80323R3330 NOVUS AUTOMATION

N323R NTC Defrost RS485 Temperature controller, 3 relays The N323R is a specialized refrigeration controller designed for commercial cooling applications, featuring dual NTC temperature sensors for comprehensive system monitoring and three independent relay outputs for complete equipment control. This advanced controller simultaneously monitors both ambient air temperature and evaporator coil temperature, enabling precise defrost optimization and efficient compressor operation. A key benefit is its dedicated output configuration—controlling the compressor, defrost heater, and evaporator fan independently—which ensures optimal performance while preventing ice buildup and equipment damage. With programmable defrost cycles, adjustable hysteresis, and configurable minimum ON/OFF times, the N323R protects compressors from short cycling and extends system lifespan. Available in 24V DC and RS485 Modbus communication models, this robust controller features an IP65 front panel for reliable operation in demanding refrigeration environments, making it ideal for commercial display cases, cold rooms, and walk-in coolers.

Dual Temperature Monitoring: Two independent NTC inputs monitor both ambient air and evaporator temperatures for optimal defrost control and system efficiency.

Three Dedicated Outputs: Separate relays for compressor, defrost heater, and evaporator fan provide complete refrigeration system management.

Advanced Defrost Optimization: Programmable defrost cycles with adjustable durations prevent ice buildup while minimizing energy consumption.

Compressor Protection: Configurable minimum ON/OFF times prevent short cycling and extend compressor lifespan.

Flexible Communication: Optional RS485 Modbus interface enables integration with building management systems for remote monitoring.

Universal Power Options: Standard 100-240V AC/DC and optional 24V DC models accommodate diverse installation requirements.