{"product_id":"campbell-husky-ch4p100-135-4p-pressure-switch","title":"Campbell-Husky CH4P100-135-4P Pressure Switch","description":"\u003cdiv\u003e\u003cp\u003eThe Campbell-Husky CH4P100-135-4P Pressure Switch is a four-port, 26A-rated control device that automatically governs a compressor motor by sensing tank pressure in the 100–135 psi range. It uses four ports with 1\/4\" female NPT connections and is designed for side-wire feed installation, making it a direct replacement option on compatible Campbell Hausfeld and Husky compressors. An integrated unloader valve relieves discharge pressure when the switch cycles, enabling a smoother restart as tank pressure falls below the upper setpoint. In operation, the switch turns the motor off at about 135 psi and restarts when the tank pressure drops to roughly 100 psi, a common arrangement for keeping compressors within a safe, efficient operating window. This CH4P100-135-4P unit is intended for use where a four-port pressure switch with a 100–135 psi cut-in\/cut-out range is required, and it is commonly chosen as a replacement part for Campbell Hausfeld and Husky air compressors that use four-port, auto\/off control mechanisms. \u003c\/p\u003e\u003c\/div\u003e","brand":"CAMPBELL HAUSFELD","offers":[{"title":"New","offer_id":51677646455086,"sku":null,"price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_99522799-dc83-40cd-b2b2-aed0b61d44cb.jpg?v=1769565880","url":"https:\/\/plgautomation.com\/products\/campbell-husky-ch4p100-135-4p-pressure-switch","provider":"PLG Automation ","version":"1.0","type":"link"}