Water pump pressure switch factory set to 30 to 50 psi. Suitable for use on all types of pumps including jet, submersible and reciprocating. 2 Pole, NEMA Type 1 indoor enclosure, 1/4 in 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. Individually boxed.