PID-Temperature Controllers - Selec CH403 Economical Cooling Temperature Controller


  • 3 digit 7 segment LED
  • LED status indicator: Set point lock, Defrost, Relay ON, Alarm ON
  • °C / °F selectable
  • Defrost management
  • High & Low temperature alarm
  • Upto 20A relay output
  • Compact size and Easy to use

Ordering Codes

Part No Control Output Alarm Output Supply Voltage
CH403-1 10A Relay 12A DC SSR, 10mA 85 to 270V AC/DC
CH403-2 20A Relay - 85 to 270V AC/DC
CH403-3 10A Relay 5A Relay 85 to 270V AC/DC

The Selec CH403 Cooling controllers are designed for management of refrigeration and food processing applications. The controllers have 1 NTC inputs for ambient and defrost temperatures and 2 relay outputs for control purposes. The controllers feature a simple user interface and are housed in a compact panel mounting enclosure. The CH403 controllers are powered from 85 to 270V AC/DC.