LC40HD - Lenco LC-40HD Heavy Duty Welding Cable Connector Set (3/0-4/0)

Reliable Power for Heavy Welding

When you are pushing high amperage through long leads, your cable connectors are often the weak link. A loose or poorly designed connector creates resistance, heats up, and drops your voltage—leading to an unstable arc and frustrated operators. The Lenco LC40HD Cable Connector Set is built to solve these problems. Designed specifically for heavy-duty 3/0 and 4/0 welding cable, this set gives you the confidence that your power delivery is secure, efficient, and safe.

Superior Connection Technology

What sets the LC40HD apart is how it grips your cable. It uses a Double Oval-Point Screw system. While cheaper connectors might crush your cable strands with a single screw, Lenco uses two large, oval-tipped screws that compress the cable firmly against the brass body without severing the strands. This creates a massive contact area for the current to flow, keeping the connector cool even when you are welding at 500 amps. Installation is simple and requires only the included hex key—no soldering or special crimping tools are needed.

Built for the Shop Floor

Welding cables get dragged across concrete, covered in grease, and exposed to sparks. The covers on the LC40HD are made from a tough, oil-resistant rubber that can take a beating. The metal parts are precision-machined brass with a cam-action lock. When you twist the male and female ends together, they pull tight and stay tight, ensuring the current crosses the joint with almost zero resistance. Whether you are extending your leads for a field job or setting up a quick disconnect at your power source, the Lenco LC40HD is the professional choice for heavy-duty cable management.