{"id":12701,"date":"2022-04-07T14:00:00","date_gmt":"2022-04-07T12:00:00","guid":{"rendered":"http:\/\/rdcomponents.com\/site\/?p=12701"},"modified":"2025-03-24T15:43:37","modified_gmt":"2025-03-24T14:43:37","slug":"30-protettori-termici-a-riarmo-elettrico","status":"publish","type":"post","link":"https:\/\/rdcomponents.com\/site\/2022\/04\/07\/30-protettori-termici-a-riarmo-elettrico\/","title":{"rendered":"#30 &#8211; Protettori termici a riarmo elettrico"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<p class=\"wp-block-paragraph\" style=\"font-size:16px\">L&#8217;argomento di quest&#8217;oggi riguarda dei componenti particolari, <strong>i protettori termici a riarmo elettrico<\/strong>.<br>\u00adEsistono alcune applicazioni per le quali \u00e8 chiesto che il dispositivo di sicurezza non si ripristini, se non per volont\u00e0 dell\u2019utilizzatore o, spesso, di un tecnico dell\u2019assistenza. Abbiamo gi\u00e0 visto come i termofusibili (\u201c<a href=\"https:\/\/rdcomponents.com\/site\/2021\/11\/04\/10-come-funzionano-i-termofusibili\/\" target=\"_blank\" rel=\"noreferrer noopener\">Articolo 10<\/a>\u201d, e \u201c<a href=\"https:\/\/rdcomponents.com\/site\/2022\/01\/13\/18-termofusibile-cosa-puo-succedere-se-th-e-troppo-vicino-a-tf\/\" target=\"_blank\" rel=\"noreferrer noopener\">Articolo 18<\/a>\u201d) potrebbero rispondere a questa esigenza. Il problema \u00e8 che l\u2019unico modo per far tornare operativa la macchina sulla quale sono montati \u00e8 di intervenire sostituendo il termofusibile, tramite un tecnico qualificato.<br>Esistono per\u00f2 dispositivi a riarmo manuale. Significa che il ripristino del termostato <a href=\"https:\/\/rdcomponents.com\/site\/2021\/09\/13\/2-che-cosa-provoca-lapertura-e-la-chiusura-dei-contatti-in-un-dispositivo-bimetallico\/\" target=\"_blank\" rel=\"noreferrer noopener\">non avviene automaticamente secondo il normale ciclo del bimetallo<\/a> (on\/off) ma tramite un intervento umano. Prevalentemente questa possibilit\u00e0 \u00e8 offerta dai termostati bimetallici, ad esempio i TK32, oppure dai termostati a bulbo, ma di queste due possibilit\u00e0 parleremo pi\u00f9 avanti. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:16px\">Oggi voglio parlare di una terza via, che \u00e8 offerta dei protettori termici. Il funzionamento meccanico \u00e8 totalmente diverso da quello dei due casi appena citati, ma il risultato \u00e8 molto simile. Per i protettori termici \u00e8 basato sul principio del bimetallo, come tutti i protettori, ma viene collegato in serie con un <a href=\"https:\/\/rdcomponents.com\/site\/2022\/01\/27\/20-termistori-ptc\/\" target=\"_blank\" rel=\"noreferrer noopener\">termistore PTC<\/a>. Questo, una volta intervenuto, manterr\u00e0 la lamina di bimetallo aperta, fino a quando non si andr\u00e0 a scollegare l\u2019alimentazione e a ricollegarla. Questa soluzione viene usata quando \u00e8 richiesto un alto livello di sicurezza, per esempio se a seguito di un\u2019anomalia un protettore interviene e si dovr\u00e0 verificare quali siano state le cause che hanno provocato l\u2019apertura dei contatti. Bisogna assicurarsi che il protettore non ripristini mentre l\u2019addetto di turno compie le dovute indagini, ma solamente al termine di queste. Ecco quindi che il protettore interviene e il ripristino avverr\u00e0 solamente per volont\u00e0 e con consapevolezza di chi sta controllando la macchina.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image is-style-default\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"252\" src=\"https:\/\/rdcomponents.com\/site\/wp-content\/uploads\/2022\/04\/17AMD-PTCR.jpg\" alt=\"Protettori termici a riarmo elettrico\" class=\"wp-image-12704\" style=\"width:1150px\" srcset=\"https:\/\/rdcomponents.com\/site\/wp-content\/uploads\/2022\/04\/17AMD-PTCR.jpg 1000w, https:\/\/rdcomponents.com\/site\/wp-content\/uploads\/2022\/04\/17AMD-PTCR-300x76.jpg 300w, https:\/\/rdcomponents.com\/site\/wp-content\/uploads\/2022\/04\/17AMD-PTCR-768x194.