The Danfoss 060-201491 is a pressure switch that has SPDT contacts that allow open or close switching action during pressure rise or fall.  It features a pressure level indicator with a 115 to 465 psi regulating range and 25 to 85 psi differential pressure.  UL-listed.

The KP 5 high-pressure switch is suitable for refrigeration and air conditioning systems such as compressors and fans in air-cooled condensers.  The unit is used as a safety device to prevent excessive high discharge pressure.  It also provides ultra-short bounce time with a snap-action function that minimizes deterioration.

The 060-201491 is easy to install with an integral 1/4" flare connection size and pressure wire connectors for electrical wiring.
Check out the available accessories:
 

Part No.	Description	Part No.	Description
060-008666	Cover	060-105566	Wall Bracket
060-109766	Top Cover	060-105666	Angle Bracket
060-003166	Protective Cap	060-007066	Capillary Tube 0.5 m
060-033066	IP55 Enclosure	060-017166	Capillary Tube 39"
017-437066	Sensor Packet Brass Well	060-007166	Capillary Tube 39"
017-436966	Sensor Pocket S.S. Well	060-007266	Capillary Tube 59"