NEMA-4X Watertight Pressure Switch for Harsh or Corrosive Environments


NEMA-4X Watertight Pressure Switch for Harsh or Corrosive Environments | PSW-300

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  • UL Listed, CSA Certified
  • Low Pressure Ranges 30 inHg Vac to 150 inH2O
  • High Pressure Ranges 15 to 3000 psi
  • Buna-N or 316SS Diaphragm
  • 10 A SPDT Switch
  • Tamper/Vibration Resistant Setpoint Adjustment 20 to 100% of Range
  • Fixed or Adjustable Deadband
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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 provide repeatability of ±1% of range. Standard design allows easy access to switches. For versatility, single setpoint with adjustable deadband or dual, independently adjustable setpoints with fixed deadband may be chosen.

Approval: 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 watertight and corrosion resistant
Setpoint Repeatability: ±1% of range
Switch Output: 1 or 2 SPDT
Electrical Rating:
   10 A: 125/250 Vac
   0.5 A: 125 Vdc
   0.25 A: 250 Vac
   15 A: 125/250 Vac
Enclosure: Epoxy coated aluminum, gasketed
Weight: 0.9 kg (2 lb)
Electrical Connection: 3/4 NPT female
Pressure Connection: 1/4 NPT female; 1/2 NPT Male for vacuum to 600 psi; 1/4 NPT female for 1000 and 3000 psi
Connection Material: Vac through inH2O ranges - carbon steel; All psi ranges - 316SS
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