Model: 09470

Special Features:

Indoors / outdoors nema 4 conduit hub required, style - rectangular, dimension - 4-3/4in. (120.7mm)wd. X 2-1/4in. (57.2mm)d. X 4-3/8in. (111.1mm)h.; pressure connection 1/2in. Brass npt male; cover - die-cast w/ textured red powdercoat finish; base - plated steel; electrical connection - 7/8in.(22mm) diam. Hole through base; wrench flats - 1-5/8in. (41.3mm) across flats; factory adjustment - operates on pressure increase at 6 +/- 1 psi (41 +/- 6.9kpa), decrease at 5 +/- 1 psi (34 +/- 6.9kpa); w/ available adjustment to operate on pressure between 4 and 20 psi (27 and 138 kpa) w/ caution do not modify factory setting when switch is used as alarm pressure switch; max. Differential - 1 psi (6.9 kpa), max. System pressure - 250 psi (1.723 kpa); switch contact - 1 single pole double throw (spdt) snap action contact switch, 15.0 amps at 125/250 vac, 2.5 amps at 30 vdc; trips municipal fire boxes, signal pump start-up; tamper resistance cover w/ special key for removal

Properties:

A switch which is actuated by changes of pressure (vacuum) on any gas or liquid and by changes in ambient temperature. The contacts for the temperature and pressure sensitive elements may be common.