The STA-Series is the most advanced, yet simplest range of controls for projection welding. The range spans from the single contactor STA-100A to the STA-800A with space for up to eight contactors that can be cascaded from a single control. The STA Series features a common intuitive, easy-to-use programming interface for all models and is designed to control and integrate press welders, projection welders, multi-gun machines, portable guns, seam welders, robotic systems, rocker arm welders and special purpose machines.