What this SIRIUS star-delta assembly delivers
The 3RA2425-8XH32-2BB4 is a factory-assembled wye-delta (star-delta) contactor set from the Siemens SIRIUS family, Size S0 frame. It ships with three contactors already wired on a common mounting plate: two 3RT2026-2BB40 units (one with a 0CC0 variant suffix) and one 3RT2024-2BB40, plus the RS assembly kit 3RA2923-2BB2. The 24 VDC magnet coil draws 13.8 W closing and holding power — a single-supply DC coil that stays energised in delta-run. The assembly requires a 35 A fuse upstream (gG NH 3NA, DIAZED 5SB, or NEOZED 5SE) per the manufacturer's coordination table.
Termination, mounting, and panel fit
Overall dimensions are 135 mm wide × 114 mm high × 181 mm deep. Clearance around the assembly: 6 mm upward, downward, and to the side; 0 mm backward (mounting surface). Vibration resistance is 11.8 g / 5 ms and 7.4 g / 10 ms on AC; 15 g / 5 ms and 10 g / 10 ms on DC.