{"id":49739,"date":"2026-03-09T12:03:41","date_gmt":"2026-03-09T12:03:41","guid":{"rendered":"https:\/\/www.kdmsteel.com\/?p=49739"},"modified":"2026-03-09T12:33:37","modified_gmt":"2026-03-09T12:33:37","slug":"how-does-a-circuit-breaker-work","status":"publish","type":"post","link":"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/","title":{"rendered":"Comment fonctionne un disjoncteur ?"},"content":{"rendered":"<p>Les disjoncteurs sont indispensables pour pr\u00e9venir les surcharges, les courts-circuits et les d\u00e9fauts \u00e0 la terre, entre autres. Cet article explique le principe de fonctionnement d&#039;un disjoncteur et vous aide \u00e0 comprendre pourquoi ils sont essentiels pour garantir un fonctionnement fiable et la s\u00e9curit\u00e9 \u00e9lectrique dans vos environnements commerciaux ou industriels.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Basculer la table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Basculer<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Circuit_Breaker\" >Disjoncteur<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#The_Working_Principle_of_Circuit_Breaker\" >Principe de fonctionnement d&#039;un disjoncteur<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Normal_Operation\" >Fonctionnement normal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Fault_Detection\" >D\u00e9tection des pannes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Trip_Mechanism_Activation\" >Activation du m\u00e9canisme de d\u00e9clenchement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Arc_Formation\" >Formation d&#039;arc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Arc_Extinction\" >Extinction de l&#039;arc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Circuit_Isolation\" >Isolation du circuit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Resetting_the_Circuit_Breaker\" >R\u00e9armement du disjoncteur<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#FAQ\" >FAQ<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Can_A_Circuit_Breaker_Fail_to_Trip\" >Un disjoncteur peut-il ne pas se d\u00e9clencher\u00a0?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#What_Is_the_Difference_Between_A_Circuit_Breaker_And_A_Fuse\" >Quelle est la diff\u00e9rence entre un disjoncteur et un fusible\u00a0?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#How_Do_You_Choose_The_Right_Circuit_Breaker_for_An_Electrical_System\" >Comment choisir le disjoncteur adapt\u00e9 \u00e0 un syst\u00e8me \u00e9lectrique ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#How_Long_Do_Circuit_Breakers_Typically_Last\" >Quelle est la dur\u00e9e de vie moyenne d&#039;un disjoncteur\u00a0?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#What_Are_the_Main_Types_of_Circuit_Breakers_Used_in_Industrial_Systems\" >Quels sont les principaux types de disjoncteurs utilis\u00e9s dans les syst\u00e8mes industriels\u00a0?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#How_Quickly_Does_A_Circuit_Breaker_Respond_to_A_Short_Circuit\" >\u00c0 quelle vitesse un disjoncteur r\u00e9agit-il \u00e0 un court-circuit\u00a0?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/#Final_Thought\" >Derni\u00e8re r\u00e9flexion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Circuit_Breaker\"><\/span>Disjoncteur<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49750\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Circuit-Breaker.jpg\" alt=\"Disjoncteur\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Circuit-Breaker.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Circuit-Breaker-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Circuit-Breaker-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Circuit-Breaker-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>La fonction principale d&#039;un <a href=\"https:\/\/www.kdmsteel.com\/fr\/disjoncteur-industriel\/\">disjoncteur<\/a> Leur r\u00f4le est de prot\u00e9ger vos installations et \u00e9quipements \u00e9lectriques contre les dommages caus\u00e9s par les surintensit\u00e9s, et de pr\u00e9venir les incendies, les \u00e9lectrocutions et autres dangers. Contrairement aux fusibles, les disjoncteurs sont r\u00e9armables et r\u00e9utilisables.