What this part is
The Siemens 3RA9012-5BP41 is a pushbutton set for the 3RA2 motor starter series — a mushroom-head push-pull operator with two normally-closed contacts and cage clamp terminals, not a standalone motor starter itself. The description specifies it is an illuminated push-pull type, meaning the head stays depressed after a push and requires a pull to reset, with the illumination confirming the actuated state on the panel.
Integration notes for the panel builder
The 2NC contact block provides a redundant break path in the motor starter control circuit — typical for safety-related stop functions where the NC pair feeds the safety relay or PLC input, and the cage clamp accepts solid or ferruled stranded wire without screw torque variability. Mounts directly onto the 3RA2 series contactor or base unit; the mushroom head projects through the enclosure cutout and the push-pull mechanism latches mechanically, so the reset pull force must clear any panel-mounted guarding or shrouding.