{"id":12277,"date":"2025-01-11T10:38:00","date_gmt":"2025-01-11T02:38:00","guid":{"rendered":"https:\/\/www.tosunlux.eu\/?p=12277"},"modified":"2025-01-13T11:27:58","modified_gmt":"2025-01-13T03:27:58","slug":"the-interrupt-capacity-of-circuit-breakers","status":"publish","type":"post","link":"https:\/\/www.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/","title":{"rendered":"Qual \u00e9 a capacidade de interrup\u00e7\u00e3o de um disjuntor?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_63 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\" >\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 de conte\u00fado\"><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 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/#What_is_Interrupt_Capacity\" title=\"O que \u00e9 capacidade de interrup\u00e7\u00e3o?\">O que \u00e9 capacidade de interrup\u00e7\u00e3o?<\/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.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/#What_Determines_a_Circuits_Capacity\" title=\"O que determina a capacidade de um circuito?\">O que determina a capacidade de um circuito?<\/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.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/#Conductor_Size\" title=\"Tamanho do condutor\">Tamanho do condutor<\/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.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/#Breaker_Type\" title=\"Tipo de disjuntor\">Tipo de disjuntor<\/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.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/#System_Voltage_and_Load\" title=\"Tens\u00e3o e carga do sistema\">Tens\u00e3o e carga do sistema<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/#Interrupting_Capacities_of_Circuit_Breakers\" title=\"Capacidades de interrup\u00e7\u00e3o dos disjuntores\">Capacidades de interrup\u00e7\u00e3o dos disjuntores<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/#How_to_Calculate_the_Required_Interrupt_Rating\" title=\"Como calcular a classifica\u00e7\u00e3o de interrup\u00e7\u00e3o necess\u00e1ria\">Como calcular a classifica\u00e7\u00e3o de interrup\u00e7\u00e3o necess\u00e1ria<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>A capacidade de interrup\u00e7\u00e3o de um disjuntor \u00e9 sua capacidade de desconectar com seguran\u00e7a um circuito com falha interrompendo um curto-circuito ou uma corrente de sobrecarga.&nbsp;<\/p>\n\n\n\n<p>Essa classifica\u00e7\u00e3o \u00e9 essencial para selecionar o disjuntor certo para um sistema, garantindo a seguran\u00e7a e evitando danos.&nbsp;<\/p>\n\n\n\n<p>Entender as classifica\u00e7\u00f5es de interrup\u00e7\u00e3o ajuda a evitar falhas catastr\u00f3ficas ao combinar disjuntores com n\u00edveis de corrente de falha espec\u00edficos para uma instala\u00e7\u00e3o el\u00e9trica.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Interrupt_Capacity\"><\/span>O que \u00e9 capacidade de interrup\u00e7\u00e3o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Capacidade de interrup\u00e7\u00e3o refere-se \u00e0 quantidade m\u00e1xima de corrente de falha que um disjuntor pode interromper com seguran\u00e7a sem ser danificado ou representar um risco ao sistema el\u00e9trico.&nbsp;<\/p>\n\n\n\n<p>Quando ocorre um curto-circuito ou sobrecarga, a fun\u00e7\u00e3o principal do disjuntor \u00e9 isolar o circuito defeituoso do sistema.