PSW-581
Pressure Switch, Vacuum, 1/4" MNPT, 1.5 psi, 3.5 psi, SPDT
- Manufacturer: OMEGA
- Product type: Pressure Switches
- SVHC: No SVHC (04-Feb-2026)
- Deadband Max: 1.7psi
- Deadband Min: 0.5psi
- Pressure Type: Vacuum
- Product Range: PSW-580 Series
- Sensor Mounting: Stud
- Pressure Port Size: 1/4"
- Pressure Port Type: 1/4" MNPT
- Contact Configuration: SPDT
- Electrical Connection: Screw
- Switching Current Max: 15A
- Switching Voltage Max: -
- Operating Pressure Max: 3.5psi
- Operating Pressure Min: 1.5psi
- Pressure Fitting Style: 1/4" MNPT
- Operating Temperature Max: -
- Operating Temperature Min: -
- Transducer Connection / Termination: Screw
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 94.73 € |
| Current stock | 10+ |
| Lead time | 30 days |
**H** ## _**ECONOMICAL OEM PRESSURE SWITCHES**_ ## _**Vacuum to 500 psi**_ ## _**PSW-580 Series**_ U **External Scale for Easy Setpoint Adjustments** U **UL-Rated Heavy-Duty 15 A SPDT Switch** ## **SPECIFICATIONS** **Switch:** 15 A SPDT silver contacts **Approval:** UL **Process Temp:** -35 to 85°C (-31 to 185°F); 2% setpoint shift can occur below -23°C (-10°F) or above 52°C (125°F) **==> picture [61 x 23] intentionally omitted <==** **----- Start of picture text -----**<br> PSW-581,<br>shown close to<br>actual size.<br>**----- End of picture text -----**<br> **Proof Pressure:** 600 psig **Cycling:** Not to exceed 60 cycles/ minimum **Warranty:** 3 years/1 million cycles **Sensor:** Aluminum diaphragm **Wetted Parts:** Buna-N, aluminum, zinc alloy chromate finish and loctite sealing compound #271 **Enclosure:** Switch actuator and bracket steel: irridite finish; adjusting cap and body: zinc alloy chromate finish; switch shield: Mylar[®] **Pressure Port:**[1] ⁄4 MNPT **Electrical Connection:** Screw terminals **Size:** 92 H x 60 W x 41 mm Dia. (3[5] ⁄8 x 2[3] ⁄8 x 1[5] ⁄8") **Weight:** 210 g (7.4 oz) _**Caution:** Pressure switches are manufactured to the highest-quality specifications. However, because of their economical construction, they should be used only for applications in which, in the event of product failure, the risk of damage to equipment or personnel is minimal._ ## **To Order** |**To Order**|**To Order**|**To Order**|**To Order**|**To Order**| |---|---|---|---|---| |**MODEL NO.**|**ADJUSTABLE RANGE**|**DEADBAND**|**REPEATABILITY**|**PROOF PRESSURE**| |**PSW-581**|6 to 28 inHg Vac<br>1.5 to 3.5 psig|3 to 14 inHg<br>0.5 to 1.7 psig|±1.2 inHg<br>±0.15 psig|29.9 inHg Vac<br>600 psig| |**PSW-582**|3 to 40psig|2 to 5psig|±1.0psig|600psig| |**PSW-583**|30 to 150psig|5 to 30psig|±5.0psig|600psig| |**PSW-584**|100 to 500 psig|30 to 120 psig|±20 psig|600 psig| _Comes complete with operator’s manual._ _**Ordering Examples: PSW-582,** economical OEM pressure switch with adjustable range of 3 to 40 psig and 600 psig proof pressure._ _**PSW-584,** economical OEM pressure switch with adjustable range of 100 to 500 psig and 600 psig proof pressure._ **H-12**
Updated at June 9, 2026
Omega is a globally recognized leader in the design and manufacture of state-of-the-art products for process measurement and control. Renowned for its engineering expertise, the company provides highly reliable solutions for monitoring critical parameters such as temperature, humidity, pressure, strain, and flow across diverse industrial applications. Our extensive selection of Omega products is focused on the brand's core strengths in sensing and automation technologies. The range features a vast array of high-precision temperature sensors, including industry-standard thermocouples and RTDs, supported by a comprehensive selection of essential sensor accessories. To complement these measurement devices, we offer a substantial lineup of robust temperature controllers and advanced pressure transducers engineered to maintain precise conditions in demanding environments. Beyond primary sensing and control, the Omega portfolio encompasses sophisticated panel instrumentation for clear process visualization, alongside highly accurate force sensors and load cells. The offering is completed by reliable signal converters, data acquisition tools such as dataloggers, and fundamental connectivity components, providing professionals with the specialized equipment necessary to build complete, end-to-end industrial control systems.
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