PSW12V-CS

Pressure Switch, 1/4" FNPT, 50 psi, 150 psi, SPDT, 250 VAC

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: OMEGA
Product type: Pressure Switches
SVHC: Lead (04-Feb-2026)
Deadband Max: 15psi
Deadband Min: 5psi
Pressure Type: -
Product Range: PSW12 Series
Sensor Mounting: Stud
Pressure Port Size: 1/4"
Pressure Port Type: 1/4" FNPT
Contact Configuration: SPDT
Electrical Connection: Flying Leads
Switching Current Max: 5A
Switching Voltage Max: 250VAC
Operating Pressure Max: 150psi
Operating Pressure Min: 50psi
Pressure Fitting Style: 1/4" FNPT
Operating Temperature Max: 80°C
Operating Temperature Min: -50°C
Transducer Connection / Termination: 1/2" NPT, Wire Leaded

Delivery and price
Units per pack	1
Price	713.84 €
Current stock	10+
Lead time	30 days

Datasheet

## _**compact, vibration-resistant switches for class 1 hazardous locations**_ 

## _**8 to 6000 psi**_ 

## _**psw12 series**_ 

- U **Compact Stainless Steel Construction** 

**==> picture [283 x 158] intentionally omitted <==**

**----- Start of picture text -----**<br>
Setpoint<br>adjustment<br>with cover   PSW12T-BS, shown<br>open (up) actual size.<br>           Belleville<br>= Ly<br>assembly<br>(inside)<br>rugged<br>design<br>**----- End of picture text -----**<br>


U **Belleville Technology for Long Life, Vibration Resistance, and Stability** U **Easy Field Setting and Adjustment** 

- U **SPDT Sealed Switches** 

- U **Strain Relief** 

- U **1.8 m (72") Lead Wires** U **Mounting Bracket for Retrofit Applications** 

OMEGA’S PSW12 offers reliability, repeatability, and durability in a compact design. This switch is rack mountable and has an accessible adjustment when installed. Snapaction Belleville spring design contributes to a long, stable life and to vibration resistance. An optional mounting bracket provides easy retrofit, and an optional cover lock adds security. Ranges are from 8 to 6000 psi (0.6 to 414 bar). 

## **SPECIFICATIONS** 

**Approval:** UL listed, cUL certified; Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; Class III **Storage Temperature:** -50 to 80°C **-** ( 58 to 176°F) 

**Process Temperature: Stainless Steel Diaphragm:** -17 to 160°C (0 to 320°F) **Polyimide Diaphragm:** -28 to 93°C 

- (-20 to 200°F) 

**Ambient Temperature:** -50 to 80°C (-58 to 176°F); setpoint typically shifts less than 1% of range for a 28°C (50°F) ambient temperature change. 

**Shock:** Setpoint repeats after 75 g, 10 ms duration 

**Vibration:** Setpoint repeats after 15 g, 10 to 2000 Hz **Setpoint Repeatability:** ±1% of adjustable range 

**Switch Output:** 1 or 2 SPDT, factorysealed lead wires; mechanical contact life: 10 million cycles 

**Electrical Ratings** : 5 A @ 250 Vac, 

5 A resistive and 3 A inductive 

@ 28 Vdc; silver contacts 

**Enclosure:** 300 stainless steel; NEMA 4X, 7, 9 and IP66 

**Weight:** Approximately 0.34 kg (12 oz) 

**Electrical Connection:**[1] ⁄2 MNPT with 1.8 m (72") lead wires 

**Pressure Connection:**[1] ⁄4 FNPT 

**==> picture [155 x 260] intentionally omitted <==**

**----- Start of picture text -----**<br>
Dimensions:<br>mm (inch)<br>31.8  (1.25)<br>DIA.<br>nop FACTORY-SEALED<br>LEAD WIRES<br>46 (1.8) LONG<br>ff<br>1/2 NPT (ST/ST)<br>ie<br>34.9  (1.38)<br>_ uu<br>ADJUSTMENT<br>ACCESS COVER.<br>SLIDE UP<br>TO OPEN.<br>S&S<br>SLOTTED<br>72.9  (2.88) ADJUSTMENT<br>SCREW.<br>TURN IN<br>TO RAISE<br>SETPOINT.<br>_<br>WIRE COLOR CODING<br>15.9  (0.62) DPDT<br>   SPDT    SW1   SW2<br>_ [tt] COMMON  BRN    BRN       YEL<br>1 N.C.    RED    RED       BLK<br>N.O.    BLU     BLU      VLET<br>1/4 NPT (ST/ST) GROUND     GRN    GRN<br>**----- End of picture text -----**<br>


