Door operated switches in electrical panels are panel light switches that turn ON the internal lighting when you open the panel door, and turn OFF the light when you close the door. They help technicians see clearly inside the panel during maintenance work.
How Door Operated Light Switches Work
Simple operation:
Door CLOSED → Switch OFF → Panel light OFF
Door OPEN → Switch ON → Panel light ON
Main Purpose
Primary function: Automatically turns on panel internal lighting when door opens for safe, clear visibility during maintenance, testing, and troubleshooting.
Benefits:
- Hands-free operation – no need to find separate light switch
- Always ON when door open – never forget to turn light on
- Energy saving – light automatically OFF when door closed
- Better safety – clear visibility of live components
Types of Door Light Switches
| Type | Features | Common Use |
|---|---|---|
| Plunger Type | Door pushes button/plunger | Standard control panels |
| Roller Lever | Roller arm follows door movement | Heavy doors, MCC panels |
| Proximity | Magnetic/non-contact | Clean rooms, frequent use |
Installation Tips
- Alignment: Ensure 2-3 mm clearance when door closed
- Wiring: Use 1.5 mm² copper for light circuit
- Fuse: 2A MCB protection mandatory
- Testing: Operate door 10x to verify reliable switching
Door operated switches automatically turn ON panel lights when you open the door for maintenance and turn OFF when closed. Perfect for safe, clear visibility inside electrical panels without manual switching.
Leave a Reply