The hazardous locations 646GE Series is a rugged, heavy duty, all aluminum gage pressure switch. Similar to the 604 Series in design, the 646GE Series is rated to 15 Amps and UL/CSA explosion proof, Class I, Groups A, B, C and D, and Class II Groups E, F and G certified. It comes with high vibration and shock resistance utilizing Dual Snap® disc spring technology. Applications include: • Oil & Gas • Power Generation • Fluid Management • Chemical Refining and Processing • Manufacturing Process • Utilities, Water Treatment and Waste • Safety Systems Environmental Approvals IP65, IP66, NEMA 4, NEMA 4X, NEMA 7, NEMA 9, NEMA 13, NACE, SIL, RoHS Industry Industrial Instrumentation Pressure Switch Environment Hazardous Certification Agency Approvals UL, CSA, CE, CRN, CCC, DUAL SEAL Operating Temperature Range -40° to 186 °F Process Connection Fitting Size Female 1/4" NPT Process Connection Material Aluminum Housing Enclosure Aluminum Electrical Connection Male 1/2" NPT Electrical Switch Type SPDT Voltage Electrical Rating VAC 0 to 250 VAC, 251 to 480 VAC Amperes Electrical Rating 0.2 to 15 A Junction box app 141-18, 141-19, 141-20, 141-28 Fixed or Adjustable Set Point Adjustable Presetting Factory Set, Not Factory Set Tagging Mylar, Stainless Steel Accessories Manifold Increasing Pressure Range 1.2 to 16 PSIG, 8 to 75 PSIG, 20 to 150 PSIG, 50 to 375 PSIG, 330 to 1000 PSIG Decreasing Pressure Range 22 to 347 PSIG, 265 to 935 PSIG, 3 to 70 PSIG, 8 to 138 PSIG, 0.4 to 15.2 PSIG Pressure Type Gage Media Oil Based, Non-Oil Based Increasing Pressure Ranges 1.16 – 2.99 PSI, 3 – 180 PSI, 180.01 – 3400 PSI Decreasing Pressure Ranges 0 – 1.15 PSI, 1.16 – 173 PSI, 173.01 – 3180 PSI Maximum System Pressure 500, 3000 Maximum Proof Pressure 750, 5000 Process Connection Seal O-Ring Sealed Diaphragm Diaphragm Polyimide Buna N