S00 reversing starter with built-in interlocking
The Siemens 3RA2210-1CA15-2BB4 is a SIRIUS reversing starter in size S00, combining two contactors with a mechanical interlock for forward/reverse motor control in a single package. The Class 10 trip characteristic coordinates with standard motor thermal overloads, giving the motor 10 seconds of locked-rotor withstand before the overload trips.
DIN rail footprint and panel clearance
Clearance requirements: 50 mm above, 32 mm in front, 10 mm to each side, and 10 mm below — no space needed behind the rail. The main circuit uses screw-type terminals, common in panel builds where ring or fork lugs are preferred over spring-clamp terminations.
Supplied components and coil voltage
This reversing starter ships with a 3RT2015-1BB42 contactor and a 3RA1921-1DA00 link module — the interlocking and bus connections are pre-assembled, reducing wiring time. The coil is rated 24 V DC; the 24 V control voltage matches standard PLC and safety relay outputs common in modern panels. Operating ambient range is -20 to +60 °C, with storage and transport limits of -50 to +80 °C — suitable for unheated warehouses or container shipping.