The White Rodgers 3L09-4 is a 1/2" bimetal disc board mount limit control designed to provide reliable temperature regulation in HVAC systems. It features a snap-action mechanism that opens at 150°F and closes at 130°F, ensuring consistent thermal protection.Key Specifications:
- Part Number: 3L09-4
- Type: Snap Disc Limit Control
- Mounting Style: Board Mount
- Switch Action: Opens on Temperature Rise
- Open Temperature: 150°F
- Close Temperature: 130°F
- Disc Size: 1/2"
- Applications: Ideal for furnaces, heating equipment, and air handlers

