The 604VZM Series is a general purpose vacuum pressure switch, DPDT with a stainless steel port. It is easily mounted to bulkheads, corrosion resistant and ideal for wet conditions rated to NEMA 4 and IP65. It is constructed with an integral terminal box and switch design and easy set point adjustment. It is also UL certified with 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 1/2" NPT Process Connection Material Stainless Steel 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 1.7 to 14 PSIG Decreasing Pressure Range 0.5 to 12.8 PSIG