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LF10-W series pressure switches provide reliable control for automatic water systems with time function. The switch is universally acceptable for water well pumps and pumping systems usage. LF10-WR can prevent pumps from starting while system pressure falls considerably below the cut-in pressure. It will automatically cut the water supply restoration. A manual reset lever will be decreased if system pressure is suitable for automatic operation. The simple design makes it easy to use for both professionals and normal users. MODEL Min ON (Cut-In)PSI Max Off (Cut-Out) PSI Differential PSI Factory Setting PSI ElectricalRating Pipe Fittings Contact Arrangement120VAC 240VAC LF10-WS1 15 80 15-30 20-3520A 12A 1/4" Male or Female NPTNCLF10-WS2 30100 20-3530-5020A 12A1/4" Male or Female NPTNCLF10-WS3 35150 30-4085-11520A 12A1/4" Male or Female NPTNC MODEL Max On(Cut-in) PSI Min Off (Cut-In)PSIDifferential PSI Factory Setting PSI ElectricalRating Pipe Fittings Contact Arrangement120VAC 240VAC LF10-WR1 80 15 15-30 35-2020A 12A 1/4" Male or Female NPTNOLF10-WR2 100 3025-35 50-3020A 12A1/4" Male or Female NPTNOLF10-WR3150 3530-40115-8520A 12A1/4" Male or Female NPTNOOther pipe fittingsare available on request. Stainless Steel Connection is optional