{"id":45819,"date":"2025-08-19T01:14:02","date_gmt":"2025-08-19T01:14:02","guid":{"rendered":"https:\/\/www.kdmsteel.com\/?p=45819"},"modified":"2025-08-19T12:07:44","modified_gmt":"2025-08-19T12:07:44","slug":"how-to-replace-a-circuit-breaker","status":"publish","type":"post","link":"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/","title":{"rendered":"Como substituir um disjuntor"},"content":{"rendered":"<p>Um disjuntor \u00e9 um dispositivo de prote\u00e7\u00e3o el\u00e9trica que interrompe com seguran\u00e7a o fluxo de eletricidade em caso de corrente anormal, protegendo seus circuitos e equipamentos contra danos e prevenindo o risco de inc\u00eandio. Quando um disjuntor n\u00e3o est\u00e1 funcionando corretamente, voc\u00ea precisa substitu\u00ed-lo imediatamente para garantir a seguran\u00e7a. Este artigo fornecer\u00e1 instru\u00e7\u00f5es detalhadas sobre como substituir um disjuntor.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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\">\u00cdndice<\/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=\"Alternar \u00edndice\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/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\/pt\/como-substituir-um-disjuntor\/#Step_1_Selecting_the_Right_Circuit_Breaker\" >Passo 1: Selecionando o disjuntor correto<\/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\/pt\/como-substituir-um-disjuntor\/#Step_2_Preparation_Tools\" >Etapa 2: Ferramentas de Prepara\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Step_3_Cutting_off_the_Main_Power_Supply\" >Etapa 3: Desligar a fonte de alimenta\u00e7\u00e3o principal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Step_4_Open_the_Circuit_Breaker_Panel\" >Passo 4: Abra o painel de disjuntores<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Step_5_Disconnect_the_Load_Line\" >Passo 5: Desconecte a linha de carga<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Step_6_Remove_Old_Circuit_Breakers\" >Etapa 6: Remova os disjuntores antigos<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#General_Circuit_Breaker\" >Disjuntor geral<\/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\/pt\/como-substituir-um-disjuntor\/#Special_Circuit_Breakers\" >Disjuntores especiais<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Step_7_Install_New_Circuit_Breakers\" >Etapa 7: Instale os novos disjuntores<\/a><\/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\/pt\/como-substituir-um-disjuntor\/#Step_8_Connecting_the_Load_Line\" >Etapa 8: Conectando a linha de carga<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Step_9_Testing_New_Circuit_Breakers\" >Etapa 9: Testando os novos disjuntores<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Power_on_Test\" >Teste de inicializa\u00e7\u00e3o<\/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\/pt\/como-substituir-um-disjuntor\/#Load_Test\" >Teste de carga<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Conclusion\" >Conclus\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#FAQs\" >Perguntas frequentes<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#What_to_Do_If_It_Still_Doesnt_Work_after_Replacement\" >O que fazer se ainda n\u00e3o funcionar ap\u00f3s a substitui\u00e7\u00e3o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Can_I_Use_a_Higher_Current_Breaker_to_Prevent_Tripping\" >Posso usar um disjuntor de corrente mais alta para evitar o desarme?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#When_Do_I_Need_to_Replace_a_Circuit_Breaker\" >Quando devo substituir um disjuntor?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.kdmsteel.com\/pt\/como-substituir-um-disjuntor\/#Can_I_Replace_a_Circuit_Breaker_If_Im_Not_a_Professional\" >Posso substituir um disjuntor mesmo sem ser um profissional?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Step_1_Selecting_the_Right_Circuit_Breaker\"><\/span>Passo 1: Selecionando o disjuntor correto<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47238\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breaker-1.png\" alt=\"Disjuntor-1\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breaker-1.