PR Series Extended Duty Low Pressure Switch The H4558 pressure switch is specifically designed to stand up to extended duty applications. The switch is factory set but capable of field adjustment. A standard feature is a polyimide diaphragm for compatibility with a wide variety of fluids. The switch also offers various terminations including a Metric-Pack connector that forms a tight seal when connected. Design benefits include durable construction, compact size and enhanced set point integrity. Model H4558 Extended Duty Low Pressure Switch PS Features • Various diaphragm materials are available to make it compatible with many media • Many electrical terminations are available • Adjustment screw to enable fine tuning if required • Tough, versatile choice for many OEM applications • UL Approved Madison Company • (203) 488-4477 • (800) 466-5383 • Fax (203) 481-5036 • [email protected] • www.madisonco.com © Copyright Madison Company – 6/12

OTHER SIMILAR HYDROCARBON MEDIA, WA 750 PSI for 0.5 to 24 PSI RANGE 1250 PSI for 25 to 150 PSI RANGE RESISTIVE: 6 VDC, 15 A; 12 VDC, 8 A; 24 VDC, 4 A INDUCTIVE: 120 VAC, 1 A; 240 VAC, 0.5 A POINT Model H4558 Air, motor oils, transmission oils, jet fuels and other similar hydrocarbon media: Water. Factory set from 0.5 to 150 PSI Pressure Set Point 150 PSI for 0.5 – 24 PSI set point range Max. Operating Pressure 250 PSI for 25 – 150 PSI set point range 500 PSI Proof Pressure 750 PSI for 0.5 – 24 PSI set point range Burst Pressure 1250 PSI for 25 – 150 PSI set point range Operating Temperature Range...