&nbsp;<\/p>\n\n\n\n<p>Se a corrente de falha exceder a capacidade de interrup\u00e7\u00e3o do disjuntor, o disjuntor poder\u00e1 n\u00e3o abrir corretamente, levando a condi\u00e7\u00f5es perigosas, como inc\u00eandios el\u00e9tricos ou danos ao equipamento.<\/p>\n\n\n\n<p>Essa classifica\u00e7\u00e3o \u00e9 normalmente expressa em quiloamperes (kA) e \u00e9 um fator crucial na sele\u00e7\u00e3o de disjuntores.&nbsp;<\/p>\n\n\n\n<p>Um disjuntor com maior capacidade de interrup\u00e7\u00e3o \u00e9 projetado para lidar com correntes de falha mais substanciais.&nbsp;<\/p>\n\n\n\n<p>Por exemplo, um disjuntor com capacidade de 10 kA pode interromper com seguran\u00e7a correntes de falha de at\u00e9 10.000 amperes.&nbsp;<\/p>\n\n\n\n<p>A escolha de um disjuntor com capacidade de interrup\u00e7\u00e3o adequada garante que, durante uma falha, o disjuntor desarme rapidamente para proteger o sistema, reduzindo o risco de danos ou inc\u00eandio.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Determines_a_Circuits_Capacity\"><\/span>O que determina a capacidade de um circuito?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A capacidade de um circuito se refere \u00e0 quantidade de corrente que ele pode suportar com seguran\u00e7a sem superaquecer ou sofrer danos permanentes.&nbsp;<\/p>\n\n\n\n<p>V\u00e1rios fatores determinam a capacidade de um circuito, incluindo o tamanho do condutor, a tens\u00e3o do sistema, o tipo de disjuntor e o projeto geral do sistema.&nbsp;<\/p>\n\n\n\n<p>Sistemas el\u00e9tricos projetados corretamente ter\u00e3o disjuntores classificados para lidar com a m\u00e1xima corrente de falha potencial que pode ocorrer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conductor_Size\"><\/span>Tamanho do condutor<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Condutores maiores permitem que mais corrente flua pelo circuito sem superaquecimento, aumentando a capacidade geral do circuito.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Breaker_Type\"><\/span>Tipo de disjuntor<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Diferentes tipos de disjuntores, como MCBs, MCCBs e ACBs, t\u00eam capacidades de interrup\u00e7\u00e3o variadas. O tipo de disjuntor escolhido deve corresponder \u00e0s necessidades espec\u00edficas do sistema.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"System_Voltage_and_Load\"><\/span>Tens\u00e3o e carga do sistema<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Sistemas de alta tens\u00e3o exigem disjuntores com maiores capacidades de interrup\u00e7\u00e3o.&nbsp;<\/p>\n\n\n\n<p>A carga m\u00e1xima no circuito influencia a classifica\u00e7\u00e3o de interrup\u00e7\u00e3o necess\u00e1ria porque uma carga maior aumenta a chance de curto-circuitos ou sobrecorrente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Interrupting_Capacities_of_Circuit_Breakers\"><\/span>Capacidades de interrup\u00e7\u00e3o dos disjuntores<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Tipo de disjuntor<\/strong><\/td><td><strong>Capacidade de interrup\u00e7\u00e3o t\u00edpica<\/strong><\/td><td><strong>Aplicativo<\/strong><\/td><\/tr><tr><td><a href=\"https:\/\/www.tosunlux.eu\/pt\/molded-case-circuit-breaker\/\">MCCB (disjuntor em caixa moldada)<\/a><\/td><td>10 kA, 25 kA, 65 kA<\/td><td>Uso industrial, comercial e residencial; protege contra sobrecargas e curtos-circuitos.<\/td><\/tr><tr><td><a href=\"https:\/\/www.tosunlux.eu\/pt\/miniature-circuit-breaker\/\">MCB (Disjuntor Miniatura)<\/a><\/td><td>6 kA, 10 kA<\/td><td>Uso residencial e comercial leve; adequado para correntes de falha mais baixas.