Water pump pressure switch with 20 - 40 psi cut in/cut out. Suitable for use on all types of pumps including jet, submersible, and recriprocating. 2 Pole, NEMA 1 enclosure, 1/4" NPSF internal pressure connection, diaphragm actuated, UL/CSA Listed, RoHS compliant, NSF61-Annex G certified, Includes low pressure cut-off to stop pump in the event of run dry or a line break. Individially boxed.