The Allen-Bradley 800T-XD4 contact block is a 30 mm auxiliary contact block for the 800T pushbutton family, providing a single normally closed contact configuration (1-NCLB) to extend signaling options in a compact module. Designed to pair with 30 mm 800T pushbuttons, the XD4 variant mounts to the operator to deliver NC signaling for monitoring, interlocking, or safety-related control circuits in industrial automation. As an official Allen-Bradley accessory from Rockwell Automation, the 800T-XD4 maintains the standard mounting interface of the 800T line and expands panel functionality without the need for additional enclosures.
