S00 reversing starter with thermal overload
The Siemens 3RA2215-1BA16-2BB4-ZX95 is a SIRIUS reversing starter in size S00, combining a contactor and a thermal bimetallic overload relay in one package for forward/reverse motor control.
Mounting and panel fit
Mounts on 35 mm DIN rail via the screw-and-snap-on method, or can be screw-mounted directly to a backplate — the fastening method is listed as both, giving the panel builder a choice. Dimensions are 170 mm high, 90 mm wide, and 97 mm deep. The required clearance above the unit is 50 mm, forward 32 mm, and 10 mm to the side and below — important when laying out gland plates and wire ducts in a crowded enclosure. Mounting position is vertical only, so plan the DIN rail orientation accordingly to keep the bimetallic strip's ambient compensation working correctly.
Coil voltage and ambient limits
The coil is rated 24 V DC — a standard control voltage for industrial panels, but confirm your PLC output or control transformer matches exactly since there's no AC coil option here. Operating ambient temperature range is -20 to +60 °C, with storage and transport range from -50 to +80 °C. The temperature compensation on the overload relay matches the operating range, so derating is minimal within that band.
The supplied contactor is a 3RT2016-1BB42 and the link module is 3RA1921-1DA00 — both are current-production SIRIUS components, so spare parts and replacements are straightforward to source.