<\/p>\n<p>De mani\u00e8re g\u00e9n\u00e9rale, dans un syst\u00e8me \u00e9lectrique, les disjoncteurs peuvent prot\u00e9ger les \u00e9quipements, r\u00e9duire les risques d&#039;incendie, am\u00e9liorer la s\u00e9curit\u00e9 et la fiabilit\u00e9 du syst\u00e8me et permettre une remise en service rapide du circuit.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Working_Principle_of_Circuit_Breaker\"><\/span>Principe de fonctionnement d&#039;un disjoncteur<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49751\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/The-Working-Principle-of-Circuit-Breaker.jpg\" alt=\"Principe de fonctionnement d&#039;un disjoncteur\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/The-Working-Principle-of-Circuit-Breaker.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/The-Working-Principle-of-Circuit-Breaker-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/The-Working-Principle-of-Circuit-Breaker-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/The-Working-Principle-of-Circuit-Breaker-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Normal_Operation\"><\/span>Fonctionnement normal<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>En conditions normales de fonctionnement, le disjoncteur reste en position MARCHE et le courant circule dans le circuit. Les contacts internes du disjoncteur restent ferm\u00e9s\u00a0; autrement dit, le circuit n\u2019est pas interrompu.<\/p>\n<p>Le courant circule sans probl\u00e8me de l&#039;alimentation \u00e9lectrique \u00e0 travers le circuit jusqu&#039;\u00e0 la charge. Dans ce fonctionnement normal, le disjoncteur se comporte comme un conducteur ordinaire et n&#039;oppose aucune r\u00e9sistance au courant.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Fault_Detection\"><\/span>D\u00e9tection des pannes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La fonction principale d&#039;un disjoncteur est de d\u00e9tecter les d\u00e9fauts. Il sert \u00e0 d\u00e9tecter les conditions suivantes\u00a0:<\/p>\n<p><strong>Surcharge<\/strong>: lorsque le courant d\u00e9passe la capacit\u00e9 nominale du circuit, cela peut \u00eatre d\u00fb \u00e0 l&#039;utilisation simultan\u00e9e d&#039;un trop grand nombre d&#039;appareils.<\/p>\n<p><strong>Court-circuit<\/strong>Une surtension se produit lorsqu&#039;un fil \u00e9lectrique charg\u00e9 entre en contact avec un fil neutre ou un fil de terre.<\/p>\n<p><strong>faille de sol<\/strong>: Lorsque le courant emprunte un chemin inattendu, par exemple lorsqu&#039;un fil charg\u00e9 entre en contact avec le sol.<\/p>\n<p>La d\u00e9tection des d\u00e9fauts s&#039;effectue gr\u00e2ce au m\u00e9canisme de d\u00e9clenchement situ\u00e9 \u00e0 l&#039;int\u00e9rieur de votre disjoncteur. Selon le mod\u00e8le de votre disjoncteur, il existe diff\u00e9rents types de d\u00e9clencheurs\u00a0:<\/p>\n<p><strong>m\u00e9canisme de d\u00e9clenchement thermique<\/strong>Ce type de disjoncteur utilise des lames bim\u00e9talliques, con\u00e7ues pour couper des courants moyennement \u00e9lev\u00e9s pendant une dur\u00e9e prolong\u00e9e. Sous l&#039;effet de la chaleur, la lame bim\u00e9tallique se d\u00e9forme. Le m\u00e9canisme de d\u00e9clenchement s&#039;active lorsque la lame atteint une d\u00e9formation pr\u00e9d\u00e9finie.<\/p>\n<p><strong>m\u00e9canisme de d\u00e9clenchement magn\u00e9tique<\/strong>Il se compose principalement d&#039;un sol\u00e9no\u00efde (\u00e9lectroaimant). En cas de surintensit\u00e9, le courant excessif augmente la force magn\u00e9tique de l&#039;\u00e9lectroaimant. Si le courant d\u00e9passe un certain seuil, l&#039;aimant actionne le levier ou le plongeur, ce qui finit par d\u00e9clencher le disjoncteur.<\/p>\n<p><strong>m\u00e9canisme de d\u00e9clenchement \u00e9lectronique<\/strong>Ce syst\u00e8me utilise principalement des capteurs et des microprocesseurs pour mesurer avec pr\u00e9cision le niveau de courant et le comparer \u00e0 un seuil pr\u00e9d\u00e9fini. Il est personnalisable pour r\u00e9pondre \u00e0 des besoins de protection avanc\u00e9s et permet d&#039;impl\u00e9menter des fonctions telles que la temporisation ou la s\u00e9lectivit\u00e9.