**H-35** 

**H** 

## _**compact switches**_ 

## **PSW12T-CS, shown smaller than actual size.** 

|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|**To Order**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|**MODEL NO.**|**ADJUSTABLE RANGE**||||**DEADBAND**||||**MAXIMUM**<br>**WORKING**<br>**PRESSURE**||**PROOF PRESSURE**||**SWITCH**|
||**FALL/LOW**||**RISE/HIGH**||**LOW**||**HIGH**|||||||
||**psi**|**bar**|**psi**|**bar**|**psi**|**bar**|**psi**|**bar**|**psi**|**bar**|**psi**|**bar**||
|**1⁄4 FNPT 316 SS PRESSURE CONNECTION, PFA-COATED POLYIMIDE DIAPHRAGM,**<br>**BUNA N O-RING, 1⁄8" ORIFICE, SINGLE 5 A SPDT SWITCH**<br>~~Po~~||||||||||||||
|**PSW12T-AS**<br>~~Po~~<br>~~PCT~~|8<br>~~PCT~~<br>~~lr~~|0.6<br>~~lr~~|30|2.1|2|0.1|6|0.4|600|41|1000|69|Single|
|**PSW12T-BS**<br>~~Po~~<br>~~PCT~~<br>~~Po~~|15<br>~~PCT~~<br>~~lr~~|1.0<br>~~lr~~|55|3.8|3|0.2|8|0.6|600|41|1000|69|Single|
|**PSW12T-CS**<br>~~PCT~~<br>~~Po~~<br>~~PoC~~|30<br>~~PCT~~<br>~~lr~~<br>~~PoC~~<br>~~lr~~|2.1<br>~~lr~~<br>~~lr~~|170|11.7|5|0.3|15|1.0|600|41|1000|69|Single|
|**PSW12T-DS**<br>~~Po~~<br>~~PoC~~<br>~~po~~|100<br>~~PoC~~<br>~~lr~~|6.9<br>~~lr~~|370|25.5|15|1.0|50|3.4|600|41|1000|69|Single|
|**PSW12T-ES**<br>~~PoC~~<br>~~po~~<br>~~PoC~~|200<br>~~PoC~~<br>~~lr~~<br>~~lr~~|13.8<br>~~lr~~<br>~~lr~~|700|48.3|40|2.8|90|6.2|1500|103|3000|206|Single|
|**PSW12T-FS**<br>~~po~~<br>~~PoC~~<br>~~Po~~<br>~~rrtC~~|400<br>~~lr~~|27.6<br>~~lr~~|1500|103.0|100|6.9|250|17.2|3000|206|4500|309|Single|
|**PSW12T-GS**<br>~~PoC~~<br>~~Po~~<br>~~rrtC~~<br>~~es ae~~|1000<br>~~lr~~<br>~~ae~~|68.9<br>~~lr~~<br>~~ee~~|3200<br>~~rs rs~~|220.6<br>~~rs~~|100<br>~~ee~~|6.9<br>~~ee~~|500|34.5<br>~~re~~|6000<br>~~QO~~|414<br>~~QO~~|10,000|689|Single|
|**PSW12T-HS**<br>~~Po~~<br>~~rrtC~~<br>~~es ae~~|2000<br>~~ae~~|137.9<br>~~ee~~|6000<br>~~rs rs~~|414.0<br>~~rs~~|400<br>~~ee~~|27.6<br>~~ee~~|800|55.2<br>~~re~~|8000<br>~~QO~~|551<br>~~QO~~|10,000|689|Single|
|**1⁄4 FNPT 316 SS PRESSURE CONNECTION AND DIAPHRAGM, FKM O-RING, 1⁄8" ORIFICE, SINGLE 5 A SPDT SWITCH**<br>~~es aeee~~<br>~~rs rs ee~~<br>~~reQO~~<br>~~Po~~||||||||||||||
