The 604PM Series is a general purpose, all aluminum gage pressure switch, DPDT with a piston based port for hydraulic fluid applications. It is constructed with an integral terminal box and switch design and easy set point adjustment. It is also easily mounted to bulkheads and UL certified with NEMA 4 and IP65 rating. It has high vibration and shock resistance utilizing Dual Snap® disc spring technology. Applications include nonhazardous environments such as: • Power Generation • Rail Car • Fluid Management • Manufacturing Process • Utilities, Water Treatment and Waste • Chemical Refining and Processing • Heavy Vehicles • Safety Systems Environmental Approvals IP65, NEMA 4, NEMA 13, NACE, RoHS Industry Industrial Instrumentation Pressure Switch Environment Non-Hazardous Certification Agency Approvals UL, CE, CRN, CCC Operating Temperature Range -40° to 186 °F Process Connection Fitting Size Female 1/4" NPT Process Connection Material Aluminum Housing Enclosure Aluminum Electrical Connection Female 3/4" NPT Electrical Switch Type DPDT Voltage Electrical Rating VAC 0 to 250 VAC, 251 to 480 VAC Amperes Electrical Rating 0.5 to 5 A Fixed or Adjustable Set Point Adjustable Presetting Factory Set, Not Factory Set Tagging Mylar, Stainless Steel Accessories Manifold Increasing Pressure Range 20 to 200 PSIG, 170 to 1400 PSIG, 300 to 3000 PSIG, 2500 to 5000 PSIG Decreasing Pressure Range 10 to 188 PSIG, 180 to 2780 PSIG, 2220 to 4520 PSIG, 90 to 1230 PSIG Pressure Type Gage Media Oil Based Increasing Pressure Ranges 3 – 180 PSI, 180.01 – 3400 PSI, 3400.01 – 16000 PSI Decreasing Pressure Ranges 1.16 – 173 PSI, 173.01 – 3180 PSI, 3180.01 – 13500 PSI Maximum System Pressure 2000, 3000, 5000, 7500 Maximum Proof Pressure 3000, 5000, 7500, 10000 Process Connection Seal O-Ring Sealed Piston O-ring Buna N