Reversing starter for a motor branch
The 3RA2210-0KA15-2BB4 is a SIRIUS reversing starter, size S00 — a factory-assembled combination of a reversing contactor pair and a thermal overload relay in one package, saving panel space over a discrete build. It ships with the contactor 3RT2015-1BB42 and the link module 3RA1921-1DA00 already integrated, so the wiring between the contactor coils and the overload is done at the factory.
Mounting and cooling clearances
Mounts vertically on 35 mm DIN rail with the screw-and-snap-on fastening method; the envelope is 170 mm high, 90 mm wide, and 97 mm deep. Required free space for thermal dissipation: 50 mm above, 32 mm in front, 10 mm below, and 10 mm at the side — the bimetallic overload relies on ambient air flow to track motor temperature, so these clearances are not optional.