RX WELD CT40-FA with LC40 Male Connectors - Heavy-Duty Cable Fit

Our review of the RX WELD 2PCS CT40-FA kit finds it is a focused connector set for technicians who need reliable, high-current cable connections. The kit is best for welders, shop fabricators, and maintenance teams who work with large battery or welding leads because it pairs two CT40-FA housings with two LC40 male cable connectors sized for No. 1/0 through No. 2/0 (50-70mm2). The single biggest reason to buy is its clear match of connector amp rating to common heavy gauge cable sizes, giving confidence that a 350 amp LC40 will handle demanding current without guesswork.

Key Features

• Packaged for convenience: Includes 2PCS CT40-FA and 2PCS LC40 male connectors so users get a complete pair set for cable ends without sourcing parts separately.
• High amp capacity: The LC40 male connector is rated for 350 amp, which provides headroom for many welding and heavy battery applications.
• Large cable compatibility: Specified for cable capacity No. 1/0 thru No. 2/0 (50-70mm2), making it suitable for heavy-duty leads and short runs where low voltage drop matters.
• Brand consistency: Supplied by RX WELDER as a matched kit, reducing the risk of mismatched housings and male contacts during installation.
• Straightforward application: The parts are presented as a simple replacement or upgrade for worn connector ends on large cable assemblies.

Who It's For

This kit is aimed at professionals and experienced hobbyists who work with welding leads, battery jumper cables, or heavy power distribution where No. 1/0 to No. 2/0 cable is common. Electricians, mobile welders, shop technicians, and fabricators who need connectors rated around 350 amp will appreciate the clear fitment and matching parts.

It is not targeted at light-duty electronics or small-gauge wire users; anyone using thinner cables or requiring insulated lead management accessories should look elsewhere. Also, installers who need specialized crimps or tooling should confirm they have the proper crimp or solder equipment for 50-70mm2 conductors.

Pros & Cons

Pros

• Complete kit packaging saves time sourcing matching housings and male connectors.
• 350 amp LC40 rating provides suitable capacity for many welding and heavy battery applications.
• Clear cable capacity specification (No. 1/0 thru No. 2/0) reduces compatibility guesswork.

Cons

• Limited to larger cable sizes; not usable for smaller gauge wiring without adapter parts.
• Installation requires appropriate crimping or termination tools which are not included in the package.

Specifications

Our Verdict

The RX WELD CT40-FA kit is a practical choice for professionals who need a matched pair of heavy-duty connectors for No. 1/0 to No. 2/0 cable. Its 350 amp LC40 rating and packaged housings deliver value by reducing part-matching errors, though buyers should have the proper termination tools on hand. For anyone fitting or repairing welding leads and large power cables, this kit provides reliable capacity and straightforward compatibility.

Frequently Asked Questions

What cable sizes does this kit support?
The kit supports No. 1/0 thru No. 2/0, which is 50-70mm2 cable capacity.

What is the amp rating of the LC40 connector?
The LC40 male connector in this kit is rated for 350 amp.

Does the package include crimping tools?
No, the package includes the CT40-FA housings and LC40 male connectors only; termination tools are not included.