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Le soluzioni che proponiamo<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<p class=\"wp-block-paragraph\" style=\"font-size:16px\">R&amp;D Components ha diverse soluzioni da offrire, riguardo i protettori termici a riarmo elettrico. La prima arriva ancora una volta dai nostri partner tedeschi della TMC. Si tratta della serie R, (<a href=\"https:\/\/rdcomponents.com\/site\/riarmo-elettrico\/\">R1,&nbsp;R4&nbsp;ed&nbsp;R8<\/a>) che \u00e8 progettata con gli stessi ingombri della serie C e con gli stessi vantaggi strutturali (\u201c<a href=\"https:\/\/rdcomponents.com\/site\/2021\/09\/09\/1-tmc-hai-problemi-con-il-tuo-tradizionale-fornitore\/\" target=\"_blank\" rel=\"noreferrer noopener\">Articolo 1<\/a>\u201d e \u201c<a href=\"https:\/\/rdcomponents.com\/site\/2022\/03\/24\/28-la-resistenza-a-compressione\/\" target=\"_blank\" rel=\"noreferrer noopener\">Articolo 28<\/a>\u201d). Ha inoltre il vantaggio di avere inserito il PTC all\u2019interno dell\u2019involucro metallico, garantendo la massima protezione in caso di compressione.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:16px\">Una seconda alternativa \u00e8 data dalla soluzione cinese&nbsp;<a href=\"https:\/\/rdcomponents.com\/site\/riarmo-elettrico\/\">17AMD+PTC<\/a>, leggermente pi\u00f9 grosso della serie R ma con la possibilit\u00e0 di raggiungere portate e un ciclo di vita molto pi\u00f9 alti.&nbsp;<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Scarica l\u2019articolo in versione stampabile cliccando qui sotto!<\/p>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-dcbc804b-5b01-423c-a3a8-3cffd13b3236\" href=\"https:\/\/rdcomponents.com\/site\/wp-content\/uploads\/2022\/09\/30-PROTETTORI-TERMICI-A-RIARMO-ELETTRICO.jpg\">30-PROTETTORI-TERMICI-A-RIARMO-ELETTRICO<\/a><a href=\"https:\/\/rdcomponents.com\/site\/wp-content\/uploads\/2022\/09\/30-PROTETTORI-TERMICI-A-RIARMO-ELETTRICO.jpg\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-dcbc804b-5b01-423c-a3a8-3cffd13b3236\">Download<\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;argomento di quest&#8217;oggi riguarda dei componenti particolari, i protettori termici a riarmo elettrico.\u00adEsistono alcune applicazioni per le quali \u00e8 chiesto che il dispositivo di sicurezza non si ripristini, se non per volont\u00e0 dell\u2019utilizzatore o, spesso, di un tecnico dell\u2019assistenza. Abbiamo gi\u00e0 visto come i termofusibili&#8230;<\/p>\n","protected":false},"author":2,"featured_media":13533,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[236],"tags":[133,131,114,132,134,113],"class_list":["post-12701","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-prodotti","tag-17amd","tag-protettori","tag-protezioni-termiche","tag-ptc","tag-riarmo-elettrico","tag-tmc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>#30 - Protettori termici a riarmo elettrico - R&amp;d Components Srl<\/title>\n<meta name=\"description\" content=\"I protettori termici a riarmo elettrico con PTC garantiscono una sicurezza aggiuntiva in caso di malfunzionamenti e successivo intervento\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rdcomponents.com\/site\/2022\/04\/07\/30-protettori-termici-a-riarmo-elettrico\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"#30 - Protettori termici a riarmo elettrico - R&amp;d Components Srl\" \/>\n<meta property=\"og:description\" content=\"I protettori termici a riarmo elettrico con PTC garantiscono una sicurezza aggiuntiva in caso di malfunzionamenti e successivo intervento\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rdcomponents.com\/site\/2022\/04\/07\/30-protettori-termici-a-riarmo-elettrico\/\" \/>\n<meta property=\"og:site_name\" content=\"R&amp;d Components Srl\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-07T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-24T14:43:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/rdcomponents.com\/site\/wp-content\/uploads\/2022\/04\/IMG20221019160324.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"997\" \/>\n\t<meta property=\"og:image:height\" content=\"735\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Roberto Ferranti\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"Roberto Ferranti\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/rdcomponents.com\\\/site\\\/2022\\\/04\\\/07\\\/30-protettori-termici-a-riarmo-elettrico\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rdcomponents.com\\\/site\\\/2022\\\/04\\\/07\\\/30-protettori-termici-a-riarmo-elettrico\\\/\"},\"author\":{\"name\":\"Roberto Ferranti\",\"@id\":\"https:\\\/\\\/rdcomponents.com\\\/site\\\/#\\\/schema\\\/person\\\/7094b2fd65b3d1dc44c7d0580d6a79cd\"},\"headline\":\"#30 &#8211; 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