235866 - Miller 170 PSI Pressure Switch NO 1/4-Inch Terminals

Reliable System Monitoring with Miller OEM Parts

The Miller 235866 Pressure Switch is a critical component designed for the precise monitoring of pressure systems within Miller welding equipment. Engineered to meet the rigorous standards of industrial environments, this switch features a Normally Open (NO) configuration that closes the electrical circuit once the system pressure reaches 170 PSI. This functionality is essential for safety interlocks, often used to verify coolant flow or gas pressure before allowing the welding arc to initiate or continue, thereby protecting expensive torch components and power sources from catastrophic failure due to overheating.

Constructed with durability in mind, the switch is built to resist the vibration, thermal cycling, and environmental contaminants common in welding workshops and fabrication plants. The integration of 1/4-inch Fast-On terminals (also known as spade connectors) facilitates rapid installation and replacement, ensuring a secure electrical connection without the need for soldering or specialized crimping tools during field repairs. This design consideration is vital for maintenance personnel looking to minimize equipment downtime.

Using genuine Miller Electric replacement parts like the 235866 ensures compatibility with your specific machine's logic and control circuitry. Aftermarket or generic switches may not have the precise calibration or hysteresis required for the sensitive electronics found in modern inverters and cooling systems. Whether you are repairing a TIG cooler or a MIG power source, relying on OEM specifications guarantees that the safety parameters of the machine remain intact.

At Josef Gas, we understand that the reliability of your welding fleet depends on the quality of every individual component. This pressure switch is stocked to support professional repair technicians and facility managers who demand the correct part for the job. Verify your machine's serial number and parts manual to ensure this 170 PSI NO switch is the correct specification for your equipment.