This Pumptrol FSG2J21M4CP electromechanical pressure switch is the most trusted brand in residential, commercial and industrial pumping applications. For over 75 years, Square D pressure switches continue to meet the needs of our customers. This switch has a 30 PSI to 50 PSI pressure setting range activates an electrically driven water pump within a power circuit when the adjustable rising and falling thresholds are reached. The NEMA 1 enclosure has a 1/4 inch NPSF internal fluid connection and screw clamp terminals. The switch works with a 1.5 HP or less pump. The adjustable differential range is 15 psi to 30 psi and the cut-out range is 20 PSI to 65 PSI. The low-pressure cut-off (auto-start-off) operates at approximately 10 psig below the cut-in and will turn off the pump. The enclosure is National Electrical Manufacturers Association (NEMA) Type 1 and Ingress Protection (IP) 20 rated. The switch is Underwriters Laboratory (UL) Listed and Canadian Standards Association (CSA) Certified.

If system pressure is lost for any reason, a low water condition for example, the automatic lower pressure/water cut-off feature will open the contacts, turning off the pump

Universally accepted and recognized design is easy to wire, features drift proof cut-in and cut-out settings and has visible vertical contacts which are easy to inspect

Switch is UL listed and Canadian Standards Association (CSA) certified

FSG2J21M4CP activates an electrically driven water pump within a power circuit when the adjustable rising and falling thresholds are reached

Pressure switch is RoHS compliant, NSF certified to meet federal low lead requirements

Low pressure cutoff M4

30 to 50 PSI

Captive cover screw

Single and 3 phase rated

Can be mounted in any position