White Rodgers 775-1 Control

The White Rodgers 775-1 is a professional-grade attic fan control designed to regulate power to ventilation systems based on ambient temperature. Engineered for line voltage applications, this thermostat operates with a 60-120F temperature range and a fixed 10F differential, ensuring efficient heat dissipation without excessive motor cycling. As a direct replacement for F535 models, the 775-1 provides a seamless upgrade path for legacy installations. Featuring close-on-rise switch action, it triggers the exhaust fan as attic temperatures climb, protecting structural integrity and reducing the cooling load on the HVAC system. The integrated thermal limiter acts as a critical safety cutoff, opening the circuit if temperatures exceed safe operating parameters. This 770 series dual purpose control is rated for 9.0 Amps at 120 VAC, making it a reliable solution for residential and light commercial power attic ventilators requiring precise thermal management.

• Direct Compatibility: Built as the industry-standard direct replacement for F535 and similar legacy controls.
• Precision Thermal Control: The fixed 10F differential prevents rapid on/off cycling, extending the lifespan of the fan motor.
• Enhanced Safety: Includes a thermal limiter that automatically opens the circuit at 183°F to prevent overheating.
• Versatile Installation: Capable of handling 120V attic fan loads and mountable in multiple positions for flexible mechanical configurations.
• Contractor Grade: Utilizing an enclosed diaphragm design, this switch is resistant to the vibration and shock typical of high-velocity ventilation units.

Is the 775-1 compatible with 240V systems?
This specific model is primarily rated for 120 VAC applications with a 9.0 Amp full load rating. Always verify your specific motor's voltage and amperage requirements before installation.

Can I adjust the differential on this controller?
No, this unit features a fixed 10-degree differential. For applications requiring an adjustable differential, a different series of White Rodgers controls would be necessary.

Does this unit replace the old F535 series?
Yes, the 775-1 is the manufacturer-designated replacement for the F535 attic fan control, utilizing the same close-on-rise logic and mounting footprints.

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.