Danfoss Type MP54 and MP55 Pressure Controls
MP54 and MP55 oil differential pressure controls are used as safety switches to portect refrigeration compressors against low lubricating oil pressure. If the oil pressure fails the oil differential pressure control stops the compressor after a certain time period.
MP 54 has a fixed differential pressure setting. It also incorporates a thermal time relay with a fixed release time setting. MP 55 and 55A have adjustable differential pressure and are available both with and without thermal time relay