|**PSW12V-AS**<br>~~Po~~<br>~~PC~~|9<br>~~lr~~|0.6<br>~~lr~~|35|2.4|2|0.1|7|0.5|600|41|1000|69|Single|
|**PSW12V-BS**<br>~~Po~~<br>~~PC~~<br>~~Po~~|25<br>~~lr~~|1.7<br>~~lr~~|65|4.5|3|0.2|10|0.7|600|41|1000|69|Single|
|**PSW12V-CS**<br>~~PC~~<br>~~Po~~<br>~~PoC~~|50<br>~~lr~~<br>~~PoC~~<br>~~|~~|3.5<br>~~lr~~|150|10.3|5|0.3|15|1.0|600|41|1000|69|Single|
|**PSW12V-DS**<br>~~Po~~<br>~~PoC~~<br>~~po~~|100<br>~~PoC~~<br>~~|~~|6.9|350|24.1|15|1.0|50|3.4|600|41|1000|69|Single|
|**PSW12V-ES**<br>~~PoC~~<br>~~po~~<br>~~PoC~~|250<br>~~PoC~~<br>~~|~~<br>~~lr~~|17.2<br>~~lr~~|700|48.3|40|2.8|95|6.6|1500|103|3000|206|Single|
|**PSW12V-FS**<br>~~po~~<br>~~PoC~~<br>~~Port~~|400<br>~~lr~~|27.6<br>~~lr~~|1500|103.0|100|6.9|300|20.7|3000|206|4500|309|Single|
|**PSW12V-GS**<br>~~PoC~~<br>~~Port~~<br>~~es~~|1000<br>~~lr~~<br>~~ee~~|68.9<br>~~lr~~<br>~~es es~~|3200<br>~~es~~|220.6<br>~~rs~~|100<br>~~ee~~|6.9<br>~~ee~~|500|34.5<br>~~re~~|6000<br>~~QQ~~|414<br>~~QQ~~|10,000<br>~~ne~~|689|Single|
|**PSW12V-HS**<br>~~Port~~<br>~~es~~|2000<br>~~ee~~|137.9<br>~~es es~~|6000<br>~~es~~|414.0<br>~~rs~~|400<br>~~ee~~|27.6<br>~~ee~~|1000|69<br>~~re~~|8000<br>~~QQ~~|551<br>~~QQ~~|10,000<br>~~ne~~|689|Single|
|**1⁄4 FNPT 316 SS PRESSURE CONNECTION, PFA-COATED POLYIMIDE DIAPHRAGM,**<br>**BUNA-N O-RING, 1⁄8" ORIFICE, DUAL 5 A SPDT SWITCH**<br>~~es~~<br>~~ee es es rs ee~~<br>~~reQQ~~<br>~~ne~~<br>~~PoC~~||||||||||||||
|**PSW12T-AD**<br>~~PoC~~<br>~~po~~|8|0.6|30|2.1|2|0.1|6|0.4|600|41|1000|69|Dual|
|**PSW12T-BD**<br>~~PoC~~<br>~~po~~<br>~~PoE~~|15<br>~~PoE~~|1.0|55|3.8|3|0.2|8|0.6|600|41|1000|69|Dual|
|**PSW12T-CD**<br>~~po~~<br>~~PoE~~<br>~~Po~~<br>~~rrtC~~|30<br>~~PoE~~<br>~~el~~|2.1<br>~~el~~|170|11.7|5|0.3|15|1.0|600|41|1000|69|Dual|
|**PSW12T-DD**<br>~~PoE~~<br>~~Po~~<br>~~rrtC~~<br>~~PoE~~|100<br>~~PoE~~<br>~~el~~<br>~~PoE~~|6.9<br>~~el~~|370|25.5|15|1.0|50|3.4|600|41|1000|69|Dual|
|**PSW12T-ED**<br>~~Po~~<br>~~rrtC~~<br>~~PoE~~<br>~~PoC~~|200<br>~~el~~<br>~~PoE~~<br>~~PoC~~<br>~~lr~~|13.8<br>~~el~~<br>~~lr~~|700|48.3|40|2.8|90|6.2|1500|103|3000|206|Dual|
|**PSW12T-FD**<br>~~PoE~~<br>~~PoC~~<br>~~Po~~|400<br>~~PoE~~<br>~~PoC~~<br>~~lr~~|27.6<br>~~lr~~|1500|103.0|100|6.9|250|17.2|3000|206|4500|309|Dual|
