Pushbutton kit for SIRIUS motor starter assemblies
The 3RA9012-5BH34 is a red pushbutton with 1 normally-open and 1 normally-closed contact, terminated via cage clamp, and is part of the GM-SET accessory range for Siemens SIRIUS motor starters.
Cage clamp termination and panel fit
Cage clamp connection accepts solid or stranded conductors without screw tightening — the spring clamps the wire against the current bar, reducing wiring time on a DIN-rail panel. The 1NO+1NC contact arrangement gives a self-monitoring feedback loop: the NC leg can be wired into the starter's control circuit to signal the pushbutton state back to the PLC.