Pressuretrol� Controllers, Auto recycle, 10 psi to 150 psi. Overview Provide operating control with automatic limit protection for pressure systems up to 300 psi (2068 kPa). Features Use with steam, air, noncombustible gases, or fluids non-corrosive to pressure sensing element. Models have snap-acting switching to open or close a circuit on pressure rise. Have adjustable differentials. Adjustments are made by screws on top of case. Mount using 1/4 inch -18 NPT internal pipe threads or surface mount through base of case. Ground screw terminal. Product Specifications Application Provide control of steam, air, non-combustible gases or non-corrosive fluids Dimensions (in.) 4 31/32 in. high x 4 1/2 in. wide x 2 3/4 in. deep Dimensions (mm) 126 mm high x 114 mm wide x 70 mm deep Mounting 1/4 in. NPT internal thread or surface mount through back of case Approvals, Underwriters Laboratories Inc. Listed: File No. MP466, Guide No. MBPR Approvals, Canadian Standards Association Certified: File No. LR1620, Guide No. 400-E-O Electrical Connections Screw terminals Contact Ratings 120 Vac Switch Contact-- 8.0 AFL, 48.0 ALR, 10.0 A resistive; 240 Vac Switch Contact-- 5.1 AFL, 30.6 ALR, 5.0 A resistive Operating Temperature Range (F) -35 F to +150 F Operating Temperature Range (C) -37 C to +66 C Approvals, Swiss RE Acceptable Sensor Element Stainless Steel diaphragm Operating Range (psi) 10 to 150 psi; 225 psi - Maximum Sustained Operating Range (kPa) 69 to 1034 kPa; 1151 kPa - Maximum Sustained Differential Pressure Range (psi) 10 to 22 psi Differential Pressure Range (kPa) 60 to 152 kPa Differential Type Subtractive Switch Operation Auto recycle Switching Action SPDT snap action, make R-W, break R-B on pressure rise Pipe Connection Main or High Pressure--1/4 in. NPT internal thread