<\/td><\/tr><tr><td>ACB (Disjuntor de Ar)<\/td><td>10 kA a 85 kA<\/td><td>Aplica\u00e7\u00f5es industriais; lida com correntes de falha mais altas.<\/td><\/tr><tr><td>VCB (Disjuntor a V\u00e1cuo)<\/td><td>25 kA a 40 kA<\/td><td>Sistemas de m\u00e9dia tens\u00e3o; ideais para prote\u00e7\u00e3o de transformadores e linhas de distribui\u00e7\u00e3o.<\/td><\/tr><tr><td>Disjuntor SF\u2086<\/td><td>100 kA e acima<\/td><td>Aplica\u00e7\u00f5es de alta tens\u00e3o; usado em subesta\u00e7\u00f5es e usinas de energia.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Calculate_the_Required_Interrupt_Rating\"><\/span>Como calcular a classifica\u00e7\u00e3o de interrup\u00e7\u00e3o necess\u00e1ria<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Para garantir que o disjuntor selecionado seja adequado para o sistema, \u00e9 necess\u00e1rio calcular a capacidade de interrup\u00e7\u00e3o necess\u00e1ria.&nbsp;<\/p>\n\n\n\n<p>Isso envolve determinar a corrente de falha m\u00e1xima que pode ocorrer no sistema.<\/p>\n\n\n\n<p><strong>Etapa 1: Identifique a corrente de falha<\/strong>: Comece identificando o n\u00edvel de falha e a imped\u00e2ncia do transformador.<\/p>\n\n\n\n<p><strong>Etapa 2: Calcular a corrente de curto-circuito prospectiva<\/strong>: Use a configura\u00e7\u00e3o do sistema para calcular a corrente de falha m\u00e1xima que pode resultar de um curto-circuito.<\/p>\n\n\n\n<p><strong>Etapa 3: Selecione o disjuntor<\/strong>: Ajuste a classifica\u00e7\u00e3o de interrup\u00e7\u00e3o do disjuntor para exceder a corrente de falha calculada para garantir a prote\u00e7\u00e3o.<\/p>\n\n\n\n<p>Em instala\u00e7\u00f5es complexas, ferramentas de software podem auxiliar em c\u00e1lculos precisos, garantindo a sele\u00e7\u00e3o correta do disjuntor.<\/p>\n\n\n\n\n  <style>\n\t\t\t.module {\n\t\t\t\tmargin: 10px 0 30px 0;\n\t\t\t\twidth: 100%;\n\t\t\t\ttext-align: left;\n\t\t\t}\n\t\t\t\/* \u6807\u9898 *\/\n\t\t\t.module .module-title {\n\t\t\t\tfont-size: 18px;\n\t\t\t\tdisplay: flex;\n\t\t\t\talign-items: center;\n\t\t\t}\n\n\t\t\t.module .module-button {\n\t\t\t\tcursor: pointer;\n\t\t\t\tborder: 0px;\n\t\t\t\ttext-align: center;\n\t\t\t\tmargin-left: 10px;\n\t\t\t\tbackground: none;\n\t\t\t}\n\n\t\t\t.module .module-content {\n\t\t\t\tdisplay: none;\n\t\t\t}\n\n\t\t\t.module .module-content.show {\n\t\t\t\tdisplay: 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18px;'>\n\t\t\t\t<!-- \u8fd9\u662f\u6807\u9898 -->\n\t\t\t\tFontes de artigos\n\t\t\t\t<button class='module-button'>\n\t\t\t\t\t<svg id='svg-1' style='display:block' t='1710230154863' class='icon' viewbox='0 0 1026 1024'\n\t\t\t\t\t\tversion='1.1' xmlns='http:\/\/www.w3.org\/2000\/svg' p-id='1843' width='18' height='18'>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u5927\u5c0f\u8bf7\u5728width\u548cheight\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M511.602721 1023.001027a511.474051 511.474051 0 1 1 360.629164-148.84694 509.476105 509.476105 0 0 1-360.629164 149.845913z m0-941.032335c-109.887003 0-220.772979 41.956856-304.686691 125.870567-167.827423 168.826396-167.827423 441.545958 0 609.373381s440.546985 167.827423 609.373381 0c167.827423-167.827423 167.827423-440.546985 0-609.373381-83.913711-82.914739-194.799687-124.871594-304.68669-124.871595z m332.657927 763.215185z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='1844'><\/path>\n\t\t\t\t\t\t\t<!