PSW845-5
Pressure Switch, Differential, 1/4"-18 NPTF, 35 psi, 250 psi, SPDT, 120 VAC
- Manufacturer: OMEGA
- Product type: Pressure Switches
- SVHC: No SVHC (04-Feb-2026)
- Deadband Max: -
- Deadband Min: -
- Pressure Type: Differential
- Product Range: PSW845 Series
- Sensor Mounting: Screw
- Pressure Port Size: 1/4"-18
- Pressure Port Type: 1/4"-18 NPTF
- Contact Configuration: SPDT
- Electrical Connection: Pigtail Leads
- Switching Current Max: 250mA
- Switching Voltage Max: 120VAC
- Operating Pressure Max: 250psi
- Operating Pressure Min: 35psi
- Pressure Fitting Style: 1/4"-18 NPTF
- Operating Temperature Max: 107°C
- Operating Temperature Min: -54°C
- Transducer Connection / Termination: Pigtail Leads
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 244.15 € |
| Current stock | 10+ |
| Lead time | 29 days |
## _**Economical DiffErEntial PrEssurE switch**_ ## _**7 to 250 psi 0.25 a sPDt switch**_ ## _**Psw845 series**_ **PSW845-1 shown actual size.** The PSW845 is a rugged differential pressure switch, with excellent bypass characteristics. It is able to handle a variety of media to 6000 psig. The PSW845 can be mounted in any orientation, and is capable of withstanding light to moderate mechanical shock and vibratory loads. ## **SPECIFICATIONS** **Switch:** SPDT, rated 0.25 A @ 120 Vac/175 Vdc ## **Pressure Ratings:** **Vacuum:** to 6000 psig **Differential Pressure:** to 2000 psid **==> picture [309 x 174] intentionally omitted <==** **----- Start of picture text -----**<br> ADJUSTABLE SCREW rT 32 (1.25)<br>38<br>(1.50)<br>+ –<br>a L@<br>1H ©<br>a 76 (3.00) 1" HEX 1/4 NPT<br>102 (4.0) max<br>Dimensions: mm (inch)<br>**----- End of picture text -----**<br> **Proof:** 9000 psig **Wetted Parts:** Steel spring, anodized aluminum piston, body and fitting, Buna seal, Loctite #271 sealing compound **Fitting:**[1][⁄] 4-18 NPT female **Electrical Connection:** 300 mm (12") pigtail leads, 24 AWG **Ambient Temperature:** -54 to 107°C (-65 to 225°F); setpoint change of up to 2% of sensor capacity may be anticipated when switch is used below -23°C or above 52°C **Cycling:** Not to exceed 20 cycles/min **Dimensions:** 102 L x 38.1 H x 31.8 mm D (4 x 1.5 x 1.25") **Weight:** Approx 241 g (8.5 oz) ## **To Order** |**To Order**|**To Order**|**To Order**|**To Order**| |---|---|---|---| |**ADjuSTAblE RANgE**<br>**MODEl NO.**|**ADjuSTAblE RANgE(psid)**||**REPEATAbIlITy**| ||**MODEl NO.**<br>**DECREASINg**|**INCREASINg**|| |**PSW845-1**|2 to 7|7 to 13|±2 psi| |**PSW845-2**|5 to 16|13 to 25|±4 psi| |**PSW845-3**|10 to 21|25 to 45|±8 psi| |**PSW845-4**|20 to 80|35 to 160|±16 psi| |**PSW845-5**|35 to 120|120 to 250|±32 psi| _Comes complete with operator’s manual._ _**Ordering Example: PSW845-3,** differential pressure switch with 25 to 45 psi range._ **H-19**
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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