Industrial CG-31 1921 Alternator Screw In Type

Industrial CG-31 1921 Alternator Screw In Type is a mechanical alternator in Schneider Electric's Pumptrol family (model 9038CG31) designed to mechanically alternate the operation of two pumps or motors. This screw-in bushing device uses a NEMA 1 enclosure for closed-tank installations and features four normally closed DPST-DB contacts. It is specified for use with fluids in a closed tank—including fresh water, sea water, hydraulic oil, and corrosive fluids—at temperatures from 0 to 220 °F. Typical applications include dual-pump control and interlock scenarios where reliable alternation of two loads is required in industrial pumping systems.