The A3PB41-600R-01 is a 2-position momentary pushbutton with a 44 mm mushroom-head red actuator and one normally-closed (1NC) contact block. This is a standard panel-mount emergency-stop or palm-actuated control station component.
Mounts in a standard 22.5 mm panel cutout. The 44 mm mushroom head extends beyond the bezel for easy palm actuation. Wire the 1NC contact into the safety circuit's series chain — a common practice for emergency-stop strings per NFPA 79. Spring-clamp or screw terminals on the contact block accept 0.5–2.5 mm² conductors.
The momentary action returns the actuator to the rest position when released; no twist-to-release or key-release mechanism is present. For a maintained stop function in a safety loop, pair this with a separate latching relay or use a maintained-mushroom variant.