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breaker-1-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breaker-1-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breaker-1-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>Primeiramente, verifique cuidadosamente as marca\u00e7\u00f5es ou instru\u00e7\u00f5es no disjuntor antigo para conferir o n\u00famero do modelo e a capacidade do disjuntor. E certifique-se de que o novo disjuntor seja compat\u00edvel. <a href=\"https:\/\/www.kdmsteel.com\/pt\/disjuntor-industrial\/\">disjuntor<\/a>\u00a0Possui a mesma classifica\u00e7\u00e3o de corrente, n\u00famero de polos e instala\u00e7\u00e3o que o antigo. Voc\u00ea tamb\u00e9m precisa confirmar a especifica\u00e7\u00e3o, o tipo e o modelo do <a href=\"https:\/\/www.kdmsteel.com\/pt\/painel-de-disjuntores\/\">pain\u00e9is de disjuntores<\/a>. Misturar modelos diferentes pode levar a conex\u00f5es defeituosas e at\u00e9 mesmo a acidentes. Portanto, \u00e9 melhor trabalhar com um fabricante de disjuntores e pain\u00e9is el\u00e9tricos seguro e confi\u00e1vel.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_2_Preparation_Tools\"><\/span>Etapa 2: Ferramentas de Prepara\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47244\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Screwdrivers.png\" alt=\"Chaves de fenda\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Screwdrivers.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Screwdrivers-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Screwdrivers-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Screwdrivers-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<ul>\n<li>Chaves de fenda: Tenha em m\u00e3os chaves de fenda Phillips e de ponta \u00fanica do tamanho correto e certifique-se de que sejam isoladas. Elas ser\u00e3o usadas para remover e instalar pain\u00e9is e fios.<\/li>\n<li>Mult\u00edmetro: Tenha \u00e0 m\u00e3o um mult\u00edmetro confi\u00e1vel ou uma caneta de teste de tens\u00e3o para verificar a perda de energia.<\/li>\n<li>Lanterna de cabe\u00e7a ou farol: Quando a energia \u00e9 desligada, fica escuro enquanto voc\u00ea trabalha. Tenha uma lanterna de cabe\u00e7a ou um farol para garantir que o interior do painel el\u00e9trico esteja bem iluminado.<\/li>\n<li>Luvas e \u00f3culos de prote\u00e7\u00e3o isolantes: \u00c9 recomend\u00e1vel usar luvas e \u00f3culos de prote\u00e7\u00e3o isolantes que atendam aos padr\u00f5es de um eletricista para garantir sua seguran\u00e7a.<\/li>\n<li>Outras ferramentas que voc\u00ea pode precisar: fita isolante para reparos tempor\u00e1rios, alicate de ponta fina isolado, decapador de fios.<\/li>\n<\/ul>\n<p>Note que ser\u00e1 mais conveniente remover os detritos ao redor da caixa de distribui\u00e7\u00e3o antes da opera\u00e7\u00e3o. Durante o processo de substitui\u00e7\u00e3o, voc\u00ea deve ficar sobre uma t\u00e1bua de madeira ou um tapete isolante e seco, e nunca usar joias de metal. Tamb\u00e9m \u00e9 aconselh\u00e1vel ter outra pessoa presente para auxili\u00e1-lo na opera\u00e7\u00e3o e que saiba como desligar a energia e pedir ajuda em caso de emerg\u00eancia.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_3_Cutting_off_the_Main_Power_Supply\"><\/span>Etapa 3: Desligar a fonte de alimenta\u00e7\u00e3o principal<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47239\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/distribution-box.png\" alt=\" caixa de distribui\u00e7\u00e3o \" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/distribution-box.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/distribution-box-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/distribution-box-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/distribution-box-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>Ligue o farol e localize o interruptor principal de energia na caixa de distribui\u00e7\u00e3o, desligando-o. Se a sua caixa de distribui\u00e7\u00e3o for de v\u00e1rios andares, desconecte primeiro o interruptor principal do andar e, em seguida, o interruptor de distribui\u00e7\u00e3o principal. Comece testando um disjuntor energizado com um mult\u00edmetro ou uma caneta de teste para garantir que ele funcione. Em seguida, use-o para testar os terminais de entrada do disjuntor antigo e do novo para garantir que n\u00e3o haja tens\u00e3o.