{"id":12525,"date":"2021-09-13T16:18:00","date_gmt":"2021-09-13T14:18:00","guid":{"rendered":"http:\/\/rdcomponents.com\/site\/?p=12525"},"modified":"2026-06-03T10:52:27","modified_gmt":"2026-06-03T08:52:27","slug":"2-che-cosa-provoca-lapertura-e-la-chiusura-dei-contatti","status":"publish","type":"post","link":"https:\/\/rdcomponents.com\/site\/2021\/09\/13\/2-che-cosa-provoca-lapertura-e-la-chiusura-dei-contatti\/","title":{"rendered":"#2 – Che cosa provoca l’apertura e la chiusura dei contatti in un dispositivo bimetallico"},"content":{"rendered":"\n
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Oggi voglio parlarvi del meccanismo che provoca l’apertura o la chiusura dei contatti di un termostato o di un protettore termico. Si tratta di un principio applicato al controllo della temperatura per la prima volta nel 1830, ma questo lo rivedremo pi\u00f9 avanti. Per ora voglio concentrarmi sul principio che aziona questi componenti. Basandosi sul diverso coefficiente di dilatazione dei metalli, si crea una lamina composta da due strati di due diversi metalli (Es. A e B), quindi bimetallica, i quali, a seguito del riscaldamento della temperatura e per effetto dei rispettivi coefficienti, andranno a dilatarsi o a contrarsi in modo diverso provocando la curvatura della lamina e, nel nostro caso, la conseguente apertura o chiusura dei contatti.<\/p>\n\n\n\n

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\u00c9 possibile conoscere con esattezza la temperatura alla quale, a seconda dei metalli, abbiamo la dilatazione o la contrazione. Conseguentemente \u00e8 possibile tarare il bimetallo affinch\u00e9 si pieghi alla temperatura richiesta, determinando in questo modo la soglia d’intervento. Nel momento in cui la temperatura inizia a diminuire, anche il bimetallo modifica la sua curvatura, fino al ritorno alla posizione iniziale, che nel nostro caso significa chiusura del contatto e ripristino del funzionamento del dispositivo. Bisogna per\u00f2 considerare che la temperatura viene rilevata nel punto in cui si trova la lamina bimetallica, e che di conseguenza il posizionamento del componente influisce sui tempi di reazione, cos\u00ec come la costruzione e l’esecuzione del dispositivo. Questo \u00e8 il principio alla base di molti dei nostri prodotti, come i protettori termici<\/strong><\/a>, i TPS<\/strong><\/a>, i Termostati bimetallici<\/strong><\/a>, i termostati in aria<\/strong><\/a> e infine i termostati regolabili<\/strong><\/a>.<\/p>\n\n\n\n

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Scarica l\u2019articolo in versione stampabile cliccando qui sotto!<\/p>\n\n\n\n

2-Apertura-chiusura-contatti<\/a>Download<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

Oggi voglio parlarvi del meccanismo che provoca l’apertura o la chiusura dei contatti di un termostato o di un protettore termico. Si tratta di un principio applicato al controllo della temperatura per la prima volta nel 1830, ma questo lo rivedremo pi\u00f9 avanti. Per ora…<\/p>\n","protected":false},"author":2,"featured_media":13520,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[239,236],"tags":[125,127,126],"class_list":["post-12525","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-funzionamento-tecnico","category-prodotti","tag-apertura-contatti","tag-bimetallo","tag-chiusura-contatti"],"yoast_head":"\n#2 - Che cosa provoca l'apertura e la chiusura dei contatti in un dispositivo bimetallico - R&d Components Srl %<\/title>\n<meta name=\"description\" content=\"Il meccanismo che provoca l'apertura e la chiusura dei contatti \u00e8 alla base della funzionalit\u00e0 di protettori termici e termostati\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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Ferranti","author_link":"https:\/\/rdcomponents.com\/site\/author\/roberto\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/rdcomponents.com\/site\/category\/funzionamento-tecnico\/\" rel=\"category tag\">Funzionamento tecnico<\/a> <a href=\"https:\/\/rdcomponents.com\/site\/category\/prodotti\/\" rel=\"category tag\">Prodotti<\/a>","rttpg_excerpt":"Oggi voglio parlarvi del meccanismo che provoca l’apertura o la chiusura dei contatti di un termostato o di un protettore termico. Si tratta di un principio applicato al controllo della temperatura per la prima volta nel 1830, ma questo lo rivedremo pi\u00f9 avanti. Per ora...","_links":{"self":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts\/12525","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/comments?post=12525"}],"version-history":[{"count":1,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts\/12525\/revisions"}],"predecessor-version":[{"id":19003,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/posts\/12525\/revisions\/19003"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/media\/13520"}],"wp:attachment":[{"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/media?parent=12525"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/categories?post=12525"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rdcomponents.com\/site\/wp-json\/wp\/v2\/tags?post=12525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}