# Pressure Switch, Gauge, 1/2" FNPT, 0 psi, 100 psi, DPDT, 480 VAC
**URL**: https://novapart.co/products/PSW-704/pressure-switch-gauge-1-2-fnpt-0-psi-100-dpdt-480
**SKU**: PSW-704
**Manufacturer**: OMEGA
**Category**: Sensors & Transducers || Sensors || Pressure Sensors, Transducers || Pressure Switches
**Price**: €1965.3300
**Stock**: 10+
**Lead Time**: 43 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | Lead (04-Feb-2026) |
| Deadband Max | 0.8psi |
| Deadband Min | 0.2psi |
| Pressure Type | Gauge |
| Product Range | PSW-700 Series |
| Sensor Mounting | Panel / Chassis |
| Pressure Port Size | 1/2" |
| Pressure Port Type | 1/2" FNPT |
| Contact Configuration | DPDT |
| Electrical Connection | Screw |
| Switching Current Max | 15A |
| Switching Voltage Max | 480VAC |
| Operating Pressure Max | 100psi |
| Operating Pressure Min | 0psi |
| Pressure Fitting Style | 1/2" FNPT |
| Operating Temperature Max | 71°C |
| Operating Temperature Min | -50°C |
| Transducer Connection / Termination | 3/4" NPT, Screw |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3867906/)
## _**HEAVY-DUTY INDUSTRIAL SWITCHES SINgLE oR DUAL SETPoINT, INTERNAL oR EXTERNAL ADJUSTMENT**_
**==> picture [292 x 517] intentionally omitted <==**
**----- Start of picture text -----**
EOMEG, ~ be \ _
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=
1/4 NPT
PSW-701, 711-714 —— er’
PSW-722, ±10 inH2O
range, shown much
smaller than actual size.
1/2 NPT
PSW-702-704, 708, 709 oI
1/2 NPT
PSW-731-735
1 /2 NPT
PSW-721-72
" } MW a
Wd 1/4 NPT —_
PSW-710, 715-717
1/4 NPT (F)
See switch
accessories online
for audible alarms
and relay modules.
**----- End of picture text -----**
## _**30 inHg Vacuum to 3000 psi**_
## _**PSW-700 Series**_
U **Division 1 Rating**
- U **Single or Dual Setpoints, Tamper Resistant**
- U **Heavy-Duty Enclosure**
- U **Rated NEMA 4X, 7, 9 (IP66)**
- U **Terminal Block Wiring**
- U **High-Temperature Operation to 200°C (392°F) Process Temperature (Stainless Steel Model Only)**
PSW-700 Series pressure switches are built for the rugged industrial setting. The internal setpoints allow adjustments while keeping the electrical component isolated from the environment. Both the internal and external setpoints have a range scale, allowing fast, easy setup.
## **SPECIFICATIONS**
**Approvals:** UL listed; Class I, Division 1 and 2, Groups B, C and D; Class II, Groups E, F and G; Class III
**Repeatability:** ±1% range
**Process Temperature: Stainless Steel:** -57 to 204°C
(-70 to 400°F)
**Brass:** -40 to 149°C (-40 to 300°F) **Buna-N:** -23 to 93°C (-10 to 200°F)
**Enclosure:** Low copper-cast epoxy-coated aluminum **Electrical Connection:**[3] ⁄4 NPT conduit; internal screw terminals
## **Ambient Temperature:**
-50 to 71°C (-58 to 160°F), except for models 703 to 705, which are -18 to 71°C (0 to 160°F). Setpoint typically shifts less than 1% of range for a 28°C (50°F) ambient temperature change.