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_4_Open_the_Circuit_Breaker_Panel\"><\/span>Passo 4: Abra o painel de disjuntores<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47240\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/the-Circuit-Breaker-Panel.png\" alt=\"Painel de Disjuntores-1\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/the-Circuit-Breaker-Panel.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/the-Circuit-Breaker-Panel-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/the-Circuit-Breaker-Panel-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/the-Circuit-Breaker-Panel-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>Use uma chave de fenda adequada para remover os parafusos e abra cuidadosamente o painel do disjuntor. Coloque a placa de cobertura e os parafusos em um local onde n\u00e3o atrapalhem. N\u00e3o perca os parafusos, pois ser\u00e3o necess\u00e1rios para a instala\u00e7\u00e3o posterior da placa de cobertura. Observe que o cabo de alimenta\u00e7\u00e3o dentro do painel permanece energizado mesmo ap\u00f3s o desligamento da chave geral, portanto, n\u00e3o o toque.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_5_Disconnect_the_Load_Line\"><\/span>Passo 5: Desconecte a linha de carga<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Geralmente, h\u00e1 dois fios conectados ao disjuntor. Um \u00e9 o fio fase da fonte de energia e o outro \u00e9 o fio de carga que vai para o dispositivo. Voc\u00ea precisa localizar o fio de carga do disjuntor antigo. Ele geralmente \u00e9 preto ou vermelho e est\u00e1 parafusado no terminal. Remova-o cuidadosamente usando uma chave de fenda. Voc\u00ea pode usar um alicate de bico fino para ajudar a pux\u00e1-lo; \u00e9 melhor n\u00e3o dobrar o fio. Em seguida, enrole a ponta do fio de cobre exposto com fita isolante.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_6_Remove_Old_Circuit_Breakers\"><\/span>Etapa 6: Remova os disjuntores antigos<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47241\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-1.png\" alt=\"Disjuntores-1\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-1.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-1-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-1-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-1-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"General_Circuit_Breaker\"><\/span>Disjuntor geral<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Os disjuntores geralmente s\u00e3o fixados aos trilhos de montagem na parte interna do painel por meio de ganchos de press\u00e3o, e a outra extremidade se encaixa na barra de distribui\u00e7\u00e3o. Use uma chave de fenda para puxar a extremidade do disjuntor para fora, a fim de solt\u00e1-lo da barra de distribui\u00e7\u00e3o. Em seguida, remova-o do trilho de montagem.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Special_Circuit_Breakers\"><\/span>Disjuntores especiais<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Se voc\u00ea tiver um disjuntor bipolar ou de m\u00faltiplos est\u00e1gios, ser\u00e1 necess\u00e1rio acionar ambas as extremidades simultaneamente para desconectar as conex\u00f5es da barra de distribui\u00e7\u00e3o e, em seguida, remov\u00ea-la do trilho. Al\u00e9m disso, para disjuntores GFCI\/AFCI, o fio neutro conectado \u00e0 barra de distribui\u00e7\u00e3o deve ser removido. Geralmente, trata-se de um fio flex\u00edvel branco.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_7_Install_New_Circuit_Breakers\"><\/span>Etapa 7: Instale os novos disjuntores<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47242\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-2.png\" alt=\"Disjuntores-2\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-2.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-2-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-2-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Circuit-Breakers-2-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>Verifique se o novo disjuntor apresenta danos est\u00e9ticos. Mantenha as extremidades dos fios do novo disjuntor limpas e bem conectadas. Se as extremidades dos fios estiverem danificadas e oxidadas, use um alicate de decapagem para remover cerca de 1,2 cm (0,5 polegadas) de fio de cobre limpo. Em seguida, voc\u00ea deve <a href=\"https:\/\/www.kdmsteel.com\/pt\/como-adicionar-um-disjuntor-a-um-painel-eletrico\/\">Adicione o disjuntor ao painel el\u00e9trico.