PSW-852BK
Pressure Switch, Gauge, 1/4" FNPT, 0 psi, 50 psi, DPDT, 480 VAC
- Manufacturer: OMEGA
- Product type: Pressure Switches
- SVHC: Lead (04-Feb-2026)
- Deadband Max: 6psi
- Deadband Min: 0.7psi
- Pressure Type: Gauge
- Product Range: PSW-850 Series
- Sensor Mounting: Panel / Chassis
- Pressure Port Size: 1/4"
- Pressure Port Type: 1/4" FNPT
- Contact Configuration: DPDT
- Switching Current Max: 15A
- Switching Voltage Max: 480VAC
- Operating Pressure Max: 50psi
- Operating Pressure Min: 0psi
- Pressure Fitting Style: 1/4" FNPT
- Operating Temperature Max: 70°C
- Operating Temperature Min: -40°C
- Transducer Connection / Termination: 3x 7/8" Knockouts
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 963.96 € |
| Current stock | 10+ |
| Lead time | 30 days |
## _**General purpose controls with choice of dual or triple switches**_ ## _**30 inhg Vacuum to 3000 psi**_ ## _**psw-850 series**_ U **2- or 3-Switch Outputs— Can be Separated Up to 100% of Range** U **Adjustable Pressure Ranges** U **NEMA 1 Enclosure** The PSW-850 is a simple, economical control for processes that require multiple switching capabilities. Dual or triple switch controls provide multi-outputs in applications such as alarm and shutdown, pre-alarm and alarm, high/low limit, and level staging functions. Triple-switch models have been used for liquid level control. In this application, 3 pressure settings correspond to “pumping out” elevations in a sump pump. ## **SPECIFICATIONS** **Approvals:** UL, CE compliant **Storage Temperature:** -54 to 71°C (-67 to 158°F) **Ambient Temperature:** -40 to 70°C (-40 to 160°F), except model PSW-852A: -40 to 70°C (0 to 160°F); setpoint typically shifts less than 1% of range for a 30°C (54°F) ambient temperature change **Setpoint Repeatability:** ±2% of adjustable range, except model PSW-852E: ±3% of adjustable range **Shock:** Setpoint repeats after 15 g, 10 ms duration **Vibration:** Setpoint repeats after 2.5 g, 5 to 500 Hz **Enclosure:** Die-cast aluminum, epoxy powder coated, gasketed, captive cover screws **Enclosure Dimensions:** 102 H x 125 W x 140 mm D (4 x 4.9 x 5.5"); 210 mm (8.25") maximum height with pressure port **Enclosure Classification:** with NEMA 1 requirements **Enclosure Classification:** Complies **Switch Output:** 2 or 3 SPDT; switches can be separated up to 100%, except models PSW-852A and PSW-852B: 30%; switches can be wired “normally open” or “normally closed” **==> picture [63 x 23] intentionally omitted <==** **----- Start of picture text -----**<br> PSW-853CJ,<br>shown smaller<br>than actual size.<br>**----- End of picture text -----**<br> **Electrical Rating:** 15 A 125/250/480 Vac resistive **Weight:** Approx. 1.4 to 3.4 kg (3 to 7.5 lb) (varies with model) **Electrical Connection:** Three 22 mm ([7] ⁄8") diameter knockouts **Pressure Connection:**[1] ⁄4 FNPT except model PSW-852A:[1] ⁄2 FNPT **H-27** ## _**General purpose controls with choice of dual or triple switches**_ **==> picture [603 x 690] intentionally omitted <==** **----- Start of picture text -----**<br> To Order<br>RANgE<br>DEADbAND PROOF<br>STANDARD METRIC<br>MODEL NO. STANDARD UNITS PRESSURE SWITCH<br>DUAL SETPOINTS, FIxED DEADbAND, bUNA-N DIAPHRAgM, O-RINg, [1] ⁄2 FNPT ALUMINUM PRESSURE CONNECTION<br>PSW-852AA -300 to 0 inH2O -747 to 0 mbar 0.2 to 8 inH2O 100 psi (2)15 A SPDT<br>PSW-852Ab -10 to 10 inH2O -25 to 25 mbar 0.1 to 0.6 inH2O 100 psi (2)15 A SPDT<br>PSW-852AC -50 to 50 inH2O -125 to 125 mbar 0.1 to 3 inH2O 100 psi (2)15 A SPDT<br>PSW-852AD 0.5 to 5 inH2O 1.25 to 12.5 mbar 0.1 to 0.3 inH2O 100 psi (2)15 A SPDT<br>PSW-852AE 