The rotary changeover switch is available as a single-pole changeover switch, a four-pole changeover switch, and also in 2 and 3 pole changeover switches for applications in industrial control, instrumentation, and machinery. 

https://youtu.be/w0OrwDkv0uM

Features:

1. Changeover switches mainly suitable for electrical wiring in the power switch and Squirrel cage type asynchronous motor start-up, reversing, speed switches, also can make the conversion of the control circuit.
   When installing this Universal Changeover Switch, a professional technique is required.
   

Specifications: