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Product Description

N321 PT100 100~240Vdc Temperature controller, 1 relay output, On/off Control.

Novus N321 Electronic Thermostat, PT100 is a great alternative to mechanical thermostats where a more accurate control method is required. These are cost-effective alternatives if PID control is not a requirement.

The N321 temperature controller is used to measure, indicate and control the temperature in many different systems. Accepts 4 sensor types: Pt100, Pt1000, NTC or Thermocouple J. The user can program the control action according to the application: direct action (refrigeration) or reverse action (heating). The internal 10 A relay can directly switch compressors or electrical heaters with ON/OFF control.


– Sensor input: Pt100 (-50 to 300 °C), Pt1000 (-200 to 530 ºC), Thermocouple J (0 to 600 °C) or thermistor (-30 to +105°C)

– IP65 enclosure frontal protection

– Output: Relay SPDT: 1 HP 250 Vac / 1/3 HP 125 Vac (16 A Resisitive)

– Resolution: 0,1 °C from -19,9 to 199,9 °C

– Accuracy: ± 0,5 °C / °F ±1 digit (Pt100 / Pt1000 / Thermistor) and ±2 °C for Thermocouple

– Adjustable hysteresis

– Sampling: 1,5 per second

– Working temperature: 0 to 50 °C

– Power supply: 100-240 Vac (internal) or 12-24 Vac/dc

– Digital communication via RS485 with Modbus RTU protocol (optional)

– Dimensions: 75 x 33 x 75mm


Product Code
N321 PT100

Delivery & Returns


All orders, wherever possible are shipped the same day within the UK as long as it is received before 1 pm.

Orders placed on Friday after 1 pm or the weekend will be dispatched on Monday.


  • Great care is take with each order to ensure they are packed securely to prevent any damage in transit.
  • We can ship orders in several boxes depending on quantity, size or types.
  • Each order is shipped with a packing note inside the box and a carrier shipping label on the outside.

Novus N321 Electronic Thermostat, PT100

Product Code N321 PT100