Description
The Marley Engineered Products 4520-2030-000 is an OEM replacement thermal fuse rated at 144°C (291°F), designed to protect electric heating equipment from dangerous overtemperature conditions. When the surrounding temperature exceeds the rated threshold, this one-time-use safety device permanently opens the circuit, cutting power to the heating element and preventing equipment damage, fire hazard, or component failure.
Key Features
- OEM replacement part for Marley Engineered Products heating equipment
- Rated trip temperature: 144°C (291°F)
- One-time thermal cutoff — opens circuit permanently upon activation
- Provides critical overtemperature protection for electric heaters and appliances
- Direct drop-in replacement for original factory component
- Compact design for easy installation in tight spaces
Application
This thermal fuse is a direct replacement component for Marley Engineered Products electric heaters, baseboard heaters, and related heating appliances. It is installed in series with the heating circuit and acts as a non-resettable safety cutoff. Once tripped, the unit must be replaced to restore operation. Always diagnose and correct the root cause of overheating before installing a new thermal fuse.
Specifications
- SKU: 4520-2030-000
- Brand: Marley Engineered Products
- Type: Thermal Fuse (Thermal Cutoff)
- Trip Temperature: 144°C (291°F)
- Application: Electric heating equipment replacement part







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