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Pressure Switches

Energize or de-energize electrical circuits as a function of whether the process pressure is no...
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Economical Differential Pressure Switches/Alarms

The PSW-180 Series differential pressure switch offers a blend of small size, excellent performance and environmental protection. The PSW-180 is available with switch contacts or ... Read More

PSW-180
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range Features
PSW-184
$151.00
14  In Stock
(1) 5 A SPDT
4 to 45 psi
Differential
1/4"
NPT Female
Fixed
1.0 psi
Polysulfone Fittings
PSW-181
$135.00
1  In Stock
(1) 5 A SPDT
1 to 10 psi
Differential
1/4"
NPT Female
Fixed
0.75 psi
Polysulfone Fittings
PSW-183
$151.00
5  In Stock
(1) 5 A SPDT
1 to 10 psi
Differential
1/4"
NPT Female
Fixed
0.75 psi
Brass Fittings
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General Purpose Controls with Choice of Dual or Triple Switches

The PSW-850 is a simple, economical control for processes which require multiple switching capabilities. Dual or triple-switch controls provide multi-outputs in applications such ... Read More

PSW-850
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range Features
PSW-855CJ
$507.00
1  In Stock
(2) 15 A SPDT
0 to 30 psi
Gauge
1/4"
NPT Female
Fixed
0.2 to 1.2 psi
Reference Adjustment
PSW-855CL
$507.00
Available
in 99 weeks
(2) 15 A SPDT
0 to 100 psi
Gauge
1/4"
NPT Female
Fixed
0.4 to 1.6 psi
Reference Adjustment
PSW-855DN
$489.00
Available
in 99 weeks
(2) 15 A SPDT
0 to 500 psi
Gauge
1/4"
NPT Female
Fixed
6 to 18 psi
Reference Adjustment
PSW-855CH
$492.00
Available
in 99 weeks
(2) 15 A SPDT
-15 to 20 psi
Compound Gauge
1/4"
NPT Female
Fixed
0.4 to 2.4 inHg
Reference Adjustment
PSW-856CH
$575.00
Available
in 99 weeks
(3) 15 A SPDT
-15 to 20 psi
Compound Gauge
1/4"
NPT Female
Fixed
0.4 to 2.4 inHg
Reference Adjustment
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Heavy Duty "Division 1" Industrial Pressure Switches

Designed for applications in hazardous atmospheres, PSW-400 Series Pressure Switches offer complete reliability due to a rugged, die-cast aluminum enclosure with waterproof gasket... Read More

PSW-400
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range Features
PSW-411
$695.00
5  In Stock
(1) 10 A SPDT
600 to 3,000 psi
Gauge
1/4"
NPT Female
Adjustable
200 to 2800 psi
Standard
PSW-408
$625.00
1  In Stock
(1) 10 A SPDT
40 to 200 psi
Gauge
1/4"
NPT Female
Adjustable
13 to 180 psi
Standard
PSW-404
$670.00
1  In Stock
(1) 10 A SPDT
30 to 150 inH2O
Gauge
1/4"
NPT Female
Adjustable
15 to 135 inH2O
Standard
PSW-423
$710.00
Available
in 4 weeks
(2) 15 A SPDT
12 to 60 inH2O
Gauge
1/4"
NPT Female
Fixed
0.5 to 1.3 inH2O
Standard
PSW-425
$665.00
Available
in 4 weeks
(2) 15 A SPDT
3 to 15 psi
Gauge
1/4"
NPT Female
Fixed
0.5 to 1 psi
Standard
  Load More Items from this family (21) ...
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NEMA-4X Watertight Pressure Switch for Harsh or Corrosive Environments

Ideal for use in harsh and corrosive environments, the PSW-300 Series pressure switches feature stainless steel or Buna-N diaphragm-sealed pistons or diaphragm actuators that prov... Read More

