2PIN Shallow-Depth Back-Rising Terminal Configuration, 1 Normally Open (1 NO) Contact Block Attachment, Class 800T Series C Architecture, Heavy-Duty Silver-Alloy Contact Tracks, -40°C to +55°C Industrial Operational Window | Standard machine-start logic expansion control module manufactured by Allen-Bradley utilizing quick-connect inline pressure wire screws, optimized to deliver steady electrical continuity loops while completely isolating adjacent low-voltage micro-controller signal inputs from primary line-switching arcs | Industry Exact Equivalents: Allen-Bradley 800T-XD2, Rockwell Automation 800T-XD2, A-B 800T-XD2 Series C | Industry Functional Cross-References: Square D 9001KA1, General Electric CR104PXB, Siemens 3SB3400-0B | Military Specification National Stock Number (NSN): 5930-01-164-8026