DIN rail-mount interconnect systems consist of a broad range of feed-through, ground, double, triple, switching, LED indicator, and fused terminal blocks plus a mounting rail. Modular DIN terminal blocks are available in a wide variety of sizes and specific configurations. Blocks can be mixed and matched on standard DIN rail, and mounted with interface modules and other components to provide a complete connection system. Blocks and accessories can be supplied separately or as a pre-assembled custom unit. DIN rail terminal blocks provide the system designer with a rugged, compact, and flexible interconnect family. Further user-oriented features include wide cable entry and funnel shaped guides which ensure that all wire strands enter the clamps, improved thread design to withstand over-torquing, bussing provisions, and captive screws. Blocks are supplied ready to wire with captive screws backed out.