249973 - Miller XT-60 Torch Cup Detect Safety Switch Kit

Miller 249973 Replacement Cup Detect Switch for XT Torches

The Miller 249973 Cup Detect Switch is a critical repair part for welders and fabricators using Miller Spectrum series plasma cutters equipped with XT-30, XT-40, or XT-60 torches. This microswitch serves as the primary safety interlock in the torch head, completing the control circuit only when the retaining cup is fully threaded and seated. A common symptom of a failed switch is the "Cup" indicator light remaining illuminated on the power source panel, preventing the pilot arc from initiating despite the consumables being tight and in good condition.

Designed for the rigors of industrial environments, this switch handles the mechanical actuation of the safety pins located in the torch head. It is rated for the low-voltage control signals used by Miller Spectrum machines (such as the Spectrum 375 X-TREME, 625 X-TREME, and 875). The kit includes the switch unit and replacement screws, addressing common issues where the original screws may be stripped or lost during disassembly. Proper installation of this switch is vital not only for machine operation but for compliance with safety regulations regarding plasma arc equipment.

Replacing the cup detect switch is a cost-effective alternative to replacing the entire torch body or lead assembly. It allows technicians to extend the service life of their existing XT torches. The switch features robust contact points designed to withstand the vibration and thermal expansion common in manual plasma cutting applications. Ensure your equipment remains reliable and safe by replacing worn or intermittent switches immediately.

Technical Specifications

• Compatibility: Miller XT-30, XT-40, XT-60 Handheld Torches.
• Function: Safety Interlock / Cup Presence Detection.
• Kit Contents: 1 Switch, Mounting Hardware.
• Application: Repair of "Cup Fault" errors on Spectrum Plasma Cutters.