Terminal Blocks include a broad range of fixed-mount and pluggable European cage clamp, U.S.-style screw clamp and spring clamp style wire-to-board and wire-to-wire blocks and related headers in .098" to .591" centers. This range of blocks, combined with engineering responsiveness, serve as the basic elements with which a broad series of creative application solutions ranging from interface modules to new I/O block developments are created. Interface modules are industrial interconnect devices which expand traditional Terminal Block I/O functions by incorporating the blocks, high density connectors and often additional components into a rail-mounted printed board assembly.