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Trip_Mechanism_Activation\"><\/span>Activation du m\u00e9canisme de d\u00e9clenchement<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49756\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Trip-Mechanism-Activation.jpg\" alt=\"Activation du m\u00e9canisme de d\u00e9clenchement\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Trip-Mechanism-Activation.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Trip-Mechanism-Activation-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Trip-Mechanism-Activation-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Trip-Mechanism-Activation-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>Le m\u00e9canisme de d\u00e9clenchement s&#039;active automatiquement d\u00e8s que le disjoncteur d\u00e9tecte un d\u00e9faut, tel qu&#039;une surcharge, un court-circuit ou un d\u00e9faut \u00e0 la terre. En cas de d\u00e9faut, le m\u00e9canisme de fonctionnement se d\u00e9clenche et le circuit est rapidement coup\u00e9 par s\u00e9paration des contacts.<\/p>\n<p>En cas de surcharge de votre circuit, un dispositif de d\u00e9clenchement thermique ou \u00e9lectronique retardera le d\u00e9clenchement et permettra une surcharge temporaire. Ceci \u00e9vite les br\u00e8ves surtensions caus\u00e9es par le d\u00e9marrage d&#039;\u00e9quipements ou de moteurs importants, ainsi que les temps d&#039;arr\u00eat inutiles. Une surcharge prolong\u00e9e peut entra\u00eener le d\u00e9clenchement du disjoncteur.<\/p>\n<p>En cas de court-circuit, le d\u00e9clencheur magn\u00e9tique r\u00e9agit imm\u00e9diatement. G\u00e9n\u00e9ralement, un disjoncteur \u00e9lectromagn\u00e9tique est \u00e9galement \u00e9quip\u00e9 d&#039;un ressort interne. Lorsque la force magn\u00e9tique actionne le levier, la tension du ressort est rapidement rel\u00e2ch\u00e9e. Les contacts s\u00e9par\u00e9s, actionn\u00e9s par ressort, s&#039;ouvrent instantan\u00e9ment, ce qui permet d&#039;\u00e9viter des dommages importants.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Arc_Formation\"><\/span>Formation d&#039;arc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Lorsque les contacts d&#039;un disjoncteur commencent \u00e0 s&#039;\u00e9carter, un arc \u00e9lectrique se forme entre le contact mobile et le contact fixe. Pourquoi ? Parce que le courant cherche un chemin pour continuer \u00e0 circuler. M\u00eame si les contacts s&#039;\u00e9cartent, le courant peut toujours traverser l&#039;espace et former un arc.<\/p>\n<p>Il est important de noter que la temp\u00e9rature de l&#039;arc \u00e9lectrique peut atteindre plusieurs milliers de degr\u00e9s Celsius. Un manque de ma\u00eetrise peut endommager le disjoncteur, provoquer un incendie ou endommager les composants environnants.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Arc_Extinction\"><\/span>Extinction de l&#039;arc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Pour une bonne ma\u00eetrise des arcs \u00e9lectriques, vous pouvez opter pour un disjoncteur \u00e9quip\u00e9 d&#039;un syst\u00e8me d&#039;extinction d&#039;arc. Ce syst\u00e8me permet de contr\u00f4ler et d&#039;\u00e9teindre l&#039;arc en toute s\u00e9curit\u00e9. La m\u00e9thode de contr\u00f4le et d&#039;extinction d\u00e9pend principalement du type de disjoncteur utilis\u00e9.<\/p>\n<p>Les disjoncteurs \u00e0 air \u00e9teignent l&#039;arc \u00e9lectrique principalement en soufflant de l&#039;air lorsque les contacts s&#039;ouvrent. La pression de l&#039;air refroidit l&#039;arc, abaisse sa temp\u00e9rature et coupe le courant.<\/p>\n<p>Si vous utilisez un disjoncteur \u00e0 vide dans des applications haute tension, l&#039;arc s&#039;\u00e9teindra principalement dans un environnement sous vide. En l&#039;absence de gaz ou d&#039;air, l&#039;arc ne peut conduire l&#039;\u00e9lectricit\u00e9.<\/p>\n<p>De plus, les disjoncteurs \u00e0 hexafluorure de soufre (disjoncteurs SF\u2086) utilisent du gaz hexafluorure de soufre pour \u00e9teindre l&#039;arc \u00e9lectrique. Cette application est courante dans les installations \u00e0 haute tension, notamment dans les sous-stations \u00e9lectriques. Ces disjoncteurs permettent de couper le courant en toute s\u00e9curit\u00e9 sans endommager les composants internes.