C437E2002 Honeywell Pressure Switch

The Honeywell C437E2002 Pressure Switch, Manual Reset, 1 in. to 26 in. water column. Pressure-actuated device used in industrial gas systems for safety shutoff. Series 2000 models have snap acting MicroSwitch™ snap switches to open a circuit on pressure rise or drop. Overview C437D,E Series 2000 Gas Pressure Switches are pressure-actuated devices used in industrial gas systems for safety shutoff. Series 2000 models have snap acting MicroSwitch™ snap switches to open a circuit on pressure rise or drop. Features C437 models have direct- and reverse-acting SPST (non-mercury) switching. Models intended for lockout applications must be manually reset before resuming operation. Models with pressure range of 1 to 26 in. wc (0.25 to 6.5 kPa)compensate for momentary surges in gas pressure with a restrictive orifice in inlet pressure channel. Impede tampering and provide dust-resistant operation with enclosed setting. Increase strength of control diaphragm with Buna N fiber-reinforced material. Two Buna-N fiber-reinforced seal-off diaphragms for added reliability. Clear glass cover allows observation of interior mechanism to aid in setting and checkout. Product Specifications Application Industrial gas system applications for safety shutoff, pressure control, or differential-pressure control. Dimensions (in.) 7 3/4 in. high x 6 1/4 in. wide x 3 7/16 in. deep Dimensions (mm) 197 mm high x 159 mm wide x 87 mm deep Materials Case: Die-cast aluminum Approvals, Underwriters Laboratories Inc. Listed: File No. MP2168, Guide No. MFHX Approvals, Canadian Standards Association Certified: File No. LR1620, Guide No. 380-W-1.16 Electrical Connections Screw terminals Temperature Ratings (C) 52 C – Maximum Ambient Temperature Ratings (F) 125 F – Maximum Ambient 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) 32 F to 125 F Operating Temperature Range (C) 0 C to 52 C Approvals, Swiss RE Acceptable Approvals, Factory Mutual Approved: Report No. 22018, 24127, J.I.IF4A3.AF Sensor Element BUNA N Diaphragm Operating Range (psi) 1 to 26 in. wc; 5.0 psi – Maximum Sustained Operating Range (kPa) 5 to 7.0 kPa; 34.5 kPa – Maximum Sustained Differential Pressure Range (psi) 1 3/4 in. wc Differential Pressure Range (kPa) 44 kPa Differential Type Additive Switch Operation Manual Reset Switching Action SPST, Break on Fall, non mercury Pipe Connection Main or High Pressure–1/2 in. NPT internal thread; Vent or Low pressure–1/8 in. NPT internal thread Honeywell.com