92551075 - Tweco GC-600 Copper Ground Clamp 600A

Heavy-Duty Industrial Grounding Solution

The Tweco GC-600 Ground Clamp (SKU: 9255-1075) represents the gold standard in high-amperage manual welding grounding accessories. Designed for professional industrial environments where reliability and conductivity are paramount, this clamp is engineered to handle up to 600 Amperes. The body is cast from a specialized copper alloy containing approximately 98% copper, ensuring superior electrical conductivity compared to steel or lower-grade brass alternatives. This high copper content significantly reduces electrical resistance at the connection point, thereby minimizing heat generation and energy loss during the welding process.

Mechanically, the GC-600 is built to endure the rigors of heavy fabrication shops, shipyards, and structural steel sites. It features a robust steel spring that delivers substantial clamping force, ensuring the jaws bite firmly into the workpiece. The jaw design provides a 2-inch opening capacity with a 1-1/2 inch throat depth, allowing operators to attach the ground to a wide variety of material thicknesses and profiles, from plate steel to structural beams. The contact surfaces are designed to maximize surface area contact, further stabilizing the welding circuit.

A critical technical feature of the Tweco GC-Series is the Ball-Point cable connection system. Unlike standard set screws that can fray wire strands and loosen over time due to thermal cycling, the ball-point design applies pressure evenly across the cable strands. This ensures a secure mechanical and electrical bond that withstands the vibration and movement typical of manual welding operations. The clamp is rated for use with 3/0 and 4/0 welding cables, making it suitable for high-output power sources. Maintenance personnel will appreciate the simple installation process and the availability of replacement parts, ensuring a long service life for this essential component.