Description
The Marley Engineered Products 4520-2017-000 is a 300°F manual reset (M/R) limit switch engineered to provide dependable high-limit safety protection for electric heating equipment. When the monitored temperature reaches the 300°F setpoint, the switch opens the circuit and locks out the heating element — requiring a manual reset before the unit can resume operation. This fail-safe design helps prevent equipment damage and potential fire hazards caused by overheating conditions.
Key Features
- 300°F (149°C) fixed high-limit temperature setpoint
- Manual reset (M/R) operation — requires deliberate technician intervention after a trip event
- Designed as a safety cutout for electric baseboard heaters, unit heaters, and other Marley Engineered Products heating equipment
- Provides reliable over-temperature protection to safeguard heating elements and surrounding components
- Direct OEM replacement part for compatible Marley Engineered Products equipment
- Compact design for straightforward installation in existing equipment
Application
This limit switch is a genuine Marley Engineered Products replacement component intended for use in electric heating systems where high-limit safety control is required. The manual reset function ensures that a qualified technician must inspect and clear the fault condition before the heater is returned to service, adding an important layer of safety to commercial and residential heating installations.
Product Specifications
- Brand: Marley Engineered Products
- Part Number: 4520-2017-000
- Temperature Rating: 300°F
- Reset Type: Manual Reset (M/R)
- Component Type: High-Limit Safety Switch