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Circuit_Isolation\"><\/span>Isolation du circuit<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Une fois l&#039;arc \u00e9lectrique \u00e9teint, les contacts du disjoncteur s&#039;ouvrent compl\u00e8tement, isolant ainsi efficacement le circuit. Le reste du syst\u00e8me continue de fonctionner, garantissant que seules les parties d\u00e9fectueuses du circuit sont affect\u00e9es. Ceci \u00e9vite les pannes de courant g\u00e9n\u00e9ralis\u00e9es susceptibles d&#039;entra\u00eener des temps d&#039;arr\u00eat importants dans votre environnement industriel ou commercial.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Resetting_the_Circuit_Breaker\"><\/span>R\u00e9armement du disjoncteur<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Apr\u00e8s le d\u00e9pannage, vous pouvez r\u00e9armer le disjoncteur. Avant cela, vous devez r\u00e9enclencher le m\u00e9canisme de d\u00e9clenchement et remettre les contacts en position ferm\u00e9e. Un disjoncteur correctement r\u00e9arm\u00e9 fonctionne normalement et prot\u00e8ge le syst\u00e8me contre les cons\u00e9quences de pannes ult\u00e9rieures.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49752\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/FAQ-3.jpg\" alt=\"FAQ\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/FAQ-3.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/FAQ-3-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/FAQ-3-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/FAQ-3-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_A_Circuit_Breaker_Fail_to_Trip\"><\/span>Un disjoncteur peut-il ne pas se d\u00e9clencher\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Oui. Un d\u00e9clenchement intempestif du disjoncteur peut \u00eatre d\u00fb \u00e0 l&#039;usure m\u00e9canique, \u00e0 un dimensionnement incorrect, \u00e0 une d\u00e9faillance du d\u00e9clencheur, etc. Il est donc n\u00e9cessaire d&#039;inspecter et de tester r\u00e9guli\u00e8rement le disjoncteur afin de garantir le bon fonctionnement de sa protection.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_Is_the_Difference_Between_A_Circuit_Breaker_And_A_Fuse\"><\/span>Quelle est la diff\u00e9rence entre un disjoncteur et un fusible\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ces deux dispositifs servent \u00e0 prot\u00e9ger le circuit contre les surintensit\u00e9s\u00a0; la diff\u00e9rence r\u00e9side dans leur fonctionnement. Les disjoncteurs peuvent \u00eatre r\u00e9arm\u00e9s apr\u00e8s d\u00e9clenchement, tandis que les fusibles doivent \u00eatre remplac\u00e9s. Les disjoncteurs offrent une protection et une capacit\u00e9 de coupure plus pr\u00e9cises. Les fusibles pr\u00e9sentent un faible co\u00fbt initial, mais des co\u00fbts de maintenance \u00e9lev\u00e9s \u00e0 long terme.<\/p>\n<p>Dans les syst\u00e8mes commerciaux et industriels, les disjoncteurs fiables et r\u00e9utilisables sont la meilleure solution.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_Do_You_Choose_The_Right_Circuit_Breaker_for_An_Electrical_System\"><\/span>Comment choisir le disjoncteur adapt\u00e9 \u00e0 un syst\u00e8me \u00e9lectrique ?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le choix du disjoncteur appropri\u00e9 n\u00e9cessite l&#039;\u00e9valuation du courant nominal, de la tension nominale, du pouvoir de coupure, des caract\u00e9ristiques d&#039;interface, de l&#039;environnement d&#039;installation et de nombreux autres param\u00e8tres. Dans les applications industrielles, il est \u00e9galement indispensable de s&#039;assurer de la compatibilit\u00e9 du disjoncteur avec les autres \u00e9quipements de protection.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_Long_Do_Circuit_Breakers_Typically_Last\"><\/span>Quelle est la dur\u00e9e de vie moyenne d&#039;un disjoncteur\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Les disjoncteurs ont g\u00e9n\u00e9ralement une dur\u00e9e de vie de 20 \u00e0 40 ans, mais celle-ci d\u00e9pend principalement de facteurs tels que leur type, les conditions environnementales et la maintenance. Par exemple, les disjoncteurs miniatures (MCB) et les disjoncteurs \u00e0 haute tension (MCCB) peuvent \u00eatre utilis\u00e9s pendant 20 \u00e0 30 ans avec une maintenance appropri\u00e9e. Les disjoncteurs haute tension, tels que les disjoncteurs \u00e0 vide (VCB) et les disjoncteurs SF\u2086, peuvent durer de 30 \u00e0 40 ans.