MPN: 1950-20-2F 4 to 20" w.c. Series 1950 Explosion-proof Differential Pressure Switch Features: Service: Air and non-combustible, compatible gases. Wetted Materials: Consult factory. Temperature Limits: -40 to 140°F (-40 to 60°C); 0 to 140°F (-17.8 to 60°C) for 1950P-8, 15, 25, and 50. -30 to 130°F (-34.4 to 54.4°C) for 1950-02. Pressure Limits: Continuous: 1950's - 45" w.c. (0.11 bar); 1950P's - 35 psi (2.41 bar); 1950P-50 only - 70 psi (4.83 bar). Surge: 1950's - 10 psi (0.69 bar); 1950P's - 50 psi (3.45 bar); 1950P-50 only - 90 psi (6.21 bar). Enclosure Rating: NEMA 3 (IP54), NEMA 7 and 9. Switch Type: Single-pole double-throw (SPDT). Electrical Rating: 15 A @ 125, 250, 480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. Electrical Connections: 3 screw type, common, normally open and normally closed. Process Connections: 1/8" female NPT. Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations. Set Point Adjustment: Screw type on top of housing. Weight: 3.25 lb (1.5 kg); 1950-02 model 4.4 lb (2 kg). Agency Approvals: CE, CSA, FM, UL.
