{"title":"Thermal Switch","description":"\u003cp\u003eThermal switches protect circuit and system from high temperatures\u003c\/p\u003e","products":[{"product_id":"seki-st-22-automatic-reset-bimetal-thermal-switch","title":"SEKI ST-22 Automatic Reset Bimetal Thermal Switch","description":"\u003cp\u003e\u003cstrong\u003eTemperature tolerance:\u003c\/strong\u003e ±5°C\u003cbr\u003e\u003cstrong\u003eTypical reset differential:\u003c\/strong\u003e approximately 30°\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong\u003e🚚 Fast UK dispatch\u003c\/strong\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e📦 Worldwide delivery available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong\u003eReliable over-temperature protection for motors, transformers, power supplies, LED drivers and electronic equipment.\u003c\/strong\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStocked Range 60°C + 70°C + 80°C + 90°C + 100°C • Normally Closed • Automatic Reset • Snap Action\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eAutomatic Reset Thermal Switch SEKI ST-22\u003c\/h2\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp\u003e🔄 \u003cstrong\u003eAutomatic Reset Thermal Protection\u003c\/strong\u003e — resets after the switch cools\u003cbr\u003e🌡️ \u003cstrong\u003eNormally Closed Operation\u003c\/strong\u003e — opens at the selected temperature\u003cbr\u003e📐 \u003cstrong\u003eCompact \u0026amp; Space-Saving\u003c\/strong\u003e — ideal where installation space is limited\u003cbr\u003e⚡ \u003cstrong\u003eAC \u0026amp; DC Compatible\u003c\/strong\u003e — suitable for a wide range of applications\u003cbr\u003e🔌 \u003cstrong\u003e70 mm Insulated Lead Wires\u003c\/strong\u003e — supplied ready for installation\u003cbr\u003e⚙️ \u003cstrong\u003ePrecision Snap-Action Bimetal Design\u003c\/strong\u003e — fast, reliable thermal switching\u003cbr\u003e🛡️ \u003cstrong\u003eInternational Safety Standards\u003c\/strong\u003e — designed for dependable thermal protection\u003cbr\u003e🚚 \u003cstrong\u003eFast Worldwide Dispatch from the UK\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSEKI ST-22\u003c\/strong\u003e is a compact automatic-reset bimetal thermal switch designed to protect electrical equipment from overheating. Using a precision snap-action bimetal mechanism, the switch opens the circuit when its calibrated temperature is reached and automatically reconnects once the device has cooled.\u003c\/p\u003e\n\u003cp\u003eIts small footprint, reliable switching performance and sealed construction make it an excellent choice for motors, transformers, LED drivers, battery chargers, power supplies and many other industrial or commercial applications.\u003c\/p\u003e\n\u003ch2\u003eThermal Fuse V Thermal switch\u003c\/h2\u003e\n\u003cp\u003eST-22 is a resettable thermal switch\u003c\/p\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003e\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eST-22 Thermal Switch\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eThermal Fuse\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver-temperature protection\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomatic reset\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✗\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReusable\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003e✗\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequires replacement after trip\u003c\/td\u003e\n\u003ctd\u003e✗\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGood for repeated thermal cycling\u003c\/td\u003e\n\u003ctd\u003e✓\u003c\/td\u003e\n\u003ctd\u003eUsually no\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eThe ST-22 is widely used to provide over-temperature protection in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eElectric motors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower transformers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLED drivers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower supplies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBattery chargers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSolenoids\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeating elements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLighting equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOEM electronic products\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eInside the ST-22 is a calibrated bimetal disc that reacts to temperature changes. Under normal operating conditions the contacts are closed, allowing current to flow. When the pre-set temperature is reached, the disc rapidly changes shape, opening the contacts and interrupting the electrical circuit.\u003c\/p\u003e\n\u003cp\u003eAs the device cools below its reset temperature, the contacts automatically close, restoring normal operation without requiring manual intervention.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch Type\u003c\/td\u003e\n\u003ctd\u003eAutomatic Reset Bimetal Thermal Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperatures\u003c\/td\u003e\n\u003ctd\u003e50°C to 150°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Increments\u003c\/td\u003e\n\u003ctd\u003e5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e7A @ 250VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Rating\u003c\/td\u003e\n\u003ctd\u003eUp to 5A @ 24VDC (application dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset Differential\u003c\/td\u003e\n\u003ctd\u003eApproximately 30°C (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eEpoxy-sealed PBT resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP45\/IP65 depending on installation and version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Lead Length\u003c\/td\u003e\n\u003ctd\u003e70 mm XLPE insulated leads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Option\u003c\/td\u003e\n\u003ctd\u003eSurface mounting clip available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eST-22 Thermal Switch Dimensions\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0819\/4496\/9558\/files\/ST-22_Bimetal_thermal_switch.png?v=1783869839\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 × SEKI ST-22 Automatic Reset Thermal Switch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eST-22 Thermal Protection Approvals\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0819\/4496\/9558\/files\/ST-22_thermal_switch_Safety_approvals.png?v=1783870314\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"SEKI","offers":[{"title":"ST-22 60°C","offer_id":54526064132438,"sku":null,"price":1.75,"currency_code":"GBP","in_stock":true},{"title":"ST-22 70°C","offer_id":54526064165206,"sku":null,"price":1.75,"currency_code":"GBP","in_stock":true},{"title":"ST-22 80°C","offer_id":54526064197974,"sku":null,"price":1.75,"currency_code":"GBP","in_stock":true},{"title":"ST-22 90°C","offer_id":54526064230742,"sku":null,"price":1.75,"currency_code":"GBP","in_stock":true},{"title":"ST-22 100°C","offer_id":54526064263510,"sku":null,"price":1.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/4496\/9558\/files\/St-22_Thermal_switch_group.png?v=1785687647"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/4496\/9558\/collections\/Thermal_switch_100C.png?v=1787208829","url":"https:\/\/onlinesensors.store\/collections\/thermal-switch.oembed","provider":"OnlineSensors Store","version":"1.0","type":"link"}