96101103 - Tweco S-40 Mechanical Cable Splicer for 3/0-4/0 Wire

Reliable Welding Cable Extensions with Tweco S-40

The Tweco S-40 Lug-Set Cable Splicer (Part Number 9610-1103) is an essential accessory for professional welders and fabrication shops requiring flexible and durable cable management solutions. Designed specifically for heavy-duty applications, this mechanical splicer allows you to join two lengths of welding cable—specifically sizes 3/0 and 4/0 AWG—creating a continuous, high-conductivity path for your welding current. Whether you are extending your reach across a large workshop or repairing a severed lead in the field, the S-40 provides a secure connection that stands up to the rigors of industrial environments.

Constructed from a premium copper alloy, the S-40 splicer is engineered to minimize electrical resistance, ensuring that your welding machine delivers its full power to the arc without significant voltage drop at the connection point. The "Lug-Set" design utilizes two robust ball-point set screws that bite firmly into the copper strands of the cable. This mechanical action creates a superior pull-out strength and excellent electrical contact, eliminating the need for soldering or hydraulic crimping tools. This feature makes the S-40 particularly valuable for on-site maintenance where specialized tools may not be available.

Installation is straightforward: simply strip the insulation from the cable ends, insert them into the splicer block, and tighten the screws using a hex wrench. The result is a solid, reusable connection. For safety and protection against short circuits, it is recommended to cover the installed splicer with a compatible rubber boot or heavy-duty heat shrink (sold separately). Trust Tweco's legacy of quality for your power cable accessories.