MR55DR230-1CA Din rail mounted 230Vac: 5 relay refrigeration controller The MR55 is a din rail mounted, digital controller for “static” or “ventilated” refrigeration units working at positive or negative temperatures. It incorporates all the features needed by modern units such as compressor and full evaporator fan management, “off-cycle” or “active” defrost control. The controller incorporates five relay outputs controlling the compressor, fans, defrost and alarm signaling, as well as an additional programmable output for lighting control. A Real time Clock is incorporated for real time defrost management when required. It is supplied with a single temperature sensor.
The MR54/55 incorporate a Real Time Clock as well as communication possibilities for accurate defrost management and connection to a monitoring system.