An Eaton Moeller cam switch is a robust, rotary electrical switch designed for industrial control, allowing users to select and control different circuits or functions by rotating a cam-actuated mechanism to various positions. These switches are known for their durable construction and ability to handle high current applications, featuring different configurations like changeover with off, multi-position, and isolator switches for functions such as motor control, power selection, and instrumentation. 
How They Work

• Rotating Actuator: A user turns a knob or shaft, which is connected to a cam. 
• Cam Mechanism: As the cam rotates, it precisely actuates internal electrical contacts, making or breaking them in a sequential manner. 
• Sequential Control: This rotation allows for the control of multiple circuits or functions with a single, compact device. 

Key Features & Characteristics

• Robust Design: Built for demanding industrial applications and higher current handling compared to simpler rotary switches. 
• Precise Control: The cam mechanism provides accurate and repeatable switching positions. 
• Multiple Configurations: Available in various types, including:
  • Changeover Switches: For transferring power between different sources or circuits. 
  • Isolator Switches: To disconnect and isolate circuits for safety. 
  • Motor Control Switches: To manage different motor functions and speeds. 
  • Multi-Position Switches: To select from a range of settings or steps. 
• Contact Types: Can include single-pole, multi-pole, and various contact arrangements to suit different circuit needs. 
• Mounting: Can be rear-mounted or base-mounted for flexibility in installation. 

Common Applications
Eaton Moeller cam switches are used in a variety of industrial settings for:

• Machine Control: Selecting and controlling different operating modes of machinery. 
• Power Distribution: As changeover and isolator switches to direct and disconnect power. 
• Instrumentation: Selecting between different measurement points or circuits for ammeters and voltmeters.