Description
The Marley Engineered Products 4520-2027-000 is a 150°F Manual Reset (M/R) Limit Switch engineered to deliver dependable overheat protection for electric heating equipment. When the monitored temperature reaches the 150°F trip point, the switch opens the circuit and locks out operation until a technician manually resets the device — preventing nuisance cycling and ensuring that the root cause of the overtemperature condition is addressed before the heater is returned to service.
Key Features
- 150°F (65.6°C) fixed trip temperature for precise overheat protection
- Manual reset (M/R) design requires deliberate technician intervention before restart
- Direct OEM replacement for compatible Marley Engineered Products electric heaters
- Helps protect heating elements, wiring, and surrounding structure from thermal damage
- Compact form factor for straightforward installation in tight heater enclosures
Application
This limit switch is a genuine Marley Engineered Products replacement component designed for use in electric baseboard heaters, unit heaters, and other Marley heating equipment that require a 150°F manual reset safety cutout. Always verify compatibility with your specific heater model before installation.
Why Choose a Manual Reset Limit Switch?
Unlike automatic reset limit switches, a manual reset device will not allow the heater to restart on its own after a high-temperature event. This forces an inspection of the unit, reducing the risk of repeated overheating cycles that can degrade components or create a fire hazard.
Product Details
- Brand: Marley Engineered Products
- Part Number / SKU: 4520-2027-000
- Switch Type: Manual Reset (M/R) Limit Switch
- Trip Temperature: 150°F
- Application: Electric heater overheat protection
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