-- 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\u4fee\u6539\u56fe\u6807\u5927\u5c0f\u8bf7\u5728width\u548cheight\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M511.602721 1023.001027a511.474051 511.474051 0 1 1 360.629164-148.84694 509.476105 509.476105 0 0 1-360.629164 149.845913z m0-941.032335c-109.887003 0-220.772979 41.956856-304.686691 125.870567-167.827423 168.826396-167.827423 441.545958 0 609.373381s440.546985 167.827423 609.373381 0c167.827423-167.827423 167.827423-440.546985 0-609.373381-83.913711-82.914739-194.799687-124.871594-304.68669-124.871595z m332.657927 763.215185z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='2000'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M780.326392 552.484859H241.880077a39.95891 39.95891 0 0 1 0-79.91782h538.446315a39.95891 39.95891 0 0 1 0 79.91782z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='2001'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t<\/svg>\n\t\t\t\t<\/button>\n\t\t\t<\/div>\n\t\t\t<div class='module-content'>\n\t\t\t\t<div class='d1' style='background-color: #00b1cdbd'>\n\t\t\t\t\t<!-- \u8fd9\u662f\u6587\u5b57\u7b80\u4ecb -->\n\t\t\t\t\t<span style='font-size:18px'>O TOSUNlux utiliza apenas fontes de alta qualidade, incluindo estudos revisados por pares, para apoiar os fatos contidos em nossos artigos. Nosso compromisso com a precis\u00e3o e a confiabilidade garante que os leitores recebam informa\u00e7\u00f5es bem pesquisadas nas quais podem confiar.\r\n\t\t\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<ul class='d2'>\n\t\t\t\t\n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/ewh.ieee.org\/r6\/san_francisco\/ias\/archive\/pdf\/archived_presentations\/Interrupting_Capacity.pdf'>Capacidade de interrup\u00e7\u00e3o do disjuntor<\/a><\/li>\n  \n\t\t\t\t<\/ul>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<script>\n\t\t\tconst moduleButtons = document.querySelectorAll('.module-button');\n\t\t\tconst svg1 = document.getElementById('svg-1');\n\t\t\tconst svg2 = document.getElementById('svg-2');\n\t\t\tfor (const button of moduleButtons) {\n\t\t\t\tbutton.addEventListener('click', function() {\n\t\t\t\t\tconst content = this.parentNode.nextElementSibling;\n\t\t\t\t\tcontent.classList.toggle('show');\n\t\t\t\t\tconst svg = this.querySelector('svg');\n\t\t\t\t\tconst plusPath = svg.querySelector('#plus');\n\t\t\t\t});\n\t\t\t\tsvg1.addEventListener('click', function() {\n\t\t\t\t\tsvg1.style.display = 'none';\n\t\t\t\t\tsvg2.style.display = 'block';\n\t\t\t\t});\n\n\t\t\t\tsvg2.addEventListener('click', function() {\n\t\t\t\t\tsvg2.style.display = 'none';\n\t\t\t\t\tsvg1.style.display = 'block';\n\t\t\t\t});\n\t\t\t}\n\t\t<\/script>\n\n  \n  <style>\n\t\t\t.module {\n\t\t\t\tmargin: 10px 0 30px 0;\n\t\t\t\twidth: 100%;\n\t\t\t\ttext-align: left;\n\t\t\t}\n\t\t\t\/* \u6807\u9898 *\/\n\t\t\t.module .module-title {\n\t\t\t\tfont-size: 18px;\n\t\t\t\tdisplay: flex;\n\t\t\t\talign-items: center;\n\t\t\t}\n\n\t\t\t.module .module-button {\n\t\t\t\tcursor: pointer;\n\t\t\t\tborder: 0px;\n\t\t\t\ttext-align: center;\n\t\t\t\tmargin-left: 10px;\n\t\t\t\tbackground: none;\n\t\t\t}\n\n\t\t\t.module .module-content {\n\t\t\t\tdisplay: none;\n\t\t\t}\n\n\t\t\t.module .module-content.show {\n\t\t\t\tdisplay: block;\n\t\t\t}\n\t\t\t\/* \u7b2c\u4e00\u5757\u5185\u5bb9 *\/\n\t\t\t.module .d1 {\n\t\t\t\twidth: 95%;\n\t\t\t\t\/* \u80cc\u666f\u989c\u8272 *\/\n\t\t\t\tpadding: 