Pressure Switches
General Purpose Industrial Pressure/Vacuum Switches
Discontinued Product!

PSW490

General Purpose Industrial Switches, Pressure/Vacuum Ranges

PSW490:Pressure Switches General Purpose Industrial Pressure/Vacuum SwitchesDiscontinued Product!

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•	Watertight, Corrosion-Resistant Case
•	Reliable in Harsh Environments
View related products - Pressure Switches

The PSW490 has been discontinued. Please see the PSW-100 SERIES as possible substitutes or contact our Pressure department.
OMEGA’s PSW490 Series of switches are designed to satisfy most industrial switch requirements. The actuators have been proven in more than 20 years of service worldwide. A Buna-N seal and SPDT switch is standard. Optional FKM or stainless steel seals extend media compatibility to most fluids, and either the hermetically sealed or dual SPDT switches will meet most switching applications.

SPECIFICATIONS
Switch: snap action SPDT switch
Electrical: Std: 15 A @125/250/480 Vac, 1 /2 A @ 125 Vdc; 1 /4 A @ 250 Vdc; 6 A @ 30 Vdc Hermetically sealed: (suffix "-HS") 11 A @ 125/250 Vac, 5A @ 30 Vdc
Process Temperature Range: Buna-N: -20 to 65°C (-4 to 149°F),
FKM : -5 to 150°C ( 23 to 302°F),
Stainless Steel:-20 to 150°C (-4 to 302°F)
Repeatability: ±1% Full Range
Proof Pressure: 400% minimum
Deadband: Buna-N see "To Order"
FKM: multiply Buna-N by 1.4,
Stainless Steel: multiply Buna-N by 1.7
Enclosure: Epoxy-coated aluminum. Meets NEMA-3, -4, -4x, -13 and IP66 requirements
Process Connection: 1 /2 NPT Male, 1 /4 NPT Female combination
Electrical Connections: 3 /4 NPT entry, screw terminals internal
Wetted Parts: 316 SS, Buna-N
Dimensions: psi ranges: 144 H x 102 W x 59 mm D (5.7 x 4 x 2.3");
inH2O Ranges: W & D = 130 mm (5.1")

To Order (Specify Model Number)

Part Number	Availability	Price	Description	Qty.
PSW490B-A		Consult sales	30 in Hg vacuum switch with 15 Amp SPDT contact, Buna-N seal, and 250 psi proof pressure	qty.

PSW490B-B		Consult sales	-15 to +15 in H2O switch with 15 Amp SPDT contact, Buna-N seal, and 20 psi proof pressure	qty.

PSW490B-C		Consult sales	-30 to +30 in H2O switch with 15 Amp SPDT contact, Buna-N seal, and 20 psi proof pressure	qty.

PSW490B-D		Consult sales	30 in Hg vacuum/15 psi switch with 15 Amp SPDT contact, Buna-N seal, and 250 psi proof pressure	qty.

PSW490B-E		Consult sales	30 in Hg vacuum/30 psi switch with 15 Amp SPDT contact, Buna-N seal, and 250 psi proof pressure	qty.

PSW490B-F		Consult sales	30 in Hg vacuum/60 psi switch with 15 Amp SPDT contact, Buna-N seal, and 250 psi proof pressure	qty.

PSW490B-G		Consult sales	10 in H2O switch with 15 Amp SPDT contact, Buna-N seal, and 20 psi proof pressure	qty.

PSW490B-H		Consult sales	30 in H2O switch with 15 Amp SPDT contact, Buna-N seal, and 20 psi proof pressure	qty.

PSW490B-I		Consult sales	60 in H2O switch with 15 Amp SPDT contact, Buna-N seal, and 20 psi proof pressure	qty.

PSW490B-J		Consult sales	100 in H2O switch with 15 Amp SPDT contact, Buna-N seal, and 20 psi proof pressure	qty.

PSW490B-K		Consult sales	150 in H2O switch with 15 Amp SPDT contact, Buna-N seal, and 20 psi proof pressure	qty.

PSW490B-L		Consult sales	15 psi switch with 15 Amp SPDT contact, Buna-N seal, and 500 psi proof pressure	qty.

PSW490B-M		Consult sales	20 psi switch with 15 Amp SPDT contact, Buna-N seal, and 500 psi proof pressure	qty.

PSW490B-N		Consult sales	60 psi switch with 15 Amp SPDT contact, Buna-N seal, and 500 psi proof pressure	qty.

PSW490B-O		Consult sales	100 psi switch with 15 Amp SPDT contact, Buna-N seal, and 1000 psi proof pressure	qty.

PSW490B-P		Consult sales	200 psi switch with 15 Amp SPDT contact, Buna-N seal, and 1000 psi proof pressure	qty.

PSW490B-Q		Consult sales	400 psi switch with 15 Amp SPDT contact, Buna-N seal, and 2400 psi proof pressure	qty.

PSW490B-R		Consult sales	600 psi switch with 15 Amp SPDT contact, Buna-N seal, and 2400 psi proof pressure	qty.

PSW490B-S		Consult sales	1000 psi switch with 15 Amp SPDT contact, Buna-N seal, and 12000 psi proof pressure	qty.

PSW490B-T		Consult sales	3000 psi switch with 15 Amp SPDT contact, Buna-N seal, and 12000 psi proof pressure	qty.

† All dollar amounts on this site are shown in US currency.

Note: Switches may generally be set between 15 and 100% of nominal range.

Part Number Builder

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PSW490

Option Descriptions

(1)

Actuator Seal

Select
B for Buna-N
V for FKM
SS for Stainless steel

(2)

Nominal Range

Select
-A for 30 in Hg vacuum
-B for +/- 15 in H2O
-C for +/- 30 in H2O
-D for 30 in Hg vacuum/15 psi
-E for 30 in Hg vacuum/30 psi
-F for 30 in Hg vacuum/60 psi
-G for 10 in H2O
-H for 30 in H2O
-I for 60 in H2O
-J for 100 in H2O
-K for 150 in H2O
-L for 15 psi
-M for 30 psi
-N for 60 psi
-O for 100 psi
-P for 200 psi
-Q for 400 psi
-R for 600 psi
-S for 1000 psi
-T for 3000 psi

(3)

Switch Options

Select
for 15 Amp 480 Vac SPDT leave blank
-DS for dual 15 Amp 480 Vac SPDT
-HS for hermetically sealed 11 amp 250 vac SPDT

NOTE: All combinations may not be valid, check spec sheet for valid part numbers.

Keywords:General Purpose Industrial Switches, Pressure/Vacuum Ranges, differential pressure sensors low pressure sensors piezoresistive pressure transducer

Pressure SwitchesGeneral Purpose Industrial Pressure/Vacuum SwitchesDiscontinued Product!

Pressure Switches
General Purpose Industrial Pressure/Vacuum Switches
Discontinued Product!