Tweco 4-MPC Male Cable Connector for 3/0-4/0 Cable

Reliable Connections for Heavy-Duty Welding

When you are pushing high amperage through long welding leads, your connections are the most critical link in the chain. The Tweco 4-MPC Male Cable Connector (SKU: 9425-1246) is the industry standard for professional welders who demand reliability and performance. Designed to fit substantial 3/0 and 4/0 AWG cables, this connector allows you to build custom extension leads or repair existing cables with confidence. Whether you are working on structural steel, pipeline projects, or heavy equipment repair, the Tweco MPC series ensures your power delivery remains constant and efficient.

Quick and Secure Setup

Gone are the days of struggling with permanent splices or unreliable tape jobs. The Tweco 4-MPC system offers a true quick-connect solution. The male connector mates perfectly with any standard No. 4 MPC female receptacle. With a simple push and twist, the unique cam-lock action secures the connection, ensuring it won't pull apart while you are dragging cables across the shop floor. This feature is invaluable for mobile welders who need to set up and tear down equipment rapidly at different job sites.

Built to Last

Durability is built into every aspect of this connector. The heavy-duty rubber cover protects the metal components from impact, abrasion, and shop fluids like oil and coolant. Inside, the cable is held firmly in place by a ball-point screw. This smart design feature presses the cable strands tightly against the copper body without cutting them, preserving the integrity of your expensive welding cable. Installation is simple and requires only a hex key and a knife to strip the cable jacket, making field repairs a breeze.

Why Choose Tweco?

Tweco has been a leader in welding components for decades. Their Mechanical Power Connectors (MPC) are trusted worldwide for their low resistance and high efficiency. A poor connection can lead to heat buildup, voltage drop, and an unstable arc—issues that directly affect weld quality. By choosing the Tweco 9425-1246, you are investing in a stable arc and a safer work environment.