The Siemens 3RA2416-8XE31-2BB4 is a pre-assembled star-delta (wye-delta) contactor assembly from the SIRIUS family, size S00, rated for 7.5 kW at 400 V AC. It ships with three contactors already mounted on a common base plate: two 3RT2017-2BB41 units (one with a -0CC0 suffix) and one 3RT2015-2BB41, plus the 3RA2913-2BB2 RS assembly kit. The assembly uses spring-loaded terminals for both main and control circuits — no screwdriver needed for wiring, which speeds panel build and reduces torque-check time on the line. At 500 V it handles 10.3 kW, and at 690 V it handles 9.2 kW — the derating at the higher voltage reflects the current-limited design of the S00 frame.
Dimensions: 84 mm high, 135 mm wide, 145 mm deep. The S00 size keeps the footprint compact for a three-contactor star-delta group. Spring-loaded terminals accept 2x (0.5... 4 mm²) solid or 2x (0.5... 2.5 mm²) stranded conductors for the main circuit, and 1x (20... 12) AWG. The magnet coil uses spring-type terminals as well — consistent termination method across the assembly. No auxiliary switch or bus communication module is fitted as standard; the assembly is a pure power switching group.