200TB - Weldcraft A-200 Modular Replacement Torch Body

Technical Overview of the Weldcraft 200TB Torch Body

The Weldcraft 200TB Torch Body serves as the central structural and conductive component for the A-200 Modular Series (formerly known as the WP-26 Modular). Engineered by Miller Electric under the Weldcraft brand, this torch body is designed to facilitate heavy-duty air-cooled TIG welding applications where versatility and thermal management are paramount. The unit is rated for a welding output of 200 Amps DC and 150 Amps AC at a 60% duty cycle, making it one of the most capable air-cooled options in the industrial market.

The defining technical characteristic of the 200TB is its modular interface. Unlike fixed-head torches, the 200TB features a threaded receptacle at the distal end that accepts a variety of interchangeable heads, including rigid, flexible, and valved configurations. This modularity allows for rapid reconfiguration of the welding apparatus to suit complex geometries without necessitating the procurement of multiple complete torch assemblies. The body itself is constructed from high-grade copper alloys to ensure minimal electrical resistance and efficient heat dissipation, which is critical in air-cooled systems lacking active liquid cooling.

Externally, the torch body is encased in a high-dielectric, high-temperature silicone rubber compound. This insulation protects the operator from high-frequency voltage leaks and conductive heat transfer during prolonged welding cycles. The proximal end of the body features a standard 7/8-14 RH thread, ensuring compatibility with standard one-piece power cables used in the 26-series ecosystem. This standardization simplifies inventory management for MRO departments, as the 200TB integrates seamlessly with existing cabling and power sources.

In industrial maintenance and fabrication environments, the 200TB offers a robust solution for field repairs and shop fabrication. Its ability to handle thicker gauge materials (up to 1/2 inch aluminum or steel, depending on joint configuration) while remaining air-cooled reduces the equipment footprint by eliminating the need for water circulators. This makes the 200TB an ideal specification for mobile welding rigs and heavy fabrication stations.