Controllers for cooling applications 900220.021

Technical data

  • Housing dimension ST501 Front: 106x68mm
  • Power supply 230V AC
  • Switching inputs none
  • Number of outputs 4
  • Sensor type Multi resistance
  • ST-Bus available No
  • Software 12

Wiring diagram

Dimensional drawing

Product description

The microprocessor-controlled controller ST501-KU3KA.12P consists of a service and a separate power pack plate and is used for thermostatic temperature regulation in simple refrigerating plants. It is supplied with 230V AC and has four relay outputs as well as an exit for a DC voltage fan.
The relays can be used for different functions, e.g. for a compressor, a defroster, an alarm relay, etc.. (see parameters U1-U4). The two resistance sensors seize the refrigerating chamber temperature and the evaporator temperature.

Data sheet             Installation instructions

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