Paragon 8045-20 Defrost Timer

The Paragon 8045-20 Defrost Timer is a critical electromechanical control for commercial refrigeration equipment, specifically engineered for electric heat defrosting and compressor off-cycle systems. This 240V defrost timer features a robust synchronous motor and a high-capacity 40-amp, 2 HP switch rating, ensuring reliable handling of heavy inductive loads in walk-in freezers and reach-in coolers. The commercial refrigeration timer is housed in a heavy-duty NEMA-1 steel enclosure with multiple knockouts, designed to withstand the rigorous environments of a professional kitchen or warehouse.

For precise system management, the Paragon 8045-20 supports iterative time-initiated, time-terminated cycles, allowing for 1 to 6 defrost occurrences per day with a minimum 4-hour interval between operations. The duration is adjustable from 4 to 110 minutes in 2-minute increments, providing the granular control needed to prevent ice build-up without excessive heat gain. Technicians will appreciate the positive slider bar switch design, which creates a self-cleaning action for the contacts to maintain electrical integrity over thousands of cycles.

• High Amp Rating: Rated for up to 40 Amps and 2 HP, making it compatible with most heavy-duty electric defrost heaters and compressor loads.
• Installation Versatility: Features a 208-240V AC operating range, fitting a wide variety of commercial power standard configurations.
• Rugged Construction: The permanent heavy-duty steel enclosure protects the synchronous drive motor and mechanical components from physical damage.
• Self-Cleaning Contacts: The wiper-action slider bar mitigates carbon build-up and surface contaminants, ensuring consistent voltage across terminals 1, 3, and 4.

How do I set the defrost frequency?
Use the included pins (trippers) to set the start times on the 24-hour dial. Ensure at least 4 hours remain between active pins to allow for proper pull-down and recovery.

Is the Paragon 8045-20 compatible with temperature termination?
The 8045-20 is a time-terminated model. If your system requires temperature or pressure termination (X terminal sensing), you should verify if the 8145 series is required for your specific wiring schematic.

Can I use this for 120V applications?
No, this specific model (8045-20) is designed for a 240V timing motor. Operating this on a 120V circuit will cause the motor to run slow or fail to turn the dial.

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.