PR Series High Pressure Switches The H4556 High Pressure Switches are very small, lightweight units capable of detecting pressure, vacuum or differential pressures. The H4556 offers a number of features and options that make them ideal for many OEM applications. Some of these features include a body design that allows the ports to be rotated in order to fit in small spaces. The electrical terminations can be either solder pins, allo wing the switch to be mounted and soldered directly on printed circuit boards, or wire leads to suit many applications. Model H4556 High Pressure Switch PS Features • Can be used in vacuum, pressure and differential pressure applications • Innovative design offers with minimal hysteresis • Pressure port can accommodate various inlet tubing positions and terminal styles • Industry standard choice for 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

H4556 Specifications Model H4556 Ordering Reference Number Electrical Function Electrical Rating SPST Normally Open Ambient Temperature Pressure Range / Tolerances Maximum Pressure Port Configuration Pressure Setting (Inches H2O) P = Pressure V = Vacuum D = Differential Switch Type Inlet Rotation N = Aligned Rxx = Angle (xx in Degrees) Wire Lead Hose barb for 4.0mm or 5.0mm flexible tubing N = Without Wxx = Wire lead in inches Terminal is available upon request Port Configuration N = 4mm OD tube B = 5mm OD tube Contact Carrying Parts N = Brass Silver Plated G = Brass Gold Plated Connection Type...

PR Series PCB Mount & Negative Pressure Switch The H4557 family of pressure switches is available in pressure, vacuum and differential models. The switches are light weight and can switch moderate current. Due to the non-snap acting design, these pressure switches have minimal hysteresis and the set point is very stable and reliable. Model H4557 PCB Mount & Negative Pressure Switch PS Features • Installation is easy • Controls parts with your pressure system • Able to sense positive or negative pressure • Negligible hysteresis Madison Company • (203) 488-4477 • (800) 466-5383 • Fax (203) 481-5036...

PRESSURE: 1003 in/H2O VACUUM: 401 in/H2O 250 VAC, 0.5 A, INDUCTIVE LOAD; 250 VAC, 2.5 A, RESISTIVE LOAD POINT CLOCKWISE: INCREASES PRESSURE COUNTERCLOCKWISE: DECREASES PRESSURE Model H4557 Media Electrical Function Non-hazardous gas only SPST Normally Open or SPST Normally Closed Electrical Rating Resistive: 2.5 Amp – 250 VAC Inductive: 0.5 Amp – 250 VAC Ambient Temperature -10˚C to 90˚C Pressure Range / Tolerances Pressure: 6 to 1003 in./H2O Tolerance: ±10% Vacuum: -6 to -321 in./H2O Tolerance: ±10% Pressure: 1003 in./H2O Maximum Pressure Vacuum: 401 in./H2O PRESSURE PORT VACUUM PORT Model H4557...

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 construct ion, compact size and enhanced set point integrity. Model H4558 Extended Duty Low Pressure Switch PS Features • Various diaphragm materials are available...

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...

PR Series Pressure Switch The H4559 is a high pressure / low set point pressure switch for applications that see sudden pressure spikes and high pressures which can result in early switch failures. This series has been strengthened to prevent cracking of the base with plated steel and screw machined components in a three-piece design. Modifications to the effective area of the pressure cavity, size of the diaphragm button and diaphragm O-ring are what makes the switch capable of handling sudden pressure changes and high system pressures that are common in applications such as braking, transmission...

RESISTIVE: 6 VDC, 15 A; 12 VDC, 8 A; 24 VDC, 4 A INDUCTIVE: 120 VAC, 1 A; 240 VAC, 0.5 A POINT CLOCKWISE: INCREASE PRESSURE: COUNTERCLOCKWISE: DECREASE PRESSURE Model H4559 Air, motor oils, transmission oils, jet fuels and other similar hydrocarbon media: Water. Factory set from 10 to 400 PSI Pressure Set Point 500 PSI Max. Operating Pressure 2000 PSI Proof Pressure 4000 PSI Burst Pressure Operating Temperature Range -40˚C to 120˚C Direct action, blade contact Switch Type Resistive: 15 Amp – 6 VDC Electrical Rating 8 Amp – 12 VDC 4 Amp – 24 VDC Inductive: 1 Amp – 120 VAC 0.5 Amp – 240 VAC Media...

PR Series Vacuum Pressure Switch The H4560 pressure switch is specifically designed to stand up to extended duty applications. This switch is factory set. It features a fluorosilicone rubber diaphragm for compatibility with a wide variety of fluids. Various terminations are available including a Metric-Pack connector that forms a tight seal when connected. The H4560 vacuum switch benefits from its durable construction, compact size an d enhanced set point integrity. Model H4560 Vacuum Pressure Switch PS Features • Fluorosilicone diaphragm makes it compatible with many media • Many electrical...