{"product_id":"capillary-thermostat-knob-mechanical-temperature-switch","title":"Capillary Thermostat Knob Mechanical Temperature Switch","description":"\n\u003ch2\u003eCapillary Thermostat Knob – Mechanical Temperature Switch\u003c\/h2\u003e\n\u003cp\u003eTake precise control of temperature in your appliances, HVAC systems, ovens, refrigeration units, and industrial equipment with this reliable \u003cstrong\u003eCapillary Thermostat Knob Mechanical Temperature Switch\u003c\/strong\u003e. Available in multiple temperature ranges — including 50–300°C, 0–60°C, 0–50°C, 0–40°C, 30–110°C, and -30–30°C — this switch lets you select the exact range suited to your application, delivering consistent, repeatable temperature regulation without the need for electronics or batteries.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Temperature Range Selection:\u003c\/strong\u003e Choose from six available ranges to match your specific system — from sub-zero cold storage (-30–30°C) to high-heat industrial applications (50–300°C).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePurely Mechanical Operation:\u003c\/strong\u003e No electronics, no circuit boards — the capillary sensing tube and bimetal mechanism provide dependable switching action with no power source required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built from a combination of robust plastic and metal components for long-lasting performance in demanding environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple Knob Adjustment:\u003c\/strong\u003e Intuitive dial-style knob makes it easy to set your target temperature setpoint quickly and accurately.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Suitable for use in water heaters, ovens, refrigerators, incubators, heating systems, cooling equipment, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Versatile:\u003c\/strong\u003e Designed to fit standard thermostat mounting configurations for straightforward installation and replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic + Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Capillary Mechanical Thermostat Switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Mechanical (non-electronic)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Ranges:\u003c\/strong\u003e 50–300°C | 0–60°C | 0–50°C | 0–40°C | 30–110°C | -30–30°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Capillary Thermostat Knob Temperature Switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePlease refer to the product listing images for size references. Photos may not reflect actual scale.\u003c\/li\u003e\n  \u003cli\u003eAllow 5–10 mm variance due to manual measurement tolerances.\u003c\/li\u003e\n  \u003cli\u003eActual color may vary slightly from images due to monitor display settings, lighting, and saturation differences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHelpful Resources\u003c\/h3\u003e\n\u003cp\u003eFor guidance on safe installation of temperature control devices in electrical systems, visit the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety resource page\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a capillary thermostat knob and how does it work?\u003c\/h4\u003e\n\u003cp\u003eA: A capillary thermostat is a mechanical temperature-sensing switch that uses a sealed capillary tube filled with a temperature-sensitive fluid. As the fluid expands or contracts with temperature changes, it actuates a switch mechanism to open or close a circuit — enabling automatic temperature regulation without electronics or external power.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which temperature range should I choose for my application?\u003c\/h4\u003e\n\u003cp\u003eA: Select the range that best fits your system. For refrigerators or cold storage, the -30–30°C range is ideal. For water heaters or incubators, 0–60°C or 30–110°C are common choices. For ovens or high-temperature industrial equipment, the 50–300°C option is recommended. Match the range to your system's operating setpoint for optimal accuracy.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this thermostat switch compatible with my appliance?\u003c\/h4\u003e\n\u003cp\u003eA: This capillary thermostat knob is designed to fit standard thermostat mounting configurations found in many common household and industrial appliances including ovens, water heaters, refrigeration units, and heating systems. Check your existing thermostat's mounting dimensions and temperature range before ordering to confirm compatibility.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this switch require batteries or an external power source?\u003c\/h4\u003e\n\u003cp\u003eA: No. This is a fully mechanical device. It operates entirely through the capillary tube's fluid expansion mechanism and requires no batteries, electronics, or external power to function.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a capillary thermostat knob and how does it work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A capillary thermostat is a mechanical temperature-sensing switch that uses a sealed capillary tube filled with a temperature-sensitive fluid. As the fluid expands or contracts with temperature changes, it actuates a switch mechanism to open or close a circuit — enabling automatic temperature regulation without electronics or external power.\"}}, {\"@type\": \"Question\", \"name\": \"Which temperature range should I choose for my application?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Select the range that best fits your system. For refrigerators or cold storage, the -30–30°C range is ideal. For water heaters or incubators, 0–60°C or 30–110°C are common choices. For ovens or high-temperature industrial equipment, the 50–300°C option is recommended. Match the range to your system's operating setpoint for optimal accuracy.\"}}, {\"@type\": \"Question\", \"name\": \"Is this thermostat switch compatible with my appliance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This capillary thermostat knob is designed to fit standard thermostat mounting configurations found in many common household and industrial appliances including ovens, water heaters, refrigeration units, and heating systems. Check your existing thermostat's mounting dimensions and temperature range before ordering to confirm compatibility.\"}}, {\"@type\": \"Question\", \"name\": \"Does this switch require batteries or an external power source?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is a fully mechanical device. It operates entirely through the capillary tube's fluid expansion mechanism and requires no batteries, electronics, or external power to function.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Fasteners \u0026 Electrical\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/collections\/fasteners-electrical\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Capillary Thermostat Knob Mechanical Temperature Switch\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/products\/capillary-thermostat-knob-mechanical-temperature-switch\"}]}\u003c\/script\u003e","brand":"Vue","offers":[{"title":"50-300","offer_id":48729123094720,"sku":"14:175#50-300","price":30.99,"currency_code":"USD","in_stock":true},{"title":"0-80","offer_id":48729123127488,"sku":"14:29#0-80","price":30.99,"currency_code":"USD","in_stock":true},{"title":"0-60","offer_id":48729123160256,"sku":"14:10#0-60","price":30.99,"currency_code":"USD","in_stock":true},{"title":"30-150","offer_id":48729123193024,"sku":"14:173#30-150","price":30.99,"currency_code":"USD","in_stock":true},{"title":"30-110","offer_id":48729123225792,"sku":"14:94#30-110","price":30.99,"currency_code":"USD","in_stock":true},{"title":"30","offer_id":48729123258560,"sku":"14:350850#30","price":30.99,"currency_code":"USD","in_stock":true},{"title":"0-50","offer_id":48729123291328,"sku":"14:350853#0-50","price":30.99,"currency_code":"USD","in_stock":true},{"title":"0-40","offer_id":48729123324096,"sku":"14:350852#0-40","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/9338\/7968\/files\/S7869a72738f343269b3f235cf43aac00E.webp?v=1786066001","url":"https:\/\/vueselect.com\/products\/capillary-thermostat-knob-mechanical-temperature-switch","provider":"Vue","version":"1.0","type":"link"}