1% 2.5% 1% 2.5%;\n\t\t\t\tmargin-top: 3%;\n\t\t\t}\n\t\t\t\/* \u7b2c\u4e8c\u5757\u5185\u5bb9 *\/\n\t\t\t.module .d2 {\n\t\t\t\twidth: 95%;\n\t\t\t\tpadding: 3% 2.5% 3% 2.5%;\n\t\t\t}\n            \/* \u6240\u6709a\u94fe\u63a5\u4e0a\u6587\u5b57 *\/\n            .module .aaa {\n\t\t\t\t\/* \u989c\u8272 *\/\n\t\t\t\tcolor:  #00b1cdbd;\n\t\t\t\t\/* \u6587\u5b57\u4e0b\u5212\u7ebf *\/\n\t\t\t\ttext-decoration: underline;\n\t\t\t}\n\t\t\t\/* \u4e0b\u65b9\u659c\u4f53\u6587\u5b57 *\/\n\t\t\t.module .a2 {\n\t\t\t\t\/* \u659c\u4f53 *\/\n\t\t\t\tfont-style: italic;\n\t\t\t}\n\t\t\t\/* \u6240\u6709a\u94fe\u63a5\u4e0a\u6587\u5b57\u60ac\u6d6e\u53d8\u8272 *\/\n\t\t\t.module .aaa:hover {\n\t\t\t\t\/* \u989c\u8272 *\/\n\t\t\t\tcolor: #D3CCFF;\n\t\t\t}\n\t\t<\/style>\n  <div class='module'>\n\t\t\t<div class='module-title' style='font-size: 18px;'>\n\t\t\t\t<!-- \u8fd9\u662f\u6807\u9898 -->\n\t\t\t\tFontes de artigos\n\t\t\t\t<button class='module-button'>\n\t\t\t\t\t<svg id='svg-1' style='display:block' t='1710230154863' class='icon' viewbox='0 0 1026 1024'\n\t\t\t\t\t\tversion='1.1' xmlns='http:\/\/www.w3.org\/2000\/svg' p-id='1843' width='18' height='18'>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u5927\u5c0f\u8bf7\u5728width\u548cheight\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M511.602721 1023.001027a511.474051 511.474051 0 1 1 360.629164-148.84694 509.476105 509.476105 0 0 1-360.629164 149.845913z m0-941.032335c-109.887003 0-220.772979 41.956856-304.686691 125.870567-167.827423 168.826396-167.827423 441.545958 0 609.373381s440.546985 167.827423 609.373381 0c167.827423-167.827423 167.827423-440.546985 0-609.373381-83.913711-82.914739-194.799687-124.871594-304.68669-124.871595z m332.657927 763.215185z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='1844'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M780.326392 552.484859H241.880077a39.95891 39.95891 0 0 1 0-79.91782h538.446315a39.95891 39.95891 0 0 1 0 79.91782z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='1845'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M511.602721 822.207503a39.95891 39.95891 0 0 1-39.958911-39.95891V243.802278a39.95891 39.95891 0 1 1 79.917821 0v538.446315a39.95891 39.95891 0 0 1-39.95891 39.95891z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='1846'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t<\/svg>\n\t\t\t\t\t<svg id='svg-2' style='display:none' t='1710230227147' class='icon' viewbox='0 0 1026 1024'\n\t\t\t\t\t\tversion='1.1' xmlns='http:\/\/www.w3.org\/2000\/svg' p-id='1999' width='18' height='18'>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u5927\u5c0f\u8bf7\u5728width\u548cheight\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M511.602721 1023.001027a511.474051 511.474051 0 1 1 360.629164-148.84694 509.476105 509.476105 0 0 1-360.629164 149.845913z m0-941.032335c-109.887003 0-220.772979 41.956856-304.686691 125.870567-167.827423 168.826396-167.827423 441.545958 0 609.373381s440.546985 167.827423 609.373381 0c167.827423-167.827423 167.827423-440.546985 0-609.373381-83.913711-82.914739-194.799687-124.871594-304.68669-124.871595z m332.657927 763.215185z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='2000'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M780.326392 552.484859H241.880077a39.95891 39.95891 0 0 1 0-79.91782h538.446315a39.95891 39.95891 0 0 1 0 79.91782z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='2001'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t<\/svg>\n\t\t\t\t<\/button>\n\t\t\t<\/div>\n\t\t\t<div class='module-content'>\n\t\t\t\t<div class='d1' style='background-color: #00b1cdbd'>\n\t\t\t\t\t<!