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NEMA 4X (IP66) PRESSURE
PSW-350SeriesDifRngFig.1
SWITCHES
PSW-300 Series:
Vacuum to 3000 psi
PSW-350 Series:
5 inH2O to 400 psid
PRESSURE SWITCHES
00
PSW-3
Series
U ±1% Setpoint
Repeatability
U Rugged Epoxy-
Coated NEMA 4X (IP66)
Watertight Enclosure
U Dependable Switch
Actuation Between the
2 Input Pressures
U High Static Pressure
SPECIFICATIONS
Approvals: UL listed, CSA certified
Storage Temp: -29 to 66°C (-20 to
150°F)
Ambient Temp Limits: -29 to 66°C
(-20 to 150°F); setpoint typically
shifts
+1% of range per 28°C (50°F) of
temperature change.
Enclosure: NEMA 4X (IP66)
and corrosion resistant
Setpoint Repeatability: ±1% of
range
Switch Output: 1 or 2 SPDT
switches
can be wired “normally open” or
“normally closed”
Electrical Rating:
10 A: 125/250 Vac
0.5 A: 125 Vdc
0.25 A: 250 Vdc
15 A: 125/250 Vac
PSW-355, shown
smaller than actual size.
105
(4.1)
151
(5.9)
57
(2.2)
64
(2.5)
1/4 NPT
HIGH PRESS.
INLET
Enclosure: Epoxy-coated
aluminum, gasketed
Weight: 0.9 kg (2 lb)
Electrical Connection:
3⁄4 FNPT
Pressure Connection:
1⁄4 FNPT; brass-plated carbon
steel for psid ranges; carbon steel
for H2O ranges; 1⁄2 NPT male for
vacuum to 600 psi;
1⁄4 FNPT for 1000 and 3000 psi
Connection Material:
Vac through inH20
ranges: carbon steel;
all psi ranges: 316 SS
Dimensions:
153 H x 105 W mm
(6 x 4.125"); 95 mm D (3.75")
for psi units; 114 mm D (4.5")
for inH2O units
3/4 NPT
0.125R
1/4 NPT
LOW PRESS.
INLET
ORDERING
SUFFIX DESCRIPTION
153
(6.0)
Dimmensions: mm (inch)
OPTIONS
-V FKM diaphragm
-T PTFE diaphragm
-SS SS diaphragm
-M
51
(2.0)
32
(1.3)
83
(3.3)
and O-ring
and O-ring
(psi units to 60 psid only)
Monel® (psi ranges
only)
3/4 NPT Conduct
Connection
95
(3.7)
H
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To Order
ADjUSTABLE RANGE
MODEL NO.
STANDARD METRIC
FNPT SINGLE SETPOINT, ADjUSTABLE DEADBAND, BUNA-N DIAPHRAGM, O-RING,
DEADBAND PROOF
STANDARD
UNITS
PRESSURE SWITCH
1
⁄
F
NPT CONNECTION
4
PSW-301 -6 to -30 inHg vac -20 to -100 kPa 6 to 24 250 psi 10 A SPDT
PSW-302 6 to 30 inH
PSW-303 12 to 60 inH
PSW-304 30 to 150 inH
O 1.5 to 7.5 kPa 4 to 27 20 psi 10 A SPDT
2
O 3 to 15 kPa 5 to 54 20 psi 10 A SPDT
2
O 7.4 to 37 kPa 18 to 135 20 psi 10 A SPDT
2
PSW-305 3 to 15 psi 20 to 100 kPa 2.5 to 13 500 psi 10 A SPDT
PSW-306 6 to 30 psi 40 to 200 kPa 3 to 18 500 psi 10 A SPDT
PSW-307 20 to 100 psi 140 to 700 kPa 10 to 90 1000 psi 10 A SPDT
PSW-308 40 to 200 psi 280 to 1400 kPa 18 to 180 1000 psi 10 A SPDT
PSW-309 80 to 400 psi 0 .56 to 2.8 MPa 45 to 360 2400 psi 10 A SPDT
PSW-310 200 to 1000 psi 1.4 to 7 MPa 160 to 900 12,000 psi 10 A SPDT
PSW-311 600 to 3000 psi 4.2 to 21 MPa 400 to 2600 12,000 psi 10 A SPDT
1
F
NPT DUAL SETPOINT, FIXED DEADBAND, BUNA-N DIAPHRAGM, O-RING,
⁄
FNPT CONNECTION
4
