173552 - Miller 173552 8-Position Rotary Switch 1P 6A 125VAC

Genuine Miller 173552 Rotary Switch for Welding Power Sources

The Miller 173552 is a specialized electromechanical component designed for use in specific Miller welding machines. As a genuine OEM (Original Equipment Manufacturer) part, this rotary switch meets the exact engineering specifications required for the safe and reliable operation of your equipment. The switch features an 8-position configuration, allowing for multiple selection states, which is commonly utilized in welding power sources for adjusting output parameters, selecting processes, or managing internal control logic. It is built as a Single Pole (1P) device, meaning it controls a single circuit across its eight potential output states.

Electrically, the Miller 173552 is rated for a current load of 6 Amperes at 125 Volts AC. This rating ensures it can handle the control signals or low-power auxiliary circuits typically found on the printed circuit boards of industrial welders. The physical design is specifically tailored for "PC Mtg" (Printed Circuit Mounting), featuring terminals that are designed to be soldered directly into a PCB rather than connected via wire leads or spade terminals. This ensures a compact footprint and a vibration-resistant connection, which is critical in the harsh, high-vibration environments often associated with welding operations.

The switch incorporates a 30-degree indexing angle. This mechanical specification refers to the rotational distance between each of the 8 positions. A 30-degree index provides a distinct tactile "click" or detent, giving the operator or technician positive feedback that the switch has settled into the correct position. This precision is vital for avoiding intermediate states that could cause control errors or machine faults. When replacing a component like a rotary switch, using the authentic Miller 173552 ensures that the physical dimensions, pin spacing, and shaft length align perfectly with the machine's enclosure and control knobs, eliminating the need for modification during repair.

Maintenance and repair professionals understand that the integrity of a welding machine relies on the quality of its smallest components. A failing rotary switch can manifest as intermittent operation, inability to select specific settings, or complete loss of function in the associated circuit. By installing this genuine Miller part, you restore the factory-original performance and maintain the safety certification of the equipment.