**Dimensions:**
**==> picture [54 x 33] intentionally omitted <==**
**----- Start of picture text -----**
Dual external
setpoint
calibration
adjustment
**----- End of picture text -----**
**psi Ranges:** 230 (max) H x 125 W x 108 mm D (9 x 4.9 x 4.3") **H2O Ranges:**
**Shock:** Setpoint repeats after 15 g, 10 ms duration
**Vibration:** Setpoint repeats after 2.5 g at 5 to 500 Hz **Output:** 1 SPDT or 2 SPDT 15 A 125/250/480 Vac
W and D = 153 mm (6") **Weight:** Approx. 1.7 kg (4 lb)
**H-33**
**H**
## _**INDUSTRIAL SWITCHES**_
## **PSW-707, 0 to 500 psi range, shown smaller than actual size**
|**To Order**
~~J~~|**To Order**
~~J~~|**To Order**
~~J~~|**To Order**
~~J~~|**To Order**
~~J~~|**To Order**
~~J~~|**To Order**
~~J~~|
|---|---|---|---|---|---|---|
|**MODEl NO.**|**RANGE**||**DEADBAND**
**STANDARD UNITS**|**PROOF**
**PRESSURE**|**SWITCH**|**DIAl**
**GRADUATION**|
||**STANDARD**|**METRIC**|||||
|**SINGlE SETPOINT, FIXED DEADBAND, WElDED 316l SS DIAPHRAGM, 1⁄2 FNPT PRESSURE CONNECTION**
~~**G**e~~
~~GG~~
~~ee~~|||||||
|**PSW-721**
~~se~~
~~ee~~|-300 to 0 inH2O
~~se~~
|-747 to 0 mbar
~~se~~
~~**G**e~~|0.2 to 15 inH2O
~~se~~
~~GG~~|100psi
~~se~~
~~GG~~|15 A SPDT
~~se~~
~~GG~~|Blind adj
~~se~~|
|**PSW-722**
~~ee~~
~~es~~|-10 to 10 inH2O
~~a~~
~~es~~|-25 to 25 mbar
~~**G**e~~
|0.1 to 0.6 inH2O
~~GG~~
|100psi
~~GG~~
~~C~~
|15 A SPDT
~~GG~~
~~C~~
|Blind adj
~~C~~
|
|**PSW-723**
~~ee~~
~~es~~
~~es~~|-50 to 50 inH2O
~~a~~
~~esGG~~
~~es~~|-125 to 125 mbar
~~**G**e~~
~~GG~~
~~Ge~~
|0.1 to 3 inH2O
~~GG~~
~~GG~~
~~GO~~
|100psi
~~GG~~
~~C~~
~~GG~~
~~GO~~
|15 A SPDT
~~GG~~
~~C~~
~~GG~~
~~GO~~
|Blind adj
~~C~~
~~GG~~
|
|**PSW-724**
~~es~~
~~se~~
~~es~~|0.5 to 5 inH2O
~~es~~
~~se~~
~~es~~|1.25 to 12.5 mbar
~~se~~
~~Ge~~
|0.1 to 0.3 inH2O
~~se~~
~~GO~~
|100psi
~~se~~
~~GO~~
|15 A SPDT
~~se~~
~~GO~~
|Blind adj
~~se~~
|
|**PSW-725**
~~es~~|2.5 to 50 inH2O
~~esGO~~|6 to 125 mbar
~~Ge~~
~~GO~~
~~Ge~~|0.1 to 0.8 inH2O
~~GO~~
~~GO~~
~~GO~~|100psi
~~GO~~
~~GO~~
~~GO~~|15 A SPDT
~~GO~~
~~GO~~
~~GO~~|Blind adj
~~GO~~|
|**PSW-726**
~~es~~
~~se~~|10 to 250 inH2O
~~es~~
~~se~~|25 to 622 mbar
~~Ge~~
~~se~~
~~Ge~~|0.1 to 10 inH2O
~~GO~~
~~se~~
~~GO~~|100psi
~~GO~~
~~se~~
~~GO~~|15 A SPDT
~~GO~~
~~se~~
~~GO~~|Blind adj
~~se~~|
|**PSW-731**
~~eG~~|5 to 30psi
~~eG~~|0.3 to 2.1 bar
~~Ge~~
~~eG~~|1 to 6psi
~~GO~~
~~GG~~|2500psi
~~GO~~
~~GG~~|15 A SPDT
~~GO~~
~~GG~~|Blind adj|
|**PSW-732**
~~eG~~
~~RG~~
~~es~~|10 to 100psi