-- \u8fd9\u662f\u6587\u5b57\u7b80\u4ecb -->\n\t\t\t\t\t<span style='font-size:18px'>O TOSUNlux utiliza apenas fontes de alta qualidade, incluindo estudos revisados por pares, para apoiar os fatos contidos em nossos artigos. Nosso compromisso com a precis\u00e3o e a confiabilidade garante que os leitores recebam informa\u00e7\u00f5es bem pesquisadas nas quais podem confiar.\r\n\t\t\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<ul class='d2'>\n\t\t\t\t\n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/ewh.ieee.org\/r6\/san_francisco\/ias\/archive\/pdf\/archived_presentations\/Interrupting_Capacity.pdf'>Capacidade de interrup\u00e7\u00e3o do disjuntor<\/a><\/li>\n  \n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/www.eaton.com\/content\/dam\/eaton\/products\/electrical-circuit-protection\/fuses\/solution-center\/bus-ele-tech-lib-interrupting-capacity-vs-interrupting-rating.pdf'>Aplica\u00e7\u00e3o de classifica\u00e7\u00e3o de interrup\u00e7\u00e3o: disjuntores<\/a><\/li>\n  \n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/www.se.com\/us\/en\/faqs\/FA93276\/'>O que significa Ampere Interrupting Rating em um circuito<\/a><\/li>\n  \n\t\t\t\t<\/ul>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<script>\n\t\t\tconst moduleButtons = document.querySelectorAll('.module-button');\n\t\t\tconst svg1 = document.getElementById('svg-1');\n\t\t\tconst svg2 = document.getElementById('svg-2');\n\t\t\tfor (const button of moduleButtons) {\n\t\t\t\tbutton.addEventListener('click', function() {\n\t\t\t\t\tconst content = this.parentNode.nextElementSibling;\n\t\t\t\t\tcontent.classList.toggle('show');\n\t\t\t\t\tconst svg = this.querySelector('svg');\n\t\t\t\t\tconst plusPath = svg.querySelector('#plus');\n\t\t\t\t});\n\t\t\t\tsvg1.addEventListener('click', function() {\n\t\t\t\t\tsvg1.style.display = 'none';\n\t\t\t\t\tsvg2.style.display = 'block';\n\t\t\t\t});\n\n\t\t\t\tsvg2.addEventListener('click', function() {\n\t\t\t\t\tsvg2.style.display = 'none';\n\t\t\t\t\tsvg1.style.display = 'block';\n\t\t\t\t});\n\t\t\t}\n\t\t<\/script>\n\n  \n  <style>\n\t\t\t.module {\n\t\t\t\tmargin: 10px 0 30px 0;\n\t\t\t\twidth: 100%;\n\t\t\t\ttext-align: left;\n\t\t\t}\n\t\t\t\/* \u6807\u9898 *\/\n\t\t\t.module .module-title {\n\t\t\t\tfont-size: 18px;\n\t\t\t\tdisplay: flex;\n\t\t\t\talign-items: center;\n\t\t\t}\n\n\t\t\t.module .module-button {\n\t\t\t\tcursor: pointer;\n\t\t\t\tborder: 0px;\n\t\t\t\ttext-align: center;\n\t\t\t\tmargin-left: 10px;\n\t\t\t\tbackground: none;\n\t\t\t}\n\n\t\t\t.module .module-content {\n\t\t\t\tdisplay: none;\n\t\t\t}\n\n\t\t\t.module .module-content.show {\n\t\t\t\tdisplay: block;\n\t\t\t}\n\t\t\t\/* \u7b2c\u4e00\u5757\u5185\u5bb9 *\/\n\t\t\t.module .d1 {\n\t\t\t\twidth: 95%;\n\t\t\t\t\/* \u80cc\u666f\u989c\u8272 *\/\n\t\t\t\tpadding: 1% 2.5% 1% 2.5%;\n\t\t\t\tmargin-top: 3%;\n\t\t\t}\n\t\t\t\/* \u7b2c\u4e8c\u5757\u5185\u5bb9 *\/\n\t\t\t.module .d2 {\n\t\t\t\twidth: 95%;\n\t\t\t\tpadding: 3% 2.5% 3% 2.5%;\n\t\t\t}\n            \/* \u6240\u6709a\u94fe\u63a5\u4e0a\u6587\u5b57 *\/\n            .module .aaa {\n\t\t\t\t\/* \u989c\u8272 *\/\n\t\t\t\tcolor:  #00b1cdbd;\n\t\t\t\t\/* \u6587\u5b57\u4e0b\u5212\u7ebf *\/\n\t\t\t\ttext-decoration: underline;\n\t\t\t}\n\t\t\t\/* \u4e0b\u65b9\u659c\u4f53\u6587\u5b57 *\/\n\t\t\t.module .a2 {\n\t\t\t\t\/* \u659c\u4f53 *\/\n\t\t\t\tfont-style: italic;\n\t\t\t}\n\t\t\t\/* \u6240\u6709a\u94fe\u63a5\u4e0a\u6587\u5b57\u60ac\u6d6e\u53d8\u8272 *\/\n\t\t\t.module .aaa:hover {\n\t\t\t\t\/* \u989c\u8272 *\/\n\t\t\t\tcolor: #D3CCFF;\n\t\t\t}\n\t\t<\/style>\n  <div class='module'>\n\t\t\t<div class='module-title' style='font-size: 18px;'>\n\t\t\t\t<!