411-1 - Bernard 411-1 Standard MIG Gun Trigger Switch

Reliable OEM Trigger Switch for Industrial MIG Guns

The Bernard 411-1 Standard Trigger Switch is a critical replacement component designed to restore the functionality of high-performance MIG welding guns. Manufactured to strict OEM specifications, this switch ensures consistent electrical contact and reliable arc initiation, which is essential for maintaining productivity in professional welding environments. It is the standard momentary switch found in a wide range of Bernard and Tregaskiss semi-automatic air-cooled MIG guns.

This component is specifically engineered to fit Bernard Q-Gun, S-Gun, and T-Gun series, as well as Tregaskiss TOUGH GUN models utilizing the 300A or 400A large handle design. The switch mechanism is built to withstand the rigors of daily industrial use, including exposure to dust, debris, and repetitive mechanical cycling. Failure of a trigger switch can lead to intermittent arc starts or complete equipment downtime; replacing it with a genuine 411-1 ensures your equipment operates as intended by the manufacturer.

Installation is straightforward, fitting directly into the handle assembly of compatible torches. The 411-1 is a non-locking, momentary switch, meaning the arc remains active only while the operator depresses the trigger, providing standard safety and control for manual welding processes. Whether performing maintenance on a fleet of welding equipment or repairing a single station, this switch provides the durability and precise fit required for industrial MRO applications.