Model: N321R / N323R / N323TR
N320R Refrigeration Thermostats with Automatic Defrost
The N320R refrigeration series is engineered for precise refrigeration control and defrost management in cold stores and freezers. The N323R manages compressor, defrost heaters, and evaporator fans with dual NTC temperature probes (chamber and coil), while the N323TR adds a real-time clock for scheduling defrost cycles by day and hour.
Key Features
- Automatic defrost by compressor shutdown, electric heating resistance, or hot gas reverse cycle
- Monitors 2 NTC temperature sensors (room temperature and evaporator coil defrost termination)
- Programmable defrost intervals, duration, and drip time
- N323TR model features real-time clock (RTC) for weekly scheduled defrost routines
- Direct drive relay output capable of switching compressors up to 1 hp
Technical Specifications
Models Comparison
Available Models & Configurations
| Model | Description |
|---|---|
| N321R | Refrigeration controller with 1 relay and voltage protection |
| N323R | Refrigeration controller with 3 relays for compressor, defrost, fan |
| N323TR | Refrigeration controller with 3 relays + Real Time Clock (RTC) |
Inquire About N321R / N323R / N323TR
Need pricing, validation documentation (IQ/OQ), or custom application sizing? Contact our bioprocess engineering team.
Applications
- Pharmaceutical walk-in freezers and stability cold rooms
- Vaccine distribution storage units
- Air conditioning and commercial refrigeration cabinets
Calibration & Validation
ISO/IEC 17025 factory calibration certificates and IQ/OQ documentation packages are available on request.
Include in enquiryDocumentation
Technical datasheets and user manuals are available from our engineering team upon request.
Request DocumentationRelated Products
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