<\/a>. Para instalar o disjuntor, pendure a se\u00e7\u00e3o com os ganchos de encaixe nos trilhos de montagem na parte interna do painel e, em seguida, encaixe a outra extremidade do disjuntor na ranhura contra a barra de distribui\u00e7\u00e3o. Balance levemente para garantir que n\u00e3o haja folga na instala\u00e7\u00e3o.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_8_Connecting_the_Load_Line\"><\/span>Etapa 8: Conectando a linha de carga<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Localize o orif\u00edcio de jun\u00e7\u00e3o marcado como \u201cCARGA\u201d. Remova a fita isolante da extremidade do fio de cobre e insira-o diretamente no orif\u00edcio do terminal de carga do novo disjuntor. Certifique-se de que n\u00e3o haja fios de cobre soltos e, em seguida, use uma chave de fenda isolada para apertar os parafusos da fia\u00e7\u00e3o. \u00c9 necess\u00e1rio estabilizar a linha de carga e n\u00e3o tocar em nenhuma outra parte met\u00e1lica. Caso contr\u00e1rio, pode ocorrer superaquecimento ou at\u00e9 mesmo inc\u00eandio.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Step_9_Testing_New_Circuit_Breakers\"><\/span>Etapa 9: Testando os novos disjuntores<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47243\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Crcuit-Breakers-3.png\" alt=\"Quebra-circuitos-3\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Crcuit-Breakers-3.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Crcuit-Breakers-3-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Crcuit-Breakers-3-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/02\/Crcuit-Breakers-3-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Power_on_Test\"><\/span>Teste de inicializa\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Verifique se h\u00e1 outros detritos dentro do painel e limpe-o, confirme se o novo disjuntor est\u00e1 bem conectado e, em seguida, recoloque a tampa do painel. Restaure a energia da rede el\u00e9trica acionando primeiro a alavanca do disjuntor principal para a posi\u00e7\u00e3o LIGADO. Em seguida, mova a alavanca do novo disjuntor para a posi\u00e7\u00e3o LIGADO e teste os equipamentos conectados para verificar se est\u00e3o funcionando corretamente.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Load_Test\"><\/span>Teste de carga<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Para verificar se n\u00e3o h\u00e1 erros em uso prolongado, voc\u00ea pode realizar um teste de carga. Conecte novamente uma carga pr\u00f3xima \u00e0 capacidade nominal \u00e0 rede el\u00e9trica e deixe-a funcionando por alguns minutos. Observe se o novo disjuntor desarma novamente, esquenta ou emite ru\u00eddos estranhos. Se houver algum problema, a energia deve ser desligada imediatamente para manuten\u00e7\u00e3o. Se tudo estiver bem, voc\u00ea substituiu o disjuntor corretamente. Se o seu disjuntor estiver apresentando problemas dif\u00edceis de resolver, o melhor \u00e9 contatar um profissional para realizar a manuten\u00e7\u00e3o.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclus\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Seguindo os passos descritos neste post, voc\u00ea poder\u00e1 substituir seu disjuntor rapidamente. Se voc\u00ea procura um painel el\u00e9trico adequado para um disjuntor magneto-t\u00e9rmico ou precisa de um painel personalizado, <a href=\"https:\/\/www.kdmsteel.com\/pt\/\">A\u00e7o KDM<\/a>\u00a0Deve ser a sua primeira op\u00e7\u00e3o. Se necess\u00e1rio, entre em contato conosco imediatamente.