~~eG~~
~~RG~~
~~es~~|0.7 to 7 bar
~~eG~~
~~RG~~
~~Ge~~
|1 to 15psi
~~GG~~
~~GG~~
~~GO~~
|2500psi
~~GG~~
~~GG~~
~~GO~~
|15 A SPDT
~~GG~~
~~GG~~
~~GO~~
|Blind adj
|
|**PSW-733**
~~se~~
~~es~~|15 to 300psi
~~se~~
~~es~~|1 to 21 bar
~~se~~
~~Ge~~
|3 to 25psi
~~se~~
~~GO~~
|2500psi
~~se~~
~~GO~~
|15 A SPDT
~~se~~
~~GO~~
|Blind adj
~~se~~
|
|**PSW-734**
~~es~~
~~a~~|20 to 500psi
~~esGO~~
~~a~~|1.4 to 34.5 bar
~~Ge~~
~~GO~~
~~ee~~|4 to 45psi
~~GO~~
~~GO~~
~~ers~~|2500psi
~~GO~~
~~GO~~
~~ers~~|15 A SPDT
~~GO~~
~~GO~~
~~ers~~|Blind adj
~~GO~~
~~ers~~|
|**PSW-735**
~~es~~
~~a~~|80 to 1700psi
~~es~~
~~a~~|5.5 to 117 bar
~~Ge ~~
~~ee~~|5 to 150psi
~~GO~~
~~ers~~|2500psi
~~GO~~
~~ers~~|15 A SPDT
~~GO~~
~~ers~~|Blind adj
~~ers~~|
|**DUAl SETPOINT, EXTERNAl CAlIBRATED ADjUSTMENT, SEAlED BRASS BEllOWS,**
**1⁄4 FNPT NICkEl-PlATED BRASS PRESSURE CONNECTION**
~~a a~~
~~ee ers~~|||||||
|**PSW-701**
~~GC~~
~~es~~|30 inHgvac to 0psi
~~GC~~
~~es~~|1.02 to 0 bar
~~GC~~
|0.2 to 0.9 inHg
~~GC~~
|30 inHg
~~GC~~
|(2)15 A SPDT
~~GC~~
|0.5 inHg
~~GC~~
|
|**PSW-711**
~~GC~~
~~es~~
~~es~~|30 inHgvac to 20psi
~~GC~~
~~esGGG~~|-1 to 1.4 bar
~~GC~~
~~GGG~~|0.2 to 1.2 inHg
~~GC~~
~~GGG~~|25psi
~~GC~~
~~GGG~~|(2)15 A SPDT
~~GC~~
~~GGG~~|1 inHg& 0.5psi
~~GC~~
~~GGG~~|
|**PSW-712**
~~es~~
~~es~~
~~Rs~~|0 to 30psi
~~esGGG~~
~~eG~~
~~Rs~~|0 to 2 bar
~~GGG~~
~~eG~~|0.1 to 0.6psi
~~GGG~~
~~**G**~~|40psi
~~GGG~~
~~**G**G~~|(2)15 A SPDT
~~GGG~~
~~G~~|0.5psi
~~GGG~~
~~G~~|
|**PSW-713**
~~es~~
~~Rs~~
~~a~~|0 to 100psi
~~GGG~~
~~eG~~
~~Rs~~
~~a~~|0 to 6.9 bar
~~GGG~~
~~eG~~
~~Ge~~
~~es es~~|0.2 to 0.8psi
~~GGG~~
~~**G**~~
~~es~~|125psi
~~GGG~~
~~**G**G~~
~~O~~
~~es~~|(2)15 A SPDT
~~GGG~~
~~G~~
~~O~~|2psi
~~GGG~~
~~G~~
~~O~~|
|**PSW-714**
~~Rs~~
~~a~~|0 to 200psi
~~eG~~
~~Rs~~
~~a~~|0 to 13.8 bar
~~eG ~~
~~es es~~|0.3 to 2psi
~~**G**~~
~~es~~|200psi
~~**G**G~~
~~es~~|(2)15 A SPDT
~~G~~|5psi
~~G~~|
|**DUAl SETPOINT, EXTERNAl CAlIBRATED ADjUSTMENT, WElDED 316 SS BEllOWS,**
**1⁄2 FNPT PRESSURE CONNECTION**
~~a a es es es~~|||||||
|**PSW-702**
~~ss~~
~~es~~|0 to 20psi
~~ss~~
~~es~~|0 to 1.4 bar
~~GGG~~
|0.1 to 0.5
~~GGG~~
|25psi
~~GGG~~
|(2)15 A SPDT
~~GGG~~
|0.5 inHg
|
|**PSW-703**
~~es~~
~~es~~|0 to 30psi
~~esGO~~|0 to 2 bar
~~GO~~|0.1 to 0.6
~~GO~~|40psi
~~GO~~|(2)15 A SPDT
~~GO~~|0.5psi
~~GO~~|
|**PSW-704**
~~es~~
~~es~~|0 to 100psi
~~esGO~~
~~eG~~|0 to 6.9 bar
~~GO~~
~~eG ~~|0.2 to 0.8
~~GO~~
~~GG~~|125psi
~~GO~~
~~GG~~|(2)15 A SPDT
