The IR33 smart refrigeration controllers are designed specifically for the refrigeration installer as they enable selection from a range of pre-loaded applications, eliminating the need to program the controller parameters.The controller then just needs to be wired up and installed in the panel. The controllers have up to 3 NTC or PTC inputs and versions are available which have 1, 2, 3 or 4 relay outputs for control of the compressor, active defrost, evaporator ventilation fan and auxiliary output. The 4 relay version also incorporates a real time clock and HACCP function. The controllers are housed in a compact panel mounting enclosure and are powered from 115 to 230Vac. All versions can be connected to a network for monitoring and programming using the optional RS-485 serial interface.

No programming required
4 pre-loaded configurations
NTC or PTC thermistor probe inputs
Up to 4 relay outputs
16A compressor output
Real time clock and HACCP function
Infrared receiver and buzzer
115 to 230Vac powered
RS-485 serial connection
IP65 enclosure
Plug-in terminals
Front panel mounting system
Accessory: RS485 serial communication interface, stock-no. 745-8005

The 240/24 V ac power supply transformer is used for powering Tempatron low voltage timers and controllers. The transformer is resin encapsulated and has a 3 VA burden rating, enabling it to power other low voltage monitors, alarms or control circuits.

240/24 V ac supply voltage
3 VA burden rating
Surface mounting
IP20 protection