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_Are_the_Main_Types_of_Circuit_Breakers_Used_in_Industrial_Systems\"><\/span>Quels sont les principaux types de disjoncteurs utilis\u00e9s dans les syst\u00e8mes industriels\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le disjoncteur MCCB est principalement utilis\u00e9 pour la protection contre les courants de moyenne intensit\u00e9 dans les \u00e9quipements industriels, les machines et <a href=\"https:\/\/www.kdmsteel.com\/fr\/panneau-de-distribution\/\">panneaux de distribution<\/a>, Ce disjoncteur \u00e0 courant alternatif (ACB) offre des r\u00e9glages ajustables de protection contre les surcharges et les courts-circuits. Il est utilis\u00e9 dans les syst\u00e8mes moyenne tension, notamment dans les usines et les r\u00e9seaux de distribution, et se caract\u00e9rise par un pouvoir de coupure \u00e9lev\u00e9.<\/p>\n<p>Par ailleurs, on trouve des disjoncteurs \u00e0 vide (VCB) dans les sous-stations industrielles et les r\u00e9seaux \u00e9lectriques, ainsi que des disjoncteurs SF\u2086 pour les syst\u00e8mes de transport \u00e0 haute tension. Le choix d\u00e9pendra de la tension, de l&#039;intensit\u00e9 nominale et des exigences de protection sp\u00e9cifiques du syst\u00e8me industriel.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_Quickly_Does_A_Circuit_Breaker_Respond_to_A_Short_Circuit\"><\/span>\u00c0 quelle vitesse un disjoncteur r\u00e9agit-il \u00e0 un court-circuit\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Son temps de r\u00e9ponse d\u00e9pend souvent du type de disjoncteur, de la gravit\u00e9 du d\u00e9faut et du m\u00e9canisme de d\u00e9tection. En r\u00e8gle g\u00e9n\u00e9rale, les disjoncteurs \u00e0 d\u00e9clenchement \u00e9lectromagn\u00e9tique (MCCB) ont un temps de r\u00e9action aux courts-circuits de 1 \u00e0 3 millisecondes.<\/p>\n<p>Un disjoncteur (ACB) pour un d\u00e9clencheur thermomagn\u00e9tique combine protection thermique (contre les surcharges) et protection magn\u00e9tique (contre les courts-circuits). Il r\u00e9agit lentement aux surcharges mais tr\u00e8s rapidement aux courts-circuits (en 1 \u00e0 5 millisecondes).<\/p>\n<p>Les disjoncteurs (VCB) \u00e9quip\u00e9s de d\u00e9clencheurs \u00e9lectroniques sont dot\u00e9s de microprocesseurs qui r\u00e9agissent aux courts-circuits en moins d&#039;une milliseconde.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Final_Thought\"><\/span>Derni\u00e8re r\u00e9flexion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49753\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Final-Thought.jpg\" alt=\"Derni\u00e8re r\u00e9flexion\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Final-Thought.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Final-Thought-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Final-Thought-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Final-Thought-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>En tant que fabricant professionnel d&#039;armoires \u00e9lectriques, <a href=\"https:\/\/www.kdmsteel.com\/fr\/\">KDM<\/a> Nous proposons diff\u00e9rents types d&#039;armoires de disjoncteurs adapt\u00e9s \u00e0 vos applications. Selon vos besoins sp\u00e9cifiques, nous assurons \u00e9galement une production sur mesure cl\u00e9 en main. Nous r\u00e9pondrons rapidement \u00e0 vos demandes et vous fournirons des \u00e9chantillons. Contactez-nous pour obtenir votre solution personnalis\u00e9e.<\/p>","protected":false},"excerpt":{"rendered":"<p>Circuit breakers are indispensable in preventing overload, short circuit, and ground faults, among others. This article discusses the working principle of the circuit breaker and helps you understand why they are vital for keeping reliable operation and electrical safety in your commercial or industrial environments. Circuit Breaker The main function of a circuit breaker is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":49755,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"disabled","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-49739","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Does a Circuit Breaker Work? - KDM Steel<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Does a Circuit Breaker Work? - KDM Steel\" \/>\n<meta property=\"og:description\" content=\"Circuit breakers are