Paragon
Paragon 8143-20 Defrost Control Timer 2NO/1NC 120-240VAC 40A
A defrost control timer providing up to six daily cycles with adjustable defrost durations from four to 110 minutes and a 40-amp rating at 120 to 240 volts AC
- Controls defrost cycles up to 6 times daily
- Handles 40 A at 120-240 VAC for heavy loads
- Adjustable defrost duration from 4 to 110 minutes
- 2 NO / 1 NC contacts suit multiple wiring schemes
- Steel enclosure protects timer in harsh environments
Defrost timer for refrigeration systems
The Paragon 8143-20 is a defrost control timer designed for commercial refrigeration equipment. It operates on 120 to 240 VAC supply voltage and handles up to 40 amps through its 2 NO/1 NC contact configuration. This unit suits technicians maintaining walk-in coolers or freezers that require scheduled defrost cycles.
Wiring fits standard enclosures
Installation uses a steel enclosure with temperature or pressure termination points for secure connections. The timer allows a maximum of six on/off cycles per day, so programmes needing more frequent intervals cannot use this model. Defrost duration adjusts from 4 to 110 minutes to match coil requirements.
Steel enclosure handles continuous duty
The steel housing protects internal components during sustained operation in humid, cold environments. Contacts rated for 40 amps maintain reliability across repeated daily cycling without overheating. Defrost initiation timing stays consistent over long service periods in demanding refrigeration applications.
Highlights
- Controls defrost cycles up to 6 times daily
- Handles 40 A at 120-240 VAC for heavy loads
- Adjustable defrost duration from 4 to 110 minutes
- 2 NO / 1 NC contacts suit multiple wiring schemes
- Steel enclosure protects timer in harsh environments
Specifications
| Brand | PARAGON |
|---|
Questions about this item
How do I verify the 8143-20 defrost timer is cycling correctly after installation?
Watch the compressor and defrost heater during a cycle; the timer should allow 4 to 110 minutes of defrost time and complete up to 6 on/off cycles per day at 208/240V AC.
What comes with the Paragon 8143-20 and what must I supply separately?
The unit includes the steel-enclosed timer with 2 NO/1 NC contacts rated for 40 A; you must provide the wiring, mounting hardware and a compatible temperature or pressure termination device.
Which voltage rating should I select for a 240 V commercial freezer application?
Choose the 208/240V AC version; it is rated for 40 A and supports the 4 to 110 minute defrost window required for typical commercial units.
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