Danfoss 077Z7011 Thermostat

The Danfoss 077Z7011 Thermostat is a high-performance Universal Service Thermostat engineered for refrigerator application with automatic defrost cycles. Designed for veteran contractors requiring a direct replacement for A12-712, this 077Z6 constant cut-in thermostat ensures consistent evaporator clearing by maintaining a fixed cut-in temperature of +41°F across all adjustment positions. This mechanical cold control features a 84-inch capillary tube and a straight sensor, providing the necessary reach and sensitivity for precise thermal feedback in reach-in coolers and light commercial refrigeration units.

The 077Z7011 offers three distinct operating profiles: a warm position with a +29.5°F cut-out, a middle position with a +23.5°F cut-out, and a cold position reaching +17°F. This thermal range, combined with its 16A/96A contact rating, makes it a rugged solution for compressor control in demanding environments. Built with an enclosed brake device (EBD), it is compatible with modern isobutane and propane (R600a/R290) systems, ensuring safe operation and long-term reliability in the field.

• Universal Compatibility: Serves as a Danfoss service kit replacement for A12-712, A12-700, A12-701, and A12-1560 models.
• Automatic Defrost Logic: The constant cut-in operation mode at 41°F prevents ice buildup by ensuring the evaporator is clear before the next cycle.
• Durable Construction: Rated for over 100,000 cycles at full load, reducing the frequency of frustrating call-backs.
• Extended Reach: The 84" capillary length provides flexibility for various cabinet sizes and sensor placements.
• Safe for Natural Refrigerants: Integrated EBD technology allows for safe installation in systems using flammable refrigerants.

What does constant cut-in mean for this thermostat?
In constant cut-in operation, the Danfoss 077Z7011 always waits until the sensor bulb reaches +41°F before starting the compressor. This ensures that any frost on the evaporator has melted, making it ideal for refrigerator automatic defrost setups.

Is the Danfoss 077Z7011 compatible with R290 systems?
Yes, this 077B series thermostat includes an enclosed brake device, which is a critical safety feature for systems utilizing hydrocarbon refrigerants like R290 or R600a.

Can I use this for a freezer application?
This specific model is calibrated for refrigerator applications with a minimum cut-out of +17°F. For low-temperature freezer applications, a thermostat with a lower cut-out range, such as the 077Z7014, would be required.

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.