PSW-300
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range Features
PSW-345
$460.00
2  In Stock
(2) 15 A SPDT
3 to 15 psi
Gauge
1/4"
NPT Female
Fixed
0.7 to 1.4 psi
316 SS Diaphragm
PSW-328
$395.00
2  In Stock
(2) 15 A SPDT
40 to 200 psi
Gauge
1/4"
NPT Female
Fixed
1.4 to 5.6 psi
NEMA 4X, IP66 Enclosure
PSW-304
$405.00
Available
in 5 weeks
(1) 10 A SPDT
30 to 150 inH2O
Gauge
1/4"
NPT Female
Adjustable
18 to 135 inH2O
NEMA 4X, IP66 Enclosure
PSW-324
$435.00
Available
in 5 weeks
(2) 15 A SPDT
30 to 150 inH2O
Gauge
1/4"
NPT Female
Fixed
2.1 to 4.2 inH2O
NEMA 4X, IP66 Enclosure
PSW-329
$395.00
Available
in 5 weeks
(2) 15 A SPDT
80 to 400 psi
Gauge
1/4"
NPT Female
Fixed
6 to 11 psi
NEMA 4X, IP66 Enclosure
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NEMA-4X Differential Pressure Switches

SPECIFICATIONS Approval: UL listed, CSA certified Storage Temp: -29 to 66°C (-20 to 150°F) Ambient Temp. Limits: -29 to 66°C (... Read More

PSW-351-Series
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range Features
PSW-355
$640.00
1  In Stock
(1) 10 A SPDT
5 to 30 psi
Differential
1/4"
NPT Female
Adjustable
3 to 27 psi
NEMA 4X, IP66 Enclosure
PSW-351
$585.00
2  In Stock
(1) 10 A SPDT
5 to 30 inH2O
Differential
1/4"
NPT Female
Adjustable
4 to 27 inH2O
NEMA 4X, IP66 Enclosure
PSW-352
$585.00
Available
in 5 weeks
(1) 10 A SPDT
9 to 60 inH2O
Differential
1/4"
NPT Female
Adjustable
5 to 54 inH2O
NEMA 4X, IP66 Enclosure
PSW-353
$585.00
Available
in 5 weeks
(1) 10 A SPDT
15 to 100 inH2O
Differential
1/4"
NPT Female
Adjustable
8.5 to 90 inH2O
NEMA 4X, IP66 Enclosure
PSW-356
$640.00
Available
in 5 weeks
(1) 10 A SPDT
9 to 60 psi
Differential
1/4"
NPT Female
Adjustable
5 to 54 psi
NEMA 4X, IP66 Enclosure
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Stainless Steel Pressure Switches for Harsh Environments, Dual 15 A SPDT Switches

SPECIFICATIONS Electrical Rating:    15 A: 125/250/480 Vac    0.5 A: 125 Vdc    0.25 A: 250 Vdc Switch Output... Read More

PSW-370-Series
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range Features
PSW-372
$580.00
2  In Stock
(2) 15 A SPDT
3 to 15 psi
Gauge
1/4"
NPT Female
Fixed
2.4 to 3.6 psi
Stainless NEMA 4X, IP66 Enclosure
PSW-375
$580.00
2  In Stock
(2) 15 A SPDT
40 to 200 psi
Gauge
1/4"
NPT Female
Fixed
17 to 34 psi
Stainless NEMA 4X, IP66 Enclosure
PSW-371
$665.00
Available
in 5 weeks
(2) 15 A SPDT
22 to 150 inH2O
Gauge
1/4"
NPT Female
Fixed
8.4 to 19.2 inH2O
Stainless NEMA 4X, IP66 Enclosure
PSW-374
$580.00
Available
in 5 weeks
(2) 15 A SPDT
20 to 100 psi
Gauge
1/4"
NPT Female
Fixed
85 to 15.3 psi
Stainless NEMA 4X, IP66 Enclosure
PSW-373
$580.00
Available
in 5 weeks
(2) 15 A SPDT
6 to 30 psi
Gauge
1/4"
NPT Female
Fixed
2.4 to 6.8 psi
Stainless NEMA 4X, IP66 Enclosure
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General Purpose Differential Pressure Switches

PSW-150 Series differential switches are ideally suited for laboratory and industrial applications where a rugged, repeatable, and dependable switch is required. For ease of insta... Read More

