Panel fit and form factor
The 3RA2215-1BA16-5BB4 is a size S00 reversing starter that measures 90 mm wide, 170 mm high, and 116 mm deep — the depth is the dimension that determines back-panel clearance in a shallow enclosure. Mounts vertically on 35 mm DIN rail with screw and snap-on fastening; the backwards clearance is 0 mm, so the unit sits flush against the mounting surface. Minimum clearances for ventilation and wiring: 50 mm above, 32 mm in front, 10 mm below, and 10 mm at the sides.
What comes in the assembly
This reversing starter ships as a pre-assembled unit that includes the 3RT2016-1BB44 contactor and the 3RA1921-1DA00 link module — the contactor handles the main current path, and the link module provides the mechanical and electrical interlock for reversing. Main circuit connections are screw-type terminals; the design is for standard rail or screw mounting, so it fits both DIN-rail panels and back-plate layouts.
Lifecycle and sourcing
The SIRIUS series is Siemens' standard motor-management platform, so this reversing starter shares the same mounting footprint and terminal arrangement as the size S00 contactors and breakers in the family.