OMEGA’s new modular series general purpose compact
pressure switches, offer a proven design for
stationary or mobile hydraulic applications.
Applications include factory automation, balers,
compactors, overload controls, machine tools,
hydraulic power packs, railway, and marine
applications. PSW8 series is available in a wide
range of configurations. Low pressure ranges
feature a diaphragm pressure switch design.
Higher pressure ranges feature a compact piston
design. A SPDT micro switch will change state on
increasing pressure at your set-point, and will reset
when your pressure decreases back below the
set-point by the amount of the deadband.
SPECIFICATIONS Set-Point Repeatability: Diaphragm Models: ±2% typical Piston Models: ±1% typical Setpoint Adjustment: Upon delivery, set-point is in the middle of the adjustable range. Turn adjustment screw CW to increase, and CCW to decrease. Hysteresis/Deadband: Less than or equal to 15% of maximum adjustable range Contact Rating: 1 Amp: Gold-plated 0.1 A @ 125 Vac, 01. A @ 30 Vdc 5 Amp: Silver 3 A @ 250 Vac, 5 A @ 120 Vac or 0.4 A @ 120 Vdc Wiring: Pin 1: Common Pin 2: Normally closed Pin 3: Normally open Switching Frequency: Maximum 30/minimum for diaphragm models; maximum 60/minimum for piston models Ambient Temperature Range: Diaphragm Models: -20 to 80°C (-4 to 176°F) Piston Models: -40 to 80°C (-40 to 176°F) Wetted Parts: Process Fitting: 304 SS Housing: Aluminum die-cast 230 Seals and Diaphragms: See table, Buna-N or FKM. EPDM or Neoprene (available upon request, consult engineering) Adjustment Screw: 300 SS (HEX5) Approvals: UL/cULus(CSA) Environmental: IP65 Shipping Weight: 620 g (1.36 lb)
† All prices on this site are shown in Singapore Dollars.
Note: Comes complete with operator’s manual. Ordering Example: (1) PSW8-AD1DB Pressure switch with 1/4 NPT female fitting, 75 to 2610 psi (5 to 180 BAR) range, 1 amp gold contacts, DIN connector and Buna -N seal, SGD140.00
Part Number Builder
Select A for 1/4 NPT female C for 1/8 NPT female E for 7/16-20 UNF (SAE-4 O-ring boss) 2 for G 1/4 female
Setpoint Range (increasing)
Select A for 8.7 to 87 psi (0.6 to 6.0 bar) B for 45 to 290 psi (3.1 to 20 bar) C for 60 to 650 psi (4.1 to 45 bar) D for 75 to 2610 psi (5 to 180 bar) E for 750 to 5000 psi (50 to 350 bar) F for 1200 to 8700 psi (80 to 600 bar)
Select 1 for 1 amp gold contacts 5 for 5 amp silver contacts
Select D for DIN EN 175301-803 (DIN 43650) size A 6-8 mm cable M for M12x21 connector
Select B for Buna-N (NBR) V for FKM
NOTE: All combinations may not be valid, check spec sheet for valid part numbers.