Screw/Spring Terminal Blocks

The screw and spring terminal block category covers one of the most fundamental wiring components used in industrial control panels, machine enclosures, and process automation systems. Panel builders, controls engineers, and OEM machine shops rely on these blocks for reliable, serviceable wire termination across a wide range of conductor sizes — typically from 1.5mm² through 4mm² and beyond. Common sub-types include single-level feed-through blocks for straightforward point-to-point connections, two-level or multi-level feed-through blocks that reduce DIN rail space by stacking circuits vertically, and combination feed-through/ground blocks that integrate an earth ground circuit alongside a standard feed-through circuit in a single housing. Accessory components such as center jumpers and test plugs extend functionality for circuit linking and in-panel diagnostic access without disconnecting wiring. Color-coded versions simplify circuit identification during installation and troubleshooting. With over 1,000 SKUs available, this category supports virtually any panel wiring topology or wire gauge requirement.