{"product_id":"thomas-products-4400l-side-mounted-liquid-level-switch","title":"Thomas Products 4400L Side-Mounted Liquid Level Switch","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"654\"\u003eThe Thomas Products 4400L Level \u003ca href=\"https:\/\/plgautomation.com\/collections\/switches-circuit-protection\"\u003eSwitch\u003c\/a\u003e is used for monitoring liquid levels in tanks and automatically actuating electrical control circuits when a predetermined level is reached. Commonly installed in water treatment systems, chemical processing equipment, coolant reservoirs, beverage machinery, and industrial storage tanks, this side-mounted liquid level switch features a rugged plastic construction with a reed switch for dependable point-level detection. Maintenance teams and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this part for repair, retrofit, expansion, and replacement of liquid level sensing systems. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"656\" data-end=\"673\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"675\" data-end=\"1217\"\u003eThe Thomas Products 4400L is designed for point-level sensing in water, oils, coolants, and other compatible liquids. It is widely used in OEM machinery, industrial process tanks, HVAC equipment, food and beverage systems, water treatment plants, and chemical processing applications where reliable liquid level monitoring is required. The cable-version design (Model 4400L) is UL recognized and is well suited for installations requiring remote wiring while maintaining dependable switching performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1219\" data-end=\"1248\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1250\" data-end=\"2343\"\u003e• Brand: Thomas Products Ltd.\u003cbr data-start=\"1279\" data-end=\"1282\"\u003e• Model: 4400L Series\u003cbr data-start=\"1303\" data-end=\"1306\"\u003e• Product Type: Side-Mounted Liquid Level Switch\u003cbr data-start=\"1354\" data-end=\"1357\"\u003e• Mounting Style: Side Mount\u003cbr data-start=\"1385\" data-end=\"1388\"\u003e• Housing Materials: Polypropylene or Polysulfone (model dependent)\u003cbr data-start=\"1455\" data-end=\"1458\"\u003e• Stem Material: Polypropylene or Polysulfone\u003cbr data-start=\"1503\" data-end=\"1506\"\u003e• Float Material: Polypropylene or Polysulfone\u003cbr data-start=\"1552\" data-end=\"1555\"\u003e• Switch Type: SPST Reed Switch, 20 VA Pilot Duty (100 VA optional)\u003cbr data-start=\"1622\" data-end=\"1625\"\u003e• Lead Wires: 22 AWG PVC, 24 in. standard (custom lengths available)\u003cbr data-start=\"1693\" data-end=\"1696\"\u003e• Cable Version: UL Recognized Model 4400L\u003cbr data-start=\"1738\" data-end=\"1741\"\u003e• Operating Temperature: -40°F to +176°F (Cable Version), standard non-cable models up to +225°F\u003cbr data-start=\"1837\" data-end=\"1840\"\u003e• Operating Pressure: Up to 100 PSIG (Polypropylene) or 150 PSIG (Polysulfone), depending on model\u003cbr data-start=\"1938\" data-end=\"1941\"\u003e• Float Specific Gravity: 0.7\u003cbr data-start=\"1970\" data-end=\"1973\"\u003e• Mounting Options: 1\/2 in. MNPT External, 1\/2-13 Bulkhead with Nut, 5\/8-11 Bulkhead with Nut, and Conduit Connector versions\u003cbr data-start=\"2098\" data-end=\"2101\"\u003e• Electrical Configuration: Normally Open or Normally Closed (by float orientation)\u003cbr data-start=\"2184\" data-end=\"2187\"\u003e• Typical Media: Water, Oils, Coolants, and Compatible Liquids\u003cbr data-start=\"2249\" data-end=\"2252\"\u003e• Certifications: UL Recognized (4400L Cable Version) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2345\" data-end=\"2369\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2371\" data-end=\"2680\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Thomas Products 24237\u003cbr data-start=\"2458\" data-end=\"2461\"\u003e• Thomas Products 24250\u003cbr data-start=\"2550\" data-end=\"2553\"\u003e• Thomas Products 42682\u003c\/p\u003e","brand":"Thomas","offers":[{"title":"New","offer_id":51714010841390,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_6ca1fcf4-8653-45bb-8cba-fa1c35b8f4fb.jpg?v=1770413685","url":"https:\/\/plgautomation.com\/products\/thomas-products-4400l-side-mounted-liquid-level-switch","provider":"PLG Automation ","version":"1.0","type":"link"}