22mm LAY37-11X2(Y090) Rotary Selector Switch

22mm round LAY37 series rotary selector switch, 2/3 position optional, 1NO 1NO+1NC 2NO contact types. Short & long handle available, 10A 660V AC rating, IP40 protection, silver alloy contacts and flame retardant shell. Suitable for industrial control panels, equipment mode switch and power control system.

Rotary Switch Function Description 

1. 2-position self-locking 1NO+1NC function:

   
   

   When not rotated, one side is energized and the other is de-energized. When rotated, the other side becomes energized and the original side is de-energized.
   
   
2. 2-position self-locking 2NO function:

   
   

   When rotated, both circuits are energized; when rotated back, both circuits are de-energized. (For the self-reset version, it returns to the de-energized position when released.)
   
   
3. 2-position self-locking 2NC function:

   
   

   When rotated, both circuits are de-energized; when rotated back, both circuits are energized. (For the self-reset version, it returns to the energized position when released.)
   
   
4. 3-position self-locking 1NO+1NC function:

   
   

   In the middle position, the left circuit is energized and the right is de-energized. Rotating left de-energizes both circuits; rotating right energizes both circuits (left/right behavior depends on wiring). (For the self-reset version, it returns to the middle position when released.)
   
   
5. 3-position self-locking 2NO function:

   
   

   Rotating left energizes the left circuit; rotating right energizes the right circuit. (For the self-reset version, it returns to the middle position, with both circuits de-energized, when released.)
   
   
6. 3-position self-locking 2NC function:

   
   

   Rotating left energizes the right circuit; rotating right energizes the left circuit. (For the self-reset version, it returns to the middle position, with both circuits energized, when released.)
   
   
7. Key difference:
   
   
   • Self-locking: Stays in the position you turn it to; requires manual rotation to return.
   • Self-reset (spring return): Automatically returns to its original position when you release it.