Description
Marley Engineered Products 135°F CO AUTO Limit Switch
The Marley Engineered Products 4520-2048-000 is a precision-engineered automatic-reset limit switch designed to protect heating equipment from overtemperature conditions. With a 135°F cut-out (CO) set point and automatic (AUTO) reset functionality, this limit switch provides dependable thermal protection — shutting down the system when temperatures exceed the rated threshold and automatically restoring operation once safe temperatures are reached.
Key Features
- 135°F cut-out (CO) trip temperature for accurate overheat protection
- Automatic (AUTO) reset — restores operation once temperature returns to safe range
- Designed as a direct OEM replacement for compatible Marley Engineered Products heating equipment
- Provides reliable thermal safety control to prevent equipment damage and potential hazards
- Compact, durable construction built for long service life in demanding HVAC applications
Application
This limit switch is a genuine Marley Engineered Products replacement part, engineered to integrate seamlessly with compatible electric heaters and heating systems. It is ideal for HVAC technicians and service professionals performing maintenance, repair, or replacement on Marley heating equipment.
Product Specifications
- Brand: Marley Engineered Products
- Part Number: 4520-2048-000
- Cut-Out Temperature: 135°F
- Reset Type: Automatic (AUTO)
- Switch Type: Limit Switch (CO)







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