2.5 to 50 inH2O 6 to 125 mbar 0.1 to 0.8 inH2O 100 psi (2)15 A SPDT<br>PSW-852AF 10 to 250 inH2O 25 to 622 mbar 0.1 to 8 inH2O 100 psi (2)15 A SPDT<br>DUAL SETPOINTS, FIxED DEADbAND, 316 SS DIAPHRAgM, FKM O-RINg, [1][⁄] 4 [FNPT] 316L SS PRESSURE CONNECTION<br>PSW-852bI 0 to 20 psi 0 to 1.4 bar 0.2 to 4 psi 225 psi (2)15 A SPDT<br>PSW-852bK 0 to 50 psi 0 to 3.4 bar 0.7 to 6 psi 225 psi (2)15 A SPDT<br>PSW-852bL 0 to 100 psi 0 to 6.9 bar 1 to 7 psi 225 psi (2)15 A SPDT<br>DUAL SETPOINTS, FIxED DEADbAND, SEALED bRASS bELLOWS, [1][⁄] 4 [FNPT] NICKEL-PLATED H<br>bRASS PRESSURE CONNECTION<br>PSW-852CH 30 inHg vac to 20 psi -1 to 1.4 bar 0.4 to 2.4 inHg 25 psi (2)15 A SPDT<br>PSW-852Cg 0 to 80 inH2O 0 to 200 mbar 4 to 12 inH2O 5 psi (2)15 A SPDT<br>PSW-852CJ 0 to 30 psi 0 to 2 bar 0.2 to 1.2 psi 40 psi (2)15 A SPDT<br>PSW-852CL 0 to 100 psi 0 to 6.9 bar 0.4 to 1.6 psi 125 psi (2)15 A SPDT<br>PSW-852CM 0 to 200 psi 0 to 13.7 bar 0.6 to 4 psi 200 psi (2)15 A SPDT<br>DUAL SETPOINTS, FIxED DEADbAND, WELDED 316L SS bELLOWS, [1] ⁄4 FNPT PRESSURE CONNECTION<br>PSW-852DN 0 to 500 psi 0 to 34.5 bar 6 to 18 psi 575 psi (2)15 A SPDT<br>DUAL SETPOINTS, FIxED DEADbAND, 303 SS PISTON, bUNA-N O-RINg, [1] ⁄4 FNPT 303 SS PRESSURE CONNECTION<br>PSW-852EO 100 to 1000 psi 7 to 69 bar 60 to 300 psi 10,000 psi (2)15 A SPDT<br>PSW-852EP 200 to 3000 psi 13.8 to 206 bar 80 to 500 psi 10,000 psi (2)15 A SPDT<br>DUAL SETPOINTS, REFERENCE ADJUSTMENT, FIxED DEADbAND, SEALED bRASS bELLOWS, [1] ⁄4 FNPT<br>NICKEL-PLATED bRASS PRESSURE CONNECTION<br>PSW-855CH 30 inHg vac. to 20 psi -1 to 1.4 bar 0.4 to 2.4 inHg 25 psi (2)15 A SPDT<br>PSW-855CJ 0 to 30 psi 0 to 2 bar 0.2 to 1.2 psi 40 psi (2)15 A SPDT<br>PSW-855CL 0 to 100 psi 0 to 6.9 bar 0.4 to 1.6 psi 125 psi (2)15 A SPDT<br>PSW-855CM 0 to 200 psi 0 to 13.7 bar 0.6 to 4 psi 200 psi (2)15 A SPDT<br>DUAL SETPOINTS, REFERENCE ADJUSTMENT, FIxED DEADbAND, WELDED 316L SS bELLOWS,<br>1⁄4 FNPT 316L SS PRESSURE CONNECTION<br>PSW-855DN 0 to 500 psi 0 to 34 bar 6 to 18 psi 575 psi (2)15 A SPDT<br>THREE SETPOINTS, FIxED DEADbAND, SEALED bRASS bELLOWS, [1] ⁄4 FNPT NICKEL-PLATED bRASS<br>PRESSURE CONNECTION<br>PSW-853CH 30 inHg vac. to 20 psi -1 to 1.4 bar 0.4 to 2.4 inHg 25 psi (3)15 A SPDT<br>PSW-853CJ 0 to 30 psi 0 to 2 bar 0.2 to 1.2 psi 40 psi (3)15 A SPDT<br>PSW-853CL 0 to 100 psi 0 to 6.9 bar 0.4 to 1.6 psi 125 psi (3)15 A SPDT<br>PSW-853CM 0 to 200 psi 0 to 13.7 bar 0.6 to 4 psi 200 psi (3)15 A SPDT<br>THREE SETPOINTS, FIxED DEADbAND, WELDED 316L SS bELLOWS, [1] ⁄4 FNPT 316L SS PRESSURE CONNECTION<br>PSW-853DN 0 to 500 psi 0 to 34.5 bar 6 to 8 psi 575 psi (3)15 A SPDT<br>THREE SETPOINTS, REFERENCE ADJUSTMENT, FIxED DEADbAND, SEALED bRASS bELLOWS, [1] ⁄4 FNPT<br>NICKEL-PLATED bRASS PRESSURE CONNECTION<br>PSW-856CH 30 inHg vac to 20 psi -1 to 1.4 bar 0.4 to 2.4 inHg 25 psi (3)15 A SPDT<br>PSW-856CJ 0 to 30 psi 0 to 2 bar 0.2 to 1.2 psi 40 psi (3)15 A SPDT<br>PSW-856CL 0 to 100 psi 0 to 6.9 bar 0.4 to 1.6 psi 125 psi (3)15 A SPDT<br>PSW-856CM 0 to 200 psi 0 to 13.7 bar 0.6 to 4 psi 200 psi (3)15 A SPDT<br>THREE SETPOINTS, FIxED DEADbAND, WELDED 316L SS bELLOWS, [1] ⁄4 FNPT 316L SS PRESSURE CONNECTION<br>PSW-856DN 0 to 500 psi 0 to 34.5 bar 6 to 8 psi 575 psi (3)15 A SPDT<br>Comes complete with operator’s manual.<br>Ordering Example: PSW-856CJ, control switch with 3 setpoints, reference dial, sealed brass bellows, [1] ⁄4 FNPT fitting and range of 0 to 30 psi.<br>H-28<br>PRESSURE SWITCHES<br>**----- End of picture text -----**<br>
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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