About Pressure Switches
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Manual-Reset Pressure Switches
Used as a safety control, these switches must be manually reset each time they hit the set pressure, so you can inspect equipment before it restarts. When pressure rises too high, they activate alarms or stop processes. Push the button on the top to reset. Switches are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed).
NEMA 4X and IP66 rated, these switches resist corrosion and seal out dust and water from washdowns and weather. All meet at least one American, Canadian, or European safety standard.
For technical drawings and 3-D models, click on a part number.
| Setpoint, psi | Max. Continuous Pressure, psi | Max. Short-Term Pressure, psi | Accuracy | Max. Switching Current  | Process Temperature Range, ° F | Connection Material | For Use With | Environmental Rating | Each | |
Screw Terminals | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
1/4 NPT Female Pipe Connection | ||||||||||
| 2 1/4-15 | 15 | 500 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 0000000 |
| 4 1/2-30 | 30 | 500 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
| 9-60 | 60 | 500 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
| 15-100 | 100 | 1,000 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
| 30-200 | 200 | 1,000 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
| 60-400 | 400 | 2,400 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
| 90-600 | 600 | 2,400 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
| 150-1,000 | 1,000 | 12,000 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
| 450-3,000 | 3,000 | 12,000 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66; NEMA 4X | 0000000 | 000000 |
Differential Pressure Switches for Liquids
Detect the difference in pressure between two points. For instance, these switches can indicate a filter is clogged in a pump or cooling system. When the differential pressure reaches your setpoint, they turn equipment on and off, activate automated controls, or signal alarms. They are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed). All meet at least one safety standard.
NEMA 4 and NEMA 4X rated switches can be used in dirty and wet areas exposed to washdowns and weather. NEMA 4X rated switches also have increased protection against corrosion, similar to 304 stainless steel. NEMA 13 rated switches can be used in dirty, damp, and oily areas. IP66 rated switches protect against dust and washdowns.
For technical drawings and 3-D models, click on a part number.
| Setpoint Range | Approximate Difference Between Setpoint and Reset Point | Max. Input Pressure, psi | Accuracy | Max. Switching Current | Process Temp. Range, °F | Connection Material | For Use With | Specifications Met | Each | |
Screw Terminals—1/4 NPT Female Pipe Connection | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
NEMA 4X, NEMA 13, IP66 | ||||||||||
| 4.5-30 in. of H2O | 2 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 0000000 |
| 9-60 in. of H2O | 2.5 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 15-100 in. of H2O | 4 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 22.5-150 in. of H2O | 6.5 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 2.25-15 psi | 3.5 psi | 500 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 4.5-30 psi | 3.5 psi | 500 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 9-60 psi | 4.5 psi | 500 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 15-100 psi | 15.5 psi | 1,000 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
Adjustable-Reset Vacuum Switches
Control the amount of vacuum change between when these switches activate and deactivate by adjusting when they reset. Also known as adjustable deadband and differential switches, you can set the reset point anywhere within the setpoint range. Use them to power equipment, signal controls, or trigger alarms when they reach the set vacuum. They’re single pole, double throw (SPDT) and can either turn one circuit from off to on (normally open) or on to off (normally closed). All meet safety standards.
All protect against some corrosion. NEMA 4X and IP66 rated switches can be used in dirty and wet areas exposed to washdowns. NEMA 4X switches also stand up to weather and have increased protection against corrosion, similar to 304 stainless steel.
For technical drawings and 3-D models, click on a part number.
| Setpoint, in. of Hg | Approximate Difference Between Setpoint and Reset Point | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Accuracy | Maximum Switching Current | Process Temperature Range, °F | Connection Material | For Use With | Environmental Rating | Each | |
Screw Terminals | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1/4 NPT Female Pipe Connection | |||||||||||
| 24-6 | Adjustable | 11.7 | 250 | ±1% | 10 A @ 125 V AC 10 A @ 250 V AC 250 mA @ 250 V AC 500 mA @ 125 V DC | 20° to 300° | 316L Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | NEMA 4X, IP66 | 0000000 | 0000000 |
Pressure and Vacuum Switches
Because these switches work with both positive and negative (vacuum) pressures, you can use them in applications that span both. For example, these switches can turn on a light when they reach the setpoint to indicate which pressure is flowing. They’re also often used to trigger automated controls and activate alarms. These switches are single pole, double throw (SPDT) and can either turn one circuit from off to on (normally open) or from on to off (normally closed).
NEMA 4X and IP66 rated, they’re dust tight and protected from washdowns and corrosion. All are UL and C-UL listed, CSA and CSA-US certified, and CE marked, so they meet U.S., Canadian, and European safety standards.
For technical drawings and 3-D models, click on a part number.
Setpoint | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pressure, psi | Vacuum, in. of Hg | Approximate Difference Between Setpoint and Reset Point, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Accuracy | Maximum Switching Current | Process Temp. Range, °F | Connection Material | For Use With | Environmental Rating | Each | |
Screw Terminals | ||||||||||||
1/4 NPT Female Pipe Connection | ||||||||||||
| 0-15 | 30-0 | 1.5 | 15 | 250 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 250 V DC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66, NEMA 4X | 0000000 | 0000000 |
| 0-30 | 30-0 | 2.25 | 30 | 250 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 250 V DC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66, NEMA 4X | 0000000 | 000000 |
| 0-60 | 30-0 | 4 | 60 | 250 | ±1% | 15 A @ 125 V AC 15 A @ 250 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 250 V DC | 20° to 300° | 316 Stainless Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water | IP66, NEMA 4X | 0000000 | 000000 |