Paragon A877-20 Timer

The Paragon A877-20 is a high-performance multi-circuit defrost timer specifically engineered for commercial refrigeration systems requiring precision even-hour defrost cycles. Designed to integrate seamlessly with the RM Series Program Module, this 10-amp control provides technical flexibility for contractors managing complex evaporator configurations. This 240V defrost timer features a heavy-duty synchronous industrial motor with a sealed, permanently lubricated gear train, ensuring long-term reliability in demanding environments. It supports defrost initiation adjustable from 1 to 12 cycles per day with a 2-hour minimum interval between operations, while the integral solenoid termination allows for instantaneous transfer when triggered by a remote thermostat or pressure switch.

Field-serviceable and robust, the Paragon A877-20 utilizes two SPDT snap switches and 3/16-inch male push-on terminals for secure electrical connectivity. The mechanical defrost termination is finely adjustable from 6 to 106 minutes in 1-minute increments, offering the exact calibration needed to prevent ice build-up without excessive heat load. This even hour module 240V is the standard choice for technicians looking for a 66DC12 cross-reference replacement that maintains circuit mode integrity across the refrigeration system.

• Solenoid Termination: Provides immediate defrost termination upon closure of an external pilot device, maximizing energy efficiency.
• Broad Compatibility: Directly supports RM Series frame modules with 4 or 8 circuits, allowing for scalable system control.
• Precise Increments: Mechanical backup termination is adjustable in 1-minute steps for exact evaporator clearing.
• Rugged Construction: Features a heavy-duty synchronous motor and UL/CSA recognized components for industrial applications.
• Flexible Programming: Capable of managing up to 12 defrost cycles per day to accommodate varying humidity and load conditions.

Is the solenoid mandatory for operation?
No, the solenoid termination is optional; the unit includes a standard mechanical backup timer adjustable up to 106 minutes.

Can I replace just the program module in the field?
Yes, the design allows for the removal and replacement of individual RM Series program modules without disturbing the drive motor or other circuit settings.

What is the difference between even-hour and odd-hour modules?
Even-hour modules like the A877-20 are timed to initiate on even hours of the dial, which is critical when synchronizing or staggering multiple units to manage total electrical demand.

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.