Maximum Horsepower Maximum Horsepower |
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Maximum Switching Current Maximum Switching Current |
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Wire Connection Type Wire Connection Type |
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| Screw Terminals | Wire Leads |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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(Web) Maximum Horsepower (Web) Maximum Horsepower |
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Housing Material Housing Material |
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About Pressure Switches
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About Sump, Water-Removal, Condensate, and Submersible Pumps
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Pressure Switches for Water Pumps
Activate or deactivate your electric water pump based on water pressure. These switches turn your pump off when pressure increases to the set pressure and on when pressure drops to the reset pressure. All are NEMA rated to stand up to some corrosion, but they shouldn’t be used outdoors. UL listed and CSA certified, switches meet American and Canadian safety standards.
Use switches with a manual on/off lever to turn off your system for maintenance or for long periods of time. When you turn them back on, they’ll resume pump control and remember their pressure setpoints.
Switches with low-pressure cutoff turn your pump off if water pressure dips 10 psi lower than the reset pressure. This stops the system from pumping when there’s an issue in your line, such as a leak or break, to avoid flooding or other damage. These switches will also resume pump control with their previous setpoints when turned back on.
Switches with pressure surge protection won’t activate during brief periods of high pressure. They’re often used in systems that have frequent pressure spikes.
Max. Horsepower | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Setpoint, psi | Reset Point, psi | Approximate Difference Between Setpoint and Reset Point, psi | Max. Continuous Pressure, psi | Accuracy | AC (Single Phase) | AC (Three Phase) | DC | Wire Connection Type | Environmental Rating | Each | |
Switches | |||||||||||
1/4 NPT Female Pipe Connection | |||||||||||
| 1-12 | 3-7 | 4 | 12 | ±5% | 2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC | 1/2 hp @ 32 V DC 1/2 hp @ 230 V DC | Screw Terminals | NEMA 1 | 00000000 | 000000 |
| 3-35 | 5-10 | 10 | 35 | ±5% | 2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC | 1/2 hp @ 32 V DC 1/2 hp @ 230 V DC | Screw Terminals | NEMA 1 | 00000000 | 00000 |
| 5-65 | 30-50 | 22 | 65 | ±5% | 1 1/2 hp @ 120 V AC 2 hp @ 240 V AC | 3 hp @ 240 V AC | 1/4 hp @ 32 V DC 1/4 hp @ 230 V DC | Screw Terminals | NEMA 1 | 00000000 | 00000 |
| 5-80 | 30-50 | 22 | 80 | ±5% | 2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC | 1/2 hp @ 32 V DC 1/2 hp @ 230 V DC | Screw Terminals | NEMA 1 | 00000000 | 00000 |
Switches with Manual On/Off Lever | |||||||||||
1/2 NPSF Female Pipe Connection | |||||||||||
| 20-65 | 5-45 | 20 | 65 | ±3% | 1 1/2 hp @ 120 V AC 2 hp @ 240 V AC | 2 hp @ 120 V AC 3 hp @ 240 V AC | __ | Screw Terminals | NEMA 1 | 00000000 | 00000 |
| 25-80 | 5-60 | 20 | 80 | ±3% | 2 hp @ 120 V AC 3 hp @ 240 V AC | 3 hp @ 120 V AC 5 hp @ 240 V AC | 1/2 hp @ 120 V DC 1/2 hp @ 240 V DC | Screw Terminals | NEMA 1 | 00000000 | 00000 |
Switches with Manual On/Off Lever and Low-Pressure Cutoff | |||||||||||
1/2 NPSF Female Pipe Connection | |||||||||||
| 20-65 | 5-45 | 20 | 65 | ±3% | 1 1/2 hp @ 120 V AC 2 hp @ 240 V AC | 2 hp @ 120 V AC 3 hp @ 240 V AC | 1/4 hp @ 240 V AC 1/4 hp @ 120 V DC | Screw Terminals | NEMA 1 | 00000000 | 00000 |
Switches with Pressure Surge Protection | |||||||||||
1/2 NPSF Female Pipe Connection | |||||||||||
| 20-65 | 5-45 | 20 | 65 | ±3% | 1 1/2 hp @ 120 V AC 2 hp @ 240 V AC | 2 hp @ 120 V AC 3 hp @ 240 V AC | __ | Screw Terminals | NEMA 1 | 00000000 | 00000 |
Pressure Switches for Sump Pumps
Since these switches activate on increasing pressure caused by rising water levels, they have no floats to catch on sump pit walls. Use them to replace an existing switch, or pair them with a plug-in activated pump to control when the pump activates.
Switch with wire leads can be connected to a three-pronged plug or wired directly to a power source.