This Pumptrol FSG2J24BP 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 customers. The FSG2J24BP has a 40 PSI to 60 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 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.