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>Perguntas frequentes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"What_to_Do_If_It_Still_Doesnt_Work_after_Replacement\"><\/span>O que fazer se ainda n\u00e3o funcionar ap\u00f3s a substitui\u00e7\u00e3o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Primeiramente, verifique se a energia el\u00e9trica foi restabelecida corretamente e use um mult\u00edmetro para medir se h\u00e1 energia chegando at\u00e9 o disjuntor. Verifique tamb\u00e9m se os fios do disjuntor est\u00e3o conectados corretamente. Voc\u00ea pode tentar desconectar os aparelhos do circuito para descartar a possibilidade de sobrecarga. Se tudo estiver correto, o ideal \u00e9 contatar um profissional para realizar a manuten\u00e7\u00e3o.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_I_Use_a_Higher_Current_Breaker_to_Prevent_Tripping\"><\/span>Posso usar um disjuntor de corrente mais alta para evitar o desarme?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u00e3o \u00e9 poss\u00edvel. O disjuntor de prote\u00e7\u00e3o serve para proteger a fia\u00e7\u00e3o. Trocar para um disjuntor de corrente mais alta pode causar superaquecimento dos fios ou at\u00e9 mesmo um inc\u00eandio. Voc\u00ea deve escolher um disjuntor que seja compat\u00edvel com o projeto do circuito.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"When_Do_I_Need_to_Replace_a_Circuit_Breaker\"><\/span>Quando devo substituir um disjuntor?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Disjuntor desarmando com frequ\u00eancia: O disjuntor desarmar\u00e1 quando a sua rede el\u00e9trica estiver sobrecarregada. Disparos ocasionais devido ao uso indevido s\u00e3o normais. No entanto, se o seu disjuntor estiver desarmando com frequ\u00eancia, voc\u00ea precisa verificar o estado do disjuntor e substitu\u00ed-lo.<\/li>\n<li>Danos ou odor: Se notar danos na apar\u00eancia do disjuntor, como queimado, derretido, rachado ou corro\u00eddo, substitua-o imediatamente. Se n\u00e3o houver danos externos, mas houver um odor, como cheiro de queimado, voc\u00ea tamb\u00e9m precisa substitu\u00ed-lo o mais r\u00e1pido poss\u00edvel.<\/li>\n<li><a href=\"https:\/\/www.kdmsteel.com\/pt\/quanto-tempo-duram-os-disjuntores\/\">Uso prolongado<\/a>Os disjuntores podem durar at\u00e9 40 anos. Mas, com o tempo, seu desempenho diminui. Para garantir sua seguran\u00e7a, o ideal \u00e9 substituir seu disjuntor antigo o quanto antes.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Can_I_Replace_a_Circuit_Breaker_If_Im_Not_a_Professional\"><\/span>Posso substituir um disjuntor mesmo sem ser um profissional?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sinceramente, \u00e9 poss\u00edvel se voc\u00ea tiver um s\u00f3lido conhecimento dos princ\u00edpios b\u00e1sicos de eletricidade, entender como os circuitos e disjuntores funcionam e, principalmente, se usar as ferramentas corretas e seguir rigorosamente os procedimentos de seguran\u00e7a passo a passo. No entanto, este \u00e9 um trabalho el\u00e9trico potencialmente perigoso. Se voc\u00ea n\u00e3o tem total confian\u00e7a em seus conhecimentos ou n\u00e3o se sente confort\u00e1vel trabalhando dentro do seu quadro de distribui\u00e7\u00e3o, ou se sua casa possui um sistema el\u00e9trico mais complexo, \u00e9 altamente recomend\u00e1vel contratar um eletricista profissional qualificado para realizar a substitui\u00e7\u00e3o com seguran\u00e7a.<\/p>","protected":false},"excerpt":{"rendered":"<p>A circuit breaker is an electrical protection device that safely interrupts the flow of electricity in the event of an abnormal current, protecting your circuits and equipment from damage and preventing the risk of fire. When a circuit breaker is not functioning properly, you need to replace it promptly to ensure safety. This article will [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":47240,"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-45819","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 v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Replace a Circuit Breaker - 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\/pt\/como-substituir-um-disjuntor\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Replace a Circuit Breaker - KDM Steel\" \/>\n<meta property=\"og:description\" content=\"A circuit breaker is an electrical protection device that safely interrupts the flow of electricity in the event of an abnormal current, protecting your circuits and equipment from damage and preventing the risk of fire. 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