Paragon
Paragon 8145-20 Defrost Timer Contactor 208/240V AC 40A SPDT
A defrost control timer with 208/240V AC, 40A SPDT contacts and 1 to 6 daily cycles adjustable from 4 to 110 minutes
- Defrost cycles adjustable from 4 to 110 minutes in 2-minute increments
- 40 A SPDT contact handles heavy compressor loads at 208/240 V AC
- Steel enclosure protects timer mechanism in demanding refrigeration environments
- Schedules 1 to 6 defrost cycles daily with minimum four-hour spacing
- Termination by temperature or pressure input for flexible system integration
Paragon 8145-20 Defrost Timer Contactor
The Paragon 8145-20 is a defrost timer control designed for refrigeration systems requiring scheduled defrost cycles. It operates on 208/240V AC power and carries a 40 A SPDT contact rating for direct load switching. The unit provides 1 to 6 on/off cycles per day with a minimum four-hour interval between cycles. Defrost duration adjusts from 4 to 110 minutes in two-minute increments. A steel enclosure protects the internal mechanism in commercial environments.
Voltage and wiring check before installation
Confirm the supply voltage at the installation site matches the 208/240V AC rating of the timer. Verify the load current does not exceed the 40 A SPDT contact capacity for the connected compressor or heater circuit. Ensure the termination method is compatible with temperature or pressure initiation as specified for this model. Check that the enclosure mounting suits the intended location and ambient conditions.
Sustained operation and cycle reliability
The timer is built for repeated daily cycling with a minimum four-hour separation between successive defrost events. Adjustable defrost periods from 4 to 110 minutes allow matching the cycle length to the specific evaporator load. The steel enclosure helps maintain consistent performance in the temperature and humidity conditions typical of walk-in coolers and freezers. The SPDT contacts are rated for continuous 40 A duty during each defrost interval.
Highlights
- Defrost cycles adjustable from 4 to 110 minutes in 2-minute increments
- 40 A SPDT contact handles heavy compressor loads at 208/240 V AC
- Steel enclosure protects timer mechanism in demanding refrigeration environments
- Schedules 1 to 6 defrost cycles daily with minimum four-hour spacing
- Termination by temperature or pressure input for flexible system integration
Specifications
| Brand | PARAGON |
|---|
Questions about this item
Does the Paragon 8145-20 defrost timer contactor include any wiring accessories or mounting hardware in the box?
The unit is supplied as the timer contactor itself; wiring connectors and mounting hardware are not included and must be sourced separately.
How do I decide between the 208 V AC and 240 V AC ratings on the Paragon 8145-20?
Both voltages are supported by the same device; choose the rating that matches your supply — 208 V for three-phase derived circuits or 240 V for single-phase mains.
What does the 40 A SPDT contact rating mean for a real refrigeration compressor circuit?
The single-pole double-throw contacts can switch a compressor load up to 40 A at 208/240 V AC, allowing direct control of most commercial defrost heaters or compressor contactors.
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