Industrial 801111303 Spring Pressure Switch JD-2

Antunes 801111303 JD-2 Red Spring Differential Pressure Switch is a compact air pressure switch with a durable die-cast aluminum housing designed for reliable differential sensing in HVACR and industrial controls. The red-spring JD-2R variant covers 0.1 to 24 in. W.C. (3 to 600 mm W.C.), and the unit features a visible ON/OFF indicator and dual scale in millimeters and inches water column for precise setpoint verification. Electrical outputs are rated to 10 A at 125 VAC, 5 A at 250 VAC, 1/8 HP at 125 VAC, 1/4 HP at 250 VAC, and 125 VA pilot duty, with UL MH8009 and CSA LR25144 certifications and FM serial 19797 on select models. Maximum surge pressure is 3 psi, and the operating ambient temperature range spans -40°F to 140°F (-40°C to 60°C). The overall dimensions are about 4 in W x 4 in D x 5 in H and it weighs roughly 3 lb, and the device is available in other spring colors to match OEM requirements. Typical applications include monitoring duct or combustion air pressures in commercial equipment and industrial systems, making it suitable for differential-pressure sensing in OEM installations that demand precision and reliability.