The 256-746 is a 1-pole Modular PCB Terminal Block with tin-plated electrolytic copper contacts. It is ideal for in-the-field wiring thanks to simplified push-button actuation. The terminal block comes with a polyamide 66 (PA 66) insulator, push-button actuated CAGE CLAMP? and 2 solder pins/pole. Set to metric or inch pin spacing by compressing terminal strips together or pulling them apart.