{"id":8088894931124,"title":"Red Lion 30-50 PSI M4 Low Pressure Pump Protection Cut-Off Switch for Well Pumps and Jet Pumps, Black, 640134","handle":"red-lion-30-50-psi-m4-low-pressure-pump-protection-cut-off-switch-for-well-pumps-and-jet-pumps-black-640134","description":"\u003ch3\u003eRed Lion 30-50 PSI M4 Low Pressure Pump Protection Cut-Off Switch for Well Pumps and Jet Pumps, Black, 640134\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe Red Lion 640134 Low Pressure Cut-off Switch is designed to protect your\npump from running dry. If the water level in the well runs too low, the\npressure will drop, this switch detects a drop in the water pressure and turns\nthe pump off when the pressure falls approximately 10 PSI. Running a pump dry\ncan severely damage a pump, melting the impeller, which prevents the impeller\nfrom turning. This can cause the motor to burn out. Protect your\ninvestiment!Allow your well time to recover. To reset the pump, prime the pump\nand hold the lever down manually until the pump kicks in. This switch is\nequipped with 1\/4-inch female NPT threading at the bottom of the unit and\nattaches easily to the pump or the piping.This switch can be used to control\nshallow well jet pumps, convertible jet pumps, deep well pumps, and\ncentrifugal pumps.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003ePROTECTS YOUR PUMP: running a pump without water can severely damage a pump; this switch automatically shuts pump off when pressure decreases 10 PSI which prevents the pump from running dry\u003c\/li\u003e\n \u003cli\u003eM4 TYPE: has manual reset lever and 1\/4-inch Female NPT threading at the bottom of the unit; once well has recovered, hold down lever to manually re-start pump\u003c\/li\u003e\n \u003cli\u003ePRESET FOR 30-50 PSI OPERATION: cut in pressure = 30 PSI; cut-off pressure = 50 PSI, adjustable\u003c\/li\u003e\n \u003cli\u003eLIMITATIONS: designed for 115 Volt pumps up to 1.5 HP and maximum 20 Amps, or 230 Volt pumps up to 3 HP and 17 Amps\u003c\/li\u003e\n \u003cli\u003eADJUSTABLE CUT-IN\/OUT PRESSURE: see product label under cover for adjustment instructions\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-07-21T17:47:28+10:00","created_at":"2026-07-21T17:03:21+10:00","vendor":"Red Lion","type":"Pressure Switches","tags":["home_industrial_July2026"],"price":21500,"price_min":21500,"price_max":21500,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44288544112820,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B0057PFRDS","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Red Lion 30-50 PSI M4 Low Pressure Pump Protection Cut-Off Switch for Well Pumps and Jet Pumps, Black, 640134","public_title":null,"options":["Default Title"],"price":21500,"weight":400,"compare_at_price":null,"inventory_management":"shopify","barcode":"010121130814","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/auspowers.com\/cdn\/shop\/files\/B0057PFRDS.jpg?v=1784617404","\/\/auspowers.com\/cdn\/shop\/files\/814WgYr8RdL.jpg?v=1784617404","\/\/auspowers.com\/cdn\/shop\/files\/816KF_0qaWL.jpg?v=1784617404","\/\/auspowers.com\/cdn\/shop\/files\/81X5QmIVeKL.jpg?v=1784617404","\/\/auspowers.com\/cdn\/shop\/files\/91A5_j0pvSL.jpg?v=1784617404","\/\/auspowers.com\/cdn\/shop\/files\/81xopqWXE6L.jpg?v=1784617404"],"featured_image":"\/\/auspowers.com\/cdn\/shop\/files\/B0057PFRDS.jpg?v=1784617404","options":["Title"],"media":[{"alt":null,"id":33130960945332,"position":1,"preview_image":{"aspect_ratio":1.014,"height":2525,"width":2560,"src":"\/\/auspowers.com\/cdn\/shop\/files\/B0057PFRDS.jpg?v=1784617404"},"aspect_ratio":1.014,"height":2525,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/B0057PFRDS.jpg?v=1784617404","width":2560},{"alt":null,"id":33130960978100,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/auspowers.com\/cdn\/shop\/files\/814WgYr8RdL.jpg?v=1784617404"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/814WgYr8RdL.jpg?v=1784617404","width":2560},{"alt":null,"id":33130961010868,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/auspowers.com\/cdn\/shop\/files\/816KF_0qaWL.jpg?v=1784617404"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/816KF_0qaWL.jpg?v=1784617404","width":2560},{"alt":null,"id":33130961043636,"position":4,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/auspowers.com\/cdn\/shop\/files\/81X5QmIVeKL.jpg?v=1784617404"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/81X5QmIVeKL.jpg?v=1784617404","width":2560},{"alt":null,"id":33130961076404,"position":5,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/auspowers.com\/cdn\/shop\/files\/91A5_j0pvSL.jpg?v=1784617404"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/91A5_j0pvSL.jpg?v=1784617404","width":2560},{"alt":null,"id":33130961109172,"position":6,"preview_image":{"aspect_ratio":1.0,"height":2560,"width":2560,"src":"\/\/auspowers.com\/cdn\/shop\/files\/81xopqWXE6L.jpg?v=1784617404"},"aspect_ratio":1.0,"height":2560,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/81xopqWXE6L.jpg?v=1784617404","width":2560}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eRed Lion 30-50 PSI M4 Low Pressure Pump Protection Cut-Off Switch for Well Pumps and Jet Pumps, Black, 640134\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eThe Red Lion 640134 Low Pressure Cut-off Switch is designed to protect your\npump from running dry. If the water level in the well runs too low, the\npressure will drop, this switch detects a drop in the water pressure and turns\nthe pump off when the pressure falls approximately 10 PSI. Running a pump dry\ncan severely damage a pump, melting the impeller, which prevents the impeller\nfrom turning. This can cause the motor to burn out. Protect your\ninvestiment!Allow your well time to recover. To reset the pump, prime the pump\nand hold the lever down manually until the pump kicks in. This switch is\nequipped with 1\/4-inch female NPT threading at the bottom of the unit and\nattaches easily to the pump or the piping.This switch can be used to control\nshallow well jet pumps, convertible jet pumps, deep well pumps, and\ncentrifugal pumps.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003ePROTECTS YOUR PUMP: running a pump without water can severely damage a pump; this switch automatically shuts pump off when pressure decreases 10 PSI which prevents the pump from running dry\u003c\/li\u003e\n \u003cli\u003eM4 TYPE: has manual reset lever and 1\/4-inch Female NPT threading at the bottom of the unit; once well has recovered, hold down lever to manually re-start pump\u003c\/li\u003e\n \u003cli\u003ePRESET FOR 30-50 PSI OPERATION: cut in pressure = 30 PSI; cut-off pressure = 50 PSI, adjustable\u003c\/li\u003e\n \u003cli\u003eLIMITATIONS: designed for 115 Volt pumps up to 1.5 HP and maximum 20 Amps, or 230 Volt pumps up to 3 HP and 17 Amps\u003c\/li\u003e\n \u003cli\u003eADJUSTABLE CUT-IN\/OUT PRESSURE: see product label under cover for adjustment instructions\u003c\/li\u003e\n \u003c\/ul\u003e"}