OMEGA

PSW-401 Heavy Duty Industrial NEMA-9 Pressure Switch

-30 to -6 inHg, adjustable deadband

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PSW 401 Heavy Duty Industrial NEMA 9 Pressure Switch 13716

 Designed for applications in hazardous atmospheres, PSW-400 Series Pressure Switches offer complete reliability due to a rugged, die-cast aluminum enclosure with waterproof gaskets and two separate chambers for electronics and actuator. Single or dual setpoints are available, with all critical parts made of stainless steel. In addition, the PSW-400 Series employs vibration-resistant setpoints and a calibrated scale.

 
• Dual Chamber Design Isolates Electronics from Pressure Media
• Heavy Duty Cast Aluminum with Corrosion-Resistant Epoxy Coating
• Meets NEMA-7 and -9 Classifications
• Gasketed Covers
Setpoint Repeatability±1% of range
Switch Output1 or 2 SPDT switch can be wired "normally open" or "normally closed"
Electrical Rating10 A: 125/250 Vac; 0.5 A: 125 Vdc; 0.25 A: 250 Vdc; 15 A: 125/250 Vac. Optional hermetically sealed 5 A: 125/250 Vac
EnclosureDual chamber epoxy-coated cast aluminum, gasketed
Electrical Connection2 ea. 3/4 NPT electrical conduit hubs
Pressure Connection1/4 NPT female; vacuum to 600 psi; 1/2 NPT; Male 1/4 NPT female for 1000 to 3000 psi
Connection MaterialVacuum thru inches H2O ranges; carbon steel All psi ranges; 316 SS
Dimensionspsi ranges: 206 (max) H x 140 W x 70 mm D (from Center line) (7.1 H x 5.5 W x 2.8" D from Center Line) inH2O ranges: W & D = 140 mm (5.5")
Weight2.7 kg (6 lb)
ApprovalUL listed, Class I, Divisions 1 and 2, Groups B, C, D. Class II, Divisions 1 and 2, Groups E, F, G CSA certified
Storage Temp-29 to 65°C (-20 to 150°F)
Ambient Temp. Limits-29 to 65°C (-20 to 150°F)
Process Temp. Limits
SS149°C (300°F)
Buna-N65°C (150°F)
Enclosure ClassificationNEMA-7, -9 hazardous location, explosion proof, dust ignition proof

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