This product is part of the NEMA Pressure Switches range, an offer of water pump switches. This water pump switch has 2 normally closed, snap action, DPST-DB (double pole single throw, double break) form YY contacts and a pressure setting value of 8psi to 20psi. The pump switch with a pressure sensor size of 30psi (3psi to 10psi), an adjustable range on rising pressure of 9psi to 30psi and approximate adjustable differential of 6psi to 20psi. It is furnished with screw clamp terminals for electrical connections and 0.25inch NPT external conduit bushing - 0.5inch long thread on left for fluid connection. This switch has a diaphragm actuator which can be operated from any position and adjustable differential scale for internal settings. The enclosure is made of polypropylene. It is available in size of 3.58inch (W) x 3.76inch (D) x 3.71inch (H) and weighs 1lb. It is suitable for all types of pumps such as jets, submersible, reciprocating etc. Suitable for pressure controlling or monitoring of water pumps, compressors, agricultural/irrigation water systems, molding presses and injection molders. It is an IP20 and NEMA 1 rated product. This product is certified by CE, CSA and UL. Meets UL 508 and NSF ANSI 61 Annex G standards. Every pressure switch has two operating points, one on rising pressure and one of falling pressure. The operating point on rising pressure is referred to as the TRIP POINT or cut out for pumps and compressors. Power pressure switch rated for the direct control of motors in pump applications. Rugged, robust construction provides a long life and years of uninterrupted, worry-free service. Electromechanical switch to monitor and control pressure conditions for industrial and end-user applications. Power pressure switch is rated for the direct control of motors in compressor applications. The Square D brand water pressure switch has expanded to industry leading Pressure Sensors and Switches.