PSW-321 -6 to -30 inHg vac - 20 to -100 kP 0.7 to 1.4 250 psi Two 15 A SPDT
PSW-322 6 to 30 inH
PSW-323 12 to 60 inH
PSW-324 30 to 150 inH
O 1.5 to 7.5 kPa 0.7 to 1.4 20 psi Two 15 A SPDT
2
O 3 to 15 kPa 0.7 to 1.8 20 psi Two 15 A SPDT
2
O 7.4 to 37 kPa 2.1 to 4.2 20 psi Two 15 A SPDT
2
PSW-325 3 to 15 psi 20 to 100 kPa 0.7 to 1.4 500 psi Two 15 A SPDT
PSW-326 6 to 30 psi 40 to 200 kPa 0.7 to 2.1 500 psi Two 15 A SPDT
PSW-327 20 to 100 psi 140 to 700 kPa 1.4 to 3.5 1000 psi Two15 A SPDT
PSW-328 40 to 200 psi 280 to 1400 kPa 1.4 to 5.6 1000 psi Two 15 A SPDT
PSW-329 80 to 400 psi 0.56 to 2.8 MPa 6 to 11 2400 psi Two 15 A SPDT
PSW-330 200 to 1000 psi 1.4 to 7 MPa 10 to 42 12,000 psi Two 15 A SPDT
PSW-331 600 to 3000 psi 4.2 to 21 MPa 42 to 98 12,000 psi Two 15 A SPDT
1
1
⁄
F
NPT DUAL SETPOINT, FIXED DEADBAND, 316 SS DIAPHRAGM,
F
NPT DUAL SETPOINT, FIXED DEADBAND, 316 SS DIAPHRAGM,
⁄
FNPT CONNECTION
FNPT CONNECTION
4
4
PSW-345 3 to 15 psi 20 to100 kPa 0.7 to 1.4 500 psi Two 15 A SPDT
PSW-346 6 to 30 psi 40 to 200 kPa 1.7 to 2.8 500 psi Two 15 A SPDT
PSW-347 20 to 100 psi 140 to 700 kPa 2.8 to 5.6 1000 psi Two 15 A SPDT
PSW-348 40 to 200 psi 280 to 1400 kPa 4.2 to 11.2 1000 psi Two 15 A SPDT
To Order
MODEL
NO.
RANGE
UNITS
Single Setpoint, Adjustable Deadband, Buna-N Diaphragm, O-Ring,
ADJUSTABLE
PSW-351
PSW-352
PSW-353
PSW-354
PSW-355
PSW-356
PSW-357
PSW-358
5 to 30 inH
9 to 60 inH
15 to 100 inH
23 to 150 inH
5 to 30 psid 3 to 27 500 psi 2000 psi 10 A SPDT
9 to 60 psid 5 to 54 500 psi 2000 psi 10 A SPDT
30 to 200 psid 18 to 180 1000 psi 4000 psi 10 A SPDT
60 to 400 psid 45 to 360 1000 psi 8000 psi 10 A SPDT
Dual Setpoint, Fixed Deadband, Buna-N Diaphragm, O-Ring,
PSW-361
PSW-362
PSW-363
PSW-364
PSW-365
PSW-366
PSW-367
PSW-368
5 to 30 inH2O
9 to 60 inH
15 to 100 inH
23 to 150 inH
5 to 30 psid 1.0 to 2.1 500 psi 2000 psi Dual 15 A*
9 to 60 psid 1.4 to 2.8 500 psi 2000 psi Dual 15 A*
30 to 200 psid 1.4 to 5.6 1000 psi 4000 psi Dual 15 A*
60 to 400 psid 5.6 to 11 1000 psi 8000 psi Dual 15 A*
DEADBAND
STANDARD
PRESSURE
O
2
O
2
4 to 27 5.4 psi 21.6 psi 10 A SPDT
5 to 54 5.4 psi 21.6 psi 10 A SPDT
O
8.5 to 90 5.4 psi 21.6 psi 10 A SPDT
2
O
18 to 135 5.4 psi 21.6 psi 10 A SPDT
2
STATIC
WORKING
PRESSURE
PROOF
PRESSURE
1
⁄4 NPTF
0.7 to 1.4 5.4 psi 21.6 psi Dual 15 A*
O
0.7 to 2.0 5.4 psi 21.6 psi Dual 15 A*
2
O
1.4 to 2.8 5.4 psi 21.6 psi Dual 15 A*
2
O
2.4 to 4.2 5.4 psi 21.6 psi Dual 15 A*
2
1
⁄4 NPTF
SWITCH
"Pressure Switch Options (Add Suffix to Model
Number for additional cost):
Hermetically sealed 5 A 125/250 Vac switch for
extra protection in severe environments
single setpoint.
Ordering Example: PSW-345-PP,
hermetically sealed switches, range of 3 to 15
psi.
“-PP”,
dual setpoint.
dual
“-P”
,
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