Allen-Bradley 800TC-XD4 Contact Block Assembly

Allen-Bradley 800TC-XD4 is a shallow 30 mm contact block accessory for the 800T pushbutton family, designed to mount on standard 800T operator devices to add a single normally closed contact with late-break action. This two-pack includes two 800TC-XD4 blocks with finger-safe terminals for secure wiring in panel installations. Each block provides 1NC contact in a late-break configuration, allowing an additional circuit path for monitoring, interlocking, or signaling alongside the primary pushbutton function, while preserving the original actuator’s alignment. The XD4 suffix denotes the shallow form factor optimized for 30 mm 800T controls and integrates with the modular 800T family’s accessory system, enabling straightforward replacement or expansion without changing the main control device. Typical applications include wiring a secondary NC contact to monitor a circuit or implement interlock logic in an automated control panel, or to provide a local feedback signal for process control, all within the same 30 mm operator footprint. The blocks use finger-safe terminals to simplify field wiring and help meet common safety practices in industrial environments. Compatible with Allen-Bradley 800T pushbuttons and related 30 mm operators, these contact blocks extend the versatility of standard 800T controls in a compact, easy-to-install package.