~~GO~~
~~GG~~|2psi
~~GO~~
~~GG~~|
|**PSW-708**
~~es~~
~~eG~~
~~a~~|30 inHgvac to 20psi
~~GO~~
~~eG~~
~~ee ee~~|-1 to 1.4 bar
~~GO~~
~~eG~~
~~ee~~|0.2 to 1.2 inHg
~~GO~~
~~GG~~
~~es~~|25psi
~~GO~~
~~GG~~|(2)15 A SPDT
~~GO~~
~~GG~~|1 inHg& 0.5psi
~~GO~~|
|**PSW-709**
~~a~~|0 to 200psi
~~ee ee~~|0 to 13.8 bar
~~ee~~|0.3 to 2psi
~~es~~|200psi|(2)15 A SPDT|5psi|
|**DUAl SETPOINT, EXTERNAl CAlIBRATED ADjUSTMENT, WElDED 316 SS BEllOWS,**
**1⁄4 FNPT PRESSURE CONNECTION**
~~a~~
~~ee ee~~
~~es~~
~~esOG~~|||||||
|**PSW-705**
~~es~~
~~Rs~~|0 to 200psi
~~OG~~
~~Rs~~|0 to 13.8 bar
~~OG~~
~~Ge~~|1.5 to 8
~~OG~~
~~GO~~|250psi
~~OG~~
~~GO~~|(2)15 A SPDT
~~OG~~
~~GO~~|5psi
~~OG~~
~~GO~~|
|**PSW-706**
~~es~~
~~Rs~~
~~a~~|0 to 300psi
~~OG~~
~~Rs~~
~~a~~|0 to 20.7 bar
~~OG~~
~~Ge~~
~~es es~~|2 to 9
~~OG~~
~~GO~~
~~es~~|350psi
~~OG~~
~~GO~~
~~es~~|(2)15 A SPDT
~~OG~~
~~GO~~|10psi
~~OG~~
~~GO~~|
|**PSW-707**
~~Rs~~
~~a~~|0 to 500psi
~~Rs~~
~~a~~|0 to 34.5 bar
~~Ge ~~
~~es es~~|3 to 12
~~GO~~
~~es~~|575psi
~~GO~~
~~es~~|(2)15 A SPDT
~~GO~~|10psi
~~GO~~|
|**DUAl SETPOINT, EXTERNAl CAlIBRATED ADjUSTMENT, FIXED DEADBAND, BUNA-N O-RING, SS PISTON,**
**1⁄4 FNPT 303 SS PRESSURE CONNECTION**
~~a a es es es~~
~~a~~
~~ee ee~~
~~se~~|||||||
|**PSW-710**
~~a~~|125 to 3000psi
~~ee ee~~|8.6 to 207 bar
~~ee~~|40 to 250psi
~~se~~|10,000psi
~~se~~|(2)15 A SPDT|50psi|
|**DUAl SETPOINT, EXTERNAl CAlIBRATED ADjUSTMENT, FIXED DEADBAND, BUNA-N DIAPHRAGM AND O-RING,**
**1⁄4 FNPT NICkEl-PlATED PRESSURE CONNECTION**
~~a~~
~~ee ee~~
~~se~~|||||||
|**PSW-715**
~~se~~
~~Re~~|30 to 300psi
~~se~~
|2 to 21 bar
~~GG~~
~~**G**e~~|2 to 7psi
~~GG~~
~~OG~~|1000psi
~~GG~~
~~OG~~|(2)15 A SPDT
~~OG~~|10psi|
|**PSW-716**
~~se~~
~~Re~~|50 to 500psi
~~se~~
|3.5 to 34.5 bar
~~se~~
~~**G**e~~|3 to 12psi
~~se~~
~~OG~~|2500psi
~~se~~
~~OG~~|(2)15 A SPDT
~~se~~
~~OG~~|10psi
~~se~~|
|**PSW-717**
~~Re~~|200 to 1000psi
~~a~~|13.8 to 69 bar
~~**G**e~~|5 to 25psi
~~OG~~|2500psi
~~OG~~
~~C~~|(2)15 A SPDT
~~OG~~
~~C~~|25psi
~~C~~|
_**Ordering Example: PSW-703-X6B,** dual-setpoint 30 psi switch with welded SS diaphragm, specially cleaned for oxygen service._
**H-34**
## Links
- [View this product on Novapart](https://novapart.co/products/PSW-704/pressure-switch-gauge-1-2-fnpt-0-psi-100-dpdt-480)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/omega/psw-704/pressure-switch-100psi-1port-1/dp/3867906)
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