Danfoss Pressure Switch, Type KP 37, 58 - 300 psi
KP pressure controls can be used as safety switches against too low a suction pressure and/or too high a discharge pressure in refrigeration and air conditioning systems they can also be used to start-stop compressors and fans for air-cooled condensers. They are available in both single and dual versions and include a 1-pole double throw (SPDT) switch.