indispensable in preventing overload, short circuit, and ground faults, among others. This article discusses the working principle of the circuit breaker and helps you understand why they are vital for keeping reliable operation and electrical safety in your commercial or industrial environments. Circuit Breaker The main function of a circuit breaker is [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/\" \/>\n<meta property=\"og:site_name\" content=\"KDM Steel\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-09T12:03:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-09T12:33:37+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/How-Does-a-Circuit-Breaker-Work.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"KDM Steel\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"KDM Steel\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/\"},\"author\":{\"name\":\"KDM Steel\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#\\\/schema\\\/person\\\/20f9dd106f5824b75813f83f5a192a5f\"},\"headline\":\"How Does a Circuit Breaker Work?\",\"datePublished\":\"2026-03-09T12:03:41+00:00\",\"dateModified\":\"2026-03-09T12:33:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/\"},\"wordCount\":1416,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.kdmsteel.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Does-a-Circuit-Breaker-Work.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/\",\"url\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/\",\"name\":\"How Does a Circuit Breaker Work? - KDM Steel\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.kdmsteel.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Does-a-Circuit-Breaker-Work.jpg\",\"datePublished\":\"2026-03-09T12:03:41+00:00\",\"dateModified\":\"2026-03-09T12:33:37+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.kdmsteel.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Does-a-Circuit-Breaker-Work.jpg\",\"contentUrl\":\"https:\\\/\\\/www.kdmsteel.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Does-a-Circuit-Breaker-Work.jpg\",\"width\":1280,\"height\":720,\"caption\":\"How Does a Circuit Breaker Work\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/how-does-a-circuit-breaker-work\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.kdmsteel.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How Does a Circuit Breaker Work?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#website\",\"url\":\"https:\\\/\\\/www.kdmsteel.com\\\/\",\"name\":\"KDM Steel\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.kdmsteel.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#organization\",\"name\":\"KDM Steel\",\"url\":\"https:\\\/\\\/www.kdmsteel.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.kdmsteel.com\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/cropped-kdmsteel-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.kdmsteel.com\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/cropped-kdmsteel-logo.png\",\"width\":998,\"height\":535,\"caption\":\"KDM Steel\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.kdmsteel.com\\\/#\\\/schema\\\/person\\\/20f9dd106f5824b75813f83f5a192a5f\",\"name\":\"KDM Steel\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/64b16d13078b1bec337dbb31f593dfd16bc530c88ca9fe9b1c9d2a002408080e?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/64b16d13078b1bec337dbb31f593dfd16bc530c88ca9fe9b1c9d2a002408080e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/64b16d13078b1bec337dbb31f593dfd16bc530c88ca9fe9b1c9d2a002408080e?s=96&d=mm&r=g\",\"caption\":\"KDM Steel\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Comment fonctionne un disjoncteur\u00a0? - KDM Steel","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/","og_locale":"fr_FR","og_type":"article","og_title":"How Does a Circuit Breaker Work? - KDM Steel","og_description":"Circuit breakers are indispensable in preventing overload, short circuit, and ground faults, among others. This article discusses the working principle of the circuit breaker and helps you understand why they are vital for keeping reliable operation and electrical safety in your commercial or industrial environments. Circuit Breaker The main function of a circuit breaker is [&hellip;]","og_url":"https:\/\/www.kdmsteel.com\/fr\/comment-fonctionne-un-disjoncteur\/","og_site_name":"KDM Steel","article_published_time":"2026-03-09T12:03:41+00:00","article_modified_time":"2026-03-09T12:33:37+00:00","og_image":[{"width":1280,"height":720,"url":"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/How-Does-a-Circuit-Breaker-Work.jpg","type":"image\/jpeg"}],"author":"KDM Steel","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"KDM Steel","Dur\u00e9e de lecture estim\u00e9e":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#article","isPartOf":{"@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/"},"author":{"name":"KDM Steel","@id":"https:\/\/www.kdmsteel.com\/#\/schema\/person\/20f9dd106f5824b75813f83f5a192a5f"},"headline":"How Does a Circuit Breaker Work?","datePublished":"2026-03-09T12:03:41+00:00","dateModified":"2026-03-09T12:33:37+00:00","mainEntityOfPage":{"@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/"},"wordCount":1416,"commentCount":0,"publisher":{"@id":"https:\/\/www.kdmsteel.com\/#organization"},"image":{"@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/How-Does-a-Circuit-Breaker-Work.jpg","articleSection":["Blog"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/","url":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/","name":"Comment fonctionne un disjoncteur\u00a0? - KDM Steel","isPartOf":{"@id":"https:\/\/www.kdmsteel.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#primaryimage"},"image":{"@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/How-Does-a-Circuit-Breaker-Work.jpg","datePublished":"2026-03-09T12:03:41+00:00","dateModified":"2026-03-09T12:33:37+00:00","breadcrumb":{"@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#primaryimage","url":"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/How-Does-a-Circuit-Breaker-Work.jpg","contentUrl":"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/How-Does-a-Circuit-Breaker-Work.jpg","width":1280,"height":720,"caption":"How Does a Circuit Breaker Work"},{"@type":"BreadcrumbList","@id":"https:\/\/www.kdmsteel.com\/how-does-a-circuit-breaker-work\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.kdmsteel.com\/"},{"@type":"ListItem","position":2,"name":"How Does a Circuit Breaker Work?"}]},{"@type":"WebSite","@id":"https:\/\/www.kdmsteel.com\/#website","url":"https:\/\/www.kdmsteel.com\/","name":"Acier KDM","description":"","publisher":{"@id":"https:\/\/www.kdmsteel.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kdmsteel.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.kdmsteel.com\/#organization","name":"Acier KDM","url":"https:\/\/www.kdmsteel.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.kdmsteel.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2024\/05\/cropped-kdmsteel-logo.png","contentUrl":"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2024\/05\/cropped-kdmsteel-logo.png","width":998,"height":535,"caption":"KDM Steel"},"image":{"@id":"https:\/\/www.kdmsteel.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.kdmsteel.com\/#\/schema\/person\/20f9dd106f5824b75813f83f5a192a5f","name":"Acier KDM","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/secure.gravatar.com\/avatar\/64b16d13078b1bec337dbb31f593dfd16bc530c88ca9fe9b1c9d2a002408080e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/64b16d13078b1bec337dbb31f593dfd16bc530c88ca9fe9b1c9d2a002408080e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/64b16d13078b1bec337dbb31f593dfd16bc530c88ca9fe9b1c9d2a002408080e?s=96&d=mm&r=g","caption":"KDM Steel"}}]}},"_links":{"self":[{"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/posts\/49739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/comments?post=49739"}],"version-history":[{"count":4,"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/posts\/49739\/revisions"}],"predecessor-version":[{"id":49757,"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/posts\/49739\/revisions\/49757"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/media\/49755"}],"wp:attachment":[{"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/media?parent=49739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/categories?post=49739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kdmsteel.com\/fr\/wp-json\/wp\/v2\/tags?post=49739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}