The Robertshaw 5225-059 is a professional-grade high-limit safety control engineered for demanding commercial cooking and industrial heating applications. This LCH Series manual reset limit control is factory-calibrated to a fixed trip point of 450°F (232°C), providing critical over-temperature protection for deep fryers, ovens, and specialty appliances. It features a 36-inch capillary length and a durable nickel-plated copper sensing bulb measuring 5/16" x 3-5/8", ensuring rapid thermal response and corrosion resistance in harsh kitchen environments. The SPST switch action (break on temperature rise) is rated for 30 Amps at 125-480V AC, making it a robust replacement for a wide range of OEM safety circuits. Designed with a negative biased power element, this Robertshaw thermostat automatically interrupts power if the hydraulic sensing fluid is lost, fail-safing the system. As a manual reset limit switch, it requires technician intervention to restart the appliance after an overheat event, facilitating necessary safety inspections before resuming operation. Key Benefits Precision Thermal Safety: Fixed 450°F calibration prevents oil flash fires and equipment damage in high-output commercial fryers. Industrial Durability: The nickel-plated bulb and capillary assembly resist oxidation and chemical breakdown from cooking fats and industrial fluids. Fail-Safe Diaphragm: Utilizes a negative biased power element that opens the circuit if the capillary is damaged or loses its charge. High Electrical Capacity: Rated for up to 30A resistive loads, supporting high-wattage heating elements without the need for additional contactors in many configurations. Flexible Installation: A 36-inch capillary and standard mounting profile allow for versatile placement within diverse chassis designs. Common Questions How do I reset the Robertshaw 5225-059 after a trip? This is a manual reset model. Once the temperature at the bulb drops approximately 50°F below the 450°F setpoint, you must firmly depress the red reset button. It is a "trip-free" design, meaning the contacts will not close if the over-temperature condition still exists. Can this limit control be used in gas applications? While often used in electric equipment, this model is compatible with gas fryer systems when wired to interrupt the millivolt signal or power to the gas valve. Always verify the wiring schematic of the specific appliance to ensure the SPST switch action aligns with your safety circuit requirements. What happens if the capillary tube is kinked or broken? The 5225 Series is designed to fail open. If the hydraulic integrity is compromised through a break or leak in the 36" capillary, the switch will automatically trigger a limit-trip state, cutting power to the load for safety. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
