{"id":1568,"date":"2026-05-29T14:14:50","date_gmt":"2026-05-29T06:14:50","guid":{"rendered":"..\/..\/..\/..\/index.html\/?p=1568"},"modified":"2026-05-29T14:14:56","modified_gmt":"2026-05-29T06:14:56","slug":"juc-31f-thermostatic-switch","status":"publish","type":"post","link":"..\/..\/..\/..\/index.html\/juc-31f-thermostatic-switch\/","title":{"rendered":"JUC-31F Thermostatic Switch"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"..\/..\/..\/..\/index.html\/wp-content\/uploads\/2026\/04\/JUC-31F-65H.jpg\" alt=\"\" class=\"wp-image-1256\" srcset=\"..\/..\/..\/..\/index.html\/wp-content\/uploads\/2026\/04\/JUC-31F-65H.jpg 800w, ..\/..\/..\/..\/index.html\/wp-content\/uploads\/2026\/04\/JUC-31F-65H-300x300.jpg 300w, ..\/..\/..\/..\/index.html\/wp-content\/uploads\/2026\/04\/JUC-31F-65H-150x150.jpg 150w, ..\/..\/..\/..\/index.html\/wp-content\/uploads\/2026\/04\/JUC-31F-65H-768x768.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Exif_JPEG_PICTURE<\/figcaption><\/figure>\n\n\n\n<p>I. Brand and Positioning INFEIMI JUC-31Fis a domestic snap-action bimetallic temperature switch (thermostat) with TO 220 plastic encapsulation and straight-through two pins. It features a small size, low cost, and automatic reset, and is used for overheat protection and temperature control in PCBs, power supplies, power amplifiers, and other applications.<br>II. Operating Principle \uf0b7 Core: Bimetallic strip temperature sensing, temperature rise \u2192 metal strip deforms and snaps \u2192 contact action (on\/off); automatic reset after temperature drop.<br>Normally closed (Type D): Normally conductive \u2192 disconnects upon overtemperature \u2192 reconnects upon temperature reduction (most commonly used).<br>Normally open (H type): normally disconnected \u2192 overtemperature closed \u2192 disconnected when temperature drops.<\/p>\n\n\n\n<p>III. Model and Specification (INFEIMI) \uf0b7 Model Examples: JUC-31F D65 (Normally Closed, Acts at 65\u00b0C); KSD 01F H80 (Normally Open, Acts at 80\u00b0C).<br>Operating temperature: 25\u2103\uff5e150\u2103 (commonly used: 40\/45\/50\/65\/70\/85\/95\/100\u2103).<br>Temperature tolerance: \u00b13\u2103 (\u2264100\u2103), \u00b15\u2103 (>100\u2103).<br>Reset temperature difference: approximately 20\u2103 to 30\u2103 (e.g., disconnected at 65\u2103 \u2192 reset at approximately 40\u2103).<br>IV. Electrical Parameters \uf0b7 Contact Load: 220VAC 1.5A\/3A; 24VDC 1.5A\/3A.<br>Insulation resistance: \u2265100M\u03a9 (at room temperature and humidity).<br>Contact resistance: \u2264100m\u03a9.<br>\uf0b7 Withstand voltage: \u22651500VAC\/1min.<br>Lifespan: \u226530,000 cycles (under rated load).<br>Weight: \u22481.8g.<br>Environmental temperature: -20\u2103 to +160\u2103.<br>V. Structure and Installation \uf0b7 Packaging: TO 220 2, plastic encapsulation, two-pin straight insertion, with an insulating shell.<br>Size: Approximately 10\u00d74\u00d720mm, with a pin spacing of 5mm.<br>Installation: Ensure the metal surface is tightly attached to the heating element (apply thermal grease), and insert the pins into the PCB or make the wiring.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I. Brand and Positioning INFEIMI JUC-31Fis a domestic snap-action bimetallic temperature switch (thermostat) with TO 220 plastic encapsulation and straight-through [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1568","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"blocksy_meta":[],"_links":{"self":[{"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/posts\/1568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/comments?post=1568"}],"version-history":[{"count":1,"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/posts\/1568\/revisions"}],"predecessor-version":[{"id":1569,"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/posts\/1568\/revisions\/1569"}],"wp:attachment":[{"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/media?parent=1568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/categories?post=1568"},{"taxonomy":"post_tag","embeddable":true,"href":"..\/..\/..\/..\/index.html\/wp-json\/wp\/v2\/tags?post=1568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}