What this star-delta assembly delivers
The 3RA2415-8XH31-2BB4 is a pre-assembled SIRIUS star-delta (wye-delta) contactor package from Siemens — three size S00 contactors, an interlocking RS kit, and the timing relay already wired on a common mounting plate. It ships with one 3RT2015-2BB41-0CC0 and two 3RT2015-2BB41 contactors, plus the 3RA2913-2BB2 RS assembly kit.
Mounting and terminal details
The assembly is 145 mm deep, 135 mm wide, and 84 mm tall, with 6 mm clearance needed upwards, forwards, downwards, and to the sides, and 0 mm backwards. Both main current and auxiliary/control circuits use spring-loaded terminals — no screw torque to check, no vibration loosening over time. AWG equivalents are 1x (20... 12). The magnet coil termination is also spring-type, rated 24 V DC with 10 W closing and holding power.