Reversing starter for 60 mm busbar systems
The Siemens 3RA2220-1HD24-0BB4 is a SIRIUS reversing starter in size S0, designed to snap directly onto 60 mm busbar systems — no separate mounting plate needed. The 24 V DC coil keeps control circuit wiring consistent with standard PLC outputs, and the Class 10 trip characteristic protects standard squirrel-cage motors during start-up.
What ships in the box — supplied components
This reversing starter ships as a pre-assembled unit that includes a 3RT2024-1BB40 contactor and a 3RA2921-1BA00 link module — no separate ordering of interlock hardware. Clearance around the unit: 50 mm above, 32 mm in front, 10 mm at the sides and below — zero clearance needed behind the mounting surface.