PSW-150
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband
PSW-154
$545.00
3  In Stock
(1) 15 A DPDT
0 to 70 psi
Differential
1/4"
NPT Female
Fixed
PSW-152
$393.00
45  In Stock
(1) 15 A DPDT
0 to 25 psi
Differential
1/4"
NPT Female
Fixed
PSW-153
$565.00
Available
in 5 weeks
(1) 15 A DPDT
0 to 40 psi
Differential
1/4"
NPT Female
Fixed
PSW-155
$385.00
Available
in 5 weeks
(1) 15 A DPDT
10 to 90 psi
Differential
1/4"
NPT Female
Fixed
PSW-151
$565.00
Available
in 5 weeks
(1) 15 A DPDT
0 to 6 psi
Differential
1/4"
NPT Female
Fixed
PSW14
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range
PSW14A-CN
$122.00
Available
in 99 weeks
(1) 200 mA SPDT
0 to 5,800 psi
Gauge
1/4"
NPT Male
Adjustable
0 to 5,800 psi
PSW14B-AN
$133.00
Available
in 99 weeks
(2) 200 mA SPDT
0 to 145 psi
Gauge
1/4"
NPT Male
Fixed
0 to 22 psi
PSW14B-DN
$340.00
Available
in 99 weeks
(2) 200 mA SPDT
0 to 8,700 psi
Gauge
1/4"
NPT Male
Fixed
0 to 1,305 psi
PSW14A-AN
$122.00
Available
in 99 weeks
(1) 200 mA SPDT
0 to 145 psi
Gauge
1/4"
NPT Male
Adjustable
0 to 145 psi
PSW14A-DN
$330.00
Available
in 99 weeks
(1) 200 mA SPDT
0 to 8,700 psi
Gauge
1/4"
NPT Male
Adjustable
0 to 8,700 psi
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Solid State Switches for High Cycle Applications

OMEGA’s PSW601 series switches are designed to provide long stable life. They use a thin film sensor with a minimum life of 1 million cycles. Solid state circuitry analyzes the si... Read More

PSW-601
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband Deadband Range Features
PSW601B-5K
$490.00
Available
in 6 weeks
(1) 10 A SPDT
250 to 5,000 psi
Gauge
1/4"
NPT Female
Adjustable
254.8 to 4,762.5 psi
NEMA 4, IP65 Enclosure
PSW601B-100
$550.00
Available
in 6 weeks
(1) 10 A SPDT
5 to 100 psi
Gauge
1/4"
NPT Female
Adjustable
5.1 to 95.3 psi
NEMA 4, IP65 Enclosure
PSW601B-60
$495.00
Available
in 6 weeks
(1) 10 A SPDT
3 to 60 psi
Gauge
1/4"
NPT Female
Adjustable
3.1 to 57.2 psi
NEMA 4, IP65 Enclosure
PSW601B-1K
$550.00
Available
in 6 weeks
(1) 10 A SPDT
50 to 1,000 Psi
Gauge
1/4"
NPT Female
Adjustable
51 to 952.5 psi
NEMA 4, IP65 Enclosure
PSW601B-300
$550.00
Available
in 6 weeks
(1) 10 A SPDT
15 to 300 psi
Gauge
1/4"
NPT Female
Adjustable
15.3 to 285.8 psi
NEMA 4, IP65 Enclosure
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Differential Pressure Switch

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 ... Read More

PSW845
Product Number Switch Type Pressure Range Pressure Type Pressure Port Size Pressure Port Type Deadband
PSW845-3
$145.00
Available
in 4 weeks
(1) 250 mA SPDT
10 to 45 psi
Differential
1/4"
NPT Female
Fixed
PSW845-2
$145.00
Available
in 3 weeks
(1) 250 mA SPDT
5 to 25 psi
Differential
1/4"
NPT Female
Fixed
PSW845-1
$145.00
Available
in 4 weeks
(1) 250 mA SPDT
2 to 13 psi
Differential
1/4"
NPT Female
Fixed
PSW845-4
$145.00
Available
in 3 weeks
(1) 250 mA SPDT
20 to 150 psi
Differential
1/4"
NPT Female
Fixed
PSW845-5
$145.00
Available
in 4 weeks
(1) 250 mA SPDT
35 to 250 psi
Differential
1/4"
NPT Female
Fixed
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