|**PSW12T-GD**<br>~~PoC~~<br>~~Po~~<br>~~es~~|1000<br>~~PoC~~<br>~~lr~~<br>~~ee~~|68.9<br>~~lr~~<br>~~es~~|3200<br>~~es~~|220.6<br>~~es~~|100<br>~~ee~~|6.9<br>~~ee~~|500<br>~~re~~|34.5<br>~~re~~|6000<br>~~QQ~~|414<br>~~QQ~~|10,000<br>~~ne~~|689|Dual|
|**PSW12T-HD**<br>~~Po~~<br>~~es~~|2000<br>~~ee~~|137.9<br>~~es~~|6000<br>~~es~~|414.0<br>~~es~~|400<br>~~ee~~|27.6<br>~~ee~~|800<br>~~re~~|55.2<br>~~re~~|8000<br>~~QQ~~|551<br>~~QQ~~|10,000<br>~~ne~~|689|Dual|
|**1⁄4 FNPT 316 SS PRESSURE CONNECTION AND DIAPHRAGM, FKM O-RING, 1⁄8" ORIFICE, DUAL 5 A SPDT SWITCH**<br>~~es~~<br>~~ee~~<br>~~es es ee~~<br>~~reQQ~~<br>~~ne~~<br>~~PoC~~<br>~~CL~~||||||||||||||
|**PSW12V-AD**<br>~~PoC~~<br>~~po~~|9<br>~~CL~~|0.6<br>~~CL~~|35|2.4|2|0.1|7|0.5|600|41|1000|69|Dual|
|**PSW12V-BD**<br>~~PoC~~<br>~~po~~<br>~~PoC~~|25<br>~~CL~~<br>~~lr~~|1.7<br>~~CL~~<br>~~lr~~|65|4.5|3|0.2|10|0.7|600|41|1000|69|Dual|
|**PSW12V-CD**<br>~~po~~<br>~~PoC~~<br>~~Po~~<br>~~rt—C~~|50<br>~~lr~~|3.5<br>~~lr~~|150|10.3|5|0.3|15|1.0|600|41|1000|69|Dual|
|**PSW12V-DD**<br>~~PoC~~<br>~~Po~~<br>~~rt—C~~<br>~~PoE~~|100<br>~~lr~~<br>~~PoE~~|6.9<br>~~lr~~|350|24.1|15|1.0|50|3.4|600|41|1000|69|Dual|
|**PSW12V-ED**<br>~~Po~~<br>~~rt—C~~<br>~~PoE~~<br>~~pC~~|250<br>~~PoE~~|17.2|700|48.3|40|2.8|95|6.6|1500|103|3000|206|Dual|
|**PSW12V-FD**<br>~~PoE~~<br>~~pC~~<br>~~Po~~|400<br>~~PoE~~|27.6|1500|103.0|100|6.9|300|20.7|3000|206|4500|309|Dual|
|**PSW12V-GD**<br>~~pC~~<br>~~Po~~<br>~~Porclm~~|1000<br>~~lm~~|68.9|3200|220.6|100|6.9|500|34.5|6000|414|10,000|689|Dual|
|**PSW12V-HD**<br>~~Po~~<br>~~Porclm~~|2000<br>~~lm~~|137.9|6000|414.0|400|27.6|1000|69|8000|551|10,000|689|Dual|



_Comes complete with operator’s manual._ 

_**Ordering Examples: PSW12T-DS-GND,** single 5 A SPDT switch with PFA-coated diaphragm and external grounding screw._ _**PSW12V-ED,** dual 5 A SPDT switch with 316 SS diaphragm and FKM O-ring._ 

## **ACCESSORIES** 

|**MODEL NO.**|**DESCRIPTION**|
|---|---|
|**PSW12-CL**|Cover lock|
|**PSW12-MB**|Mounting|



**H-36**

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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