HH24-0AP0 is a SIRIUS reversing starter in size S0, designed to snap directly onto 60 mm busbar systems — no separate DIN-rail adapter needed for the main power feed. Rated power is 3000 W at 400 V, with a CLASS 10 thermal bimetallic overload relay — suited for standard motor starting duty where the rotor locks within 10 seconds at locked-rotor current. Main circuit termination uses spring-loaded terminals, which reduces wiring time compared to screw-clamp and holds firm under vibration.
Supplied sub-assemblies and dimensions
The starter ships as a pre-assembled unit including the contactor 3RT2024-2AP00, link module 3RA2921-2AA00, and busbar adapter 8US1251-5NT11 — no separate ordering of these components. Envelope dimensions are 165 mm deep, 90 mm wide, and 260 mm tall, with a vertical mounting position required and 50 mm clearance upward, 32 mm forward, 10 mm downward, and 10 mm at the side. Operating temperature range is -20 to +60 °C, storage and transport range -50 to +80 °C.