The Allen-Bradley 800M-XD2 is a 22 mm contact block from the 800M family (Bulletin 800M) designed to mount with compatible 22 mm pushbuttons and provide a single normally closed (NC) circuit. The screw-terminal variant 800M-XD2S uses pressure-plates for secure wire termination and is configured for 1 NC. This 800M block adds NC contact capability to a 22 mm pushbutton assembly for simple signaling and control-circuit applications.
