Reversing contactor assembly for motor reversing duty
The Siemens 3RA2317-8XB30-2BB4 is a SIRIUS reversing contactor assembly — a pre-assembled pair of contactors mechanically and electrically interlocked for forward/reverse motor control. It ships with two 3RT2017-2BB42 contactors and the reversing interlock kit 3RA2913-2AA2 already fitted.
The 90 mm width and 84 mm height fit a standard S00 footprint — one 4-module wide slot on most rail layouts. Depth is 83 mm — leaves enough room behind a 120 mm deep enclosure door for the wiring to loop without kinking. Clearance around the assembly: 6 mm upward, 6 mm forward, 6 mm downward, 6 mm at the sides, and 0 mm backward (flush to the rail). The assembly is rated for vibration at 11.4 g / 5 ms and 7.3 g / 10 ms on both AC and DC supplies — good for machine-tool and conveyor applications where the panel sees shock loads.
Sourcing and lifecycle — active production
Compliance: RoHS substance prohibition date is October 1, 2009 — the assembly meets the RoHS directive as amended. No REACH or UL marking is listed in the spec record, so verify any additional jurisdictional requirements with your compliance team before specifying.