PSW-801
Pressure Switch, Vacuum, 1/4" MNPT, 25.4 mm-Hg, 762 mm-Hg, SPDT, 250 VAC
- Manufacturer: OMEGA
- Product type: Pressure Switches
- SVHC: Lead (04-Feb-2026)
- Deadband Max: -
- Deadband Min: -
- Pressure Type: Vacuum
- Product Range: PSW-800 Series
- Sensor Mounting: Stud
- Pressure Port Size: 1/4"
- Pressure Port Type: 1/4" MNPT
- Contact Configuration: SPDT
- Electrical Connection: Flying Leads
- Switching Current Max: 3A
- Switching Voltage Max: 250VAC
- Operating Pressure Max: 762mm-Hg
- Operating Pressure Min: 25.4mm-Hg
- Pressure Fitting Style: 1/4" MNPT
- Operating Temperature Max: 75°C
- Operating Temperature Min: -20°C
- Transducer Connection / Termination: 1/2" NPT, Wire Leaded
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 281.88 € |
| Current stock | 10+ |
| Lead time | 30 days |
## _**Economical industrial PrEssurE sWitcHEs**_ ## _**Vacuum to 7500 psi**_ ## _**PsW-800 series**_ - U **Easy Adjustment with Locking Set Screw** - U **Rugged Industrial Design** U **Standard[1] ⁄2" Female Conduit Fitting for Electrical Termination** The PSW-800 Series comprises economical pressure switches that feature an easy-to-adjust setpoint with locking set screw. They have a sealed-piston or diaphragm-piston design, ideal for harsh environments. All models come with 300 mm (12") color-coded leads and a[1] ⁄2" female conduit fitting for electrical connections. **SPECIFICATIONS Setpoint Repeatability: Diaphragm Models (PSW-801 to PSW-807):** ±1% of span **Piston Models (PSW-808 to PSW-811):** ±1.5% of span ## **Hysteresis/Deadband:** See “To Order” table at right **Contact Rating:** 5 A maximum @ 125/250 Vac, silver serrated contacts 3 A max @ 28 Vdc **Temp Range:** -20 to 75°C (-4 to 167°F) (vacuum range); -30 to 75°C (-22 to 167°F) (500 psi and below); -40 to 75°C (-40 to 167° F) (600 psi and above) **Thermal Effects:** <1% for 25°C (45°F) change **Proof Pressure:** See “To Order” table **Burst Pressure:** 2x proof pressure **Sensor Type: PSW-801 to PSW-807:** Diaphragm piston **PSW-808 to PSW-811:** Sealed piston **Wetted Parts:** **500 psi and Below:** Brass, Buna-N **600 psi and Above:** Brass, Buna-N and stainless steel **Pressure Port:**[1] ⁄4 MNPT **Electrical Connection:** 300 mm (12") free leads with[1] ⁄2" female conduit fitting **Housing:** Open-type plastic housing **Weight:** 0.4 kg (0.95 lb) **==> picture [335 x 493] intentionally omitted <==** **----- Start of picture text -----**<br> PSW-805,<br>shown smaller<br>than actual size.<br>1/2 NPT FEMALE<br>CONDUIT FITTING<br>305 (12) FREE<br>LEADS<br>STANDARD<br>29 HEX<br>(1.14)<br>38 DIA.<br>(1.5)<br>121<br>Tm<br>(4.76)<br> WIRE CODE PRESSuRE vACuuM<br>|<br>Lead Color Color 32 HEX<br> (1.26)<br>sims<br>Normally closed Blue Red<br>Common Purple Purple 1/4 NPT MALE =<br>PRESSURE PORT<br> Normally open Red Blue Dimensions: mm (inch)<br>[T][o] [O][r][de][r]<br>PRESSuRE SETTINg RANgE<br> MODEL DECREASINg INCREASINg DEADBAND PROOF<br> NuMBER MIN MAx MIN MAx RANgE PRESSuRE<br> vACuuM MODEL (inHg)<br> PSW-801 1 28 4 30 1 to 4 30 psi<br> gAgE PRESSuRE MODELS (psig)<br>es PSW-802 2.5 ee 12.8 3 15 0.5 to 2.2 1000 psi<br>es PSW-803 ee 5 es 31 6 35 1.0 to 4.0 1000 psi<br>es PSW-804 ee 8.5 es 44 10 es 50 1.5 to 6.0 1000 psi<br>es PSW-805 ee 22.5 es 112 25 ss 125 2.5 to 13 1000 psi<br>es PSW-806 ee 70.0 220 ss 50 250 10 to 30 1000 psi<br>es PSW-807 es 110 440 130 500 20 to 60 1000 psi<br>rs PSW-808 190 es 450 250 es 600 60 to 150 7000 psi<br>es PSW-809 ee 360 es 1450 430 1700 70 to 250 7000 psi<br>es PSW-810 ee 1450 es 3900 1650 es 4400 200 to 500 7000 psi<br>TT PSW-811 3650 6700 4000 7500 350 to 800 12,000 psi<br>Comes complete with operator’s manual.<br>Ordering Example: PSW-804, 10 to 50 psi pressure switch with 1.5 to 6.0 psi deadband<br>range and 1000 psi proof pressure.<br>**----- End of picture text -----**<br> **H-17**
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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