-- \u8fd9\u662f\u6807\u9898 -->\n\t\t\t\tFontes de artigos\n\t\t\t\t<button class='module-button'>\n\t\t\t\t\t<svg id='svg-1' style='display:block' t='1710230154863' class='icon' viewbox='0 0 1026 1024'\n\t\t\t\t\t\tversion='1.1' xmlns='http:\/\/www.w3.org\/2000\/svg' p-id='1843' width='18' height='18'>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u5927\u5c0f\u8bf7\u5728width\u548cheight\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M511.602721 1023.001027a511.474051 511.474051 0 1 1 360.629164-148.84694 509.476105 509.476105 0 0 1-360.629164 149.845913z m0-941.032335c-109.887003 0-220.772979 41.956856-304.686691 125.870567-167.827423 168.826396-167.827423 441.545958 0 609.373381s440.546985 167.827423 609.373381 0c167.827423-167.827423 167.827423-440.546985 0-609.373381-83.913711-82.914739-194.799687-124.871594-304.68669-124.871595z m332.657927 763.215185z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='1844'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M780.326392 552.484859H241.880077a39.95891 39.95891 0 0 1 0-79.91782h538.446315a39.95891 39.95891 0 0 1 0 79.91782z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='1845'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M511.602721 822.207503a39.95891 39.95891 0 0 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0-609.373381-83.913711-82.914739-194.799687-124.871594-304.68669-124.871595z m332.657927 763.215185z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='2000'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t\t<path\n\t\t\t\t\t\t\td='M780.326392 552.484859H241.880077a39.95891 39.95891 0 0 1 0-79.91782h538.446315a39.95891 39.95891 0 0 1 0 79.91782z'\n\t\t\t\t\t\t\tfill=' #00b1cdbd' p-id='2001'><\/path>\n\t\t\t\t\t\t\t<!-- \u4fee\u6539\u56fe\u6807\u989c\u8272\u8bf7\u5728fill\u4e2d\u6539 -->\n\t\t\t\t\t<\/svg>\n\t\t\t\t<\/button>\n\t\t\t<\/div>\n\t\t\t<div class='module-content'>\n\t\t\t\t<div class='d1' style='background-color: #00b1cdbd'>\n\t\t\t\t\t<!-- \u8fd9\u662f\u6587\u5b57\u7b80\u4ecb -->\n\t\t\t\t\t<span style='font-size:18px'>O TOSUNlux utiliza apenas fontes de alta qualidade, incluindo estudos revisados por pares, para apoiar os fatos contidos em nossos artigos. Nosso compromisso com a precis\u00e3o e a confiabilidade garante que os leitores recebam informa\u00e7\u00f5es bem pesquisadas nas quais podem confiar.\r\n\t\t\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<ul class='d2'>\n\t\t\t\t\n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/ewh.ieee.org\/r6\/san_francisco\/ias\/archive\/pdf\/archived_presentations\/Interrupting_Capacity.pdf'>Capacidade de interrup\u00e7\u00e3o do disjuntor<\/a><\/li>\n  \n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/www.eaton.com\/content\/dam\/eaton\/products\/electrical-circuit-protection\/fuses\/solution-center\/bus-ele-tech-lib-interrupting-capacity-vs-interrupting-rating.pdf'>Aplica\u00e7\u00e3o de classifica\u00e7\u00e3o de interrup\u00e7\u00e3o: disjuntores<\/a><\/li>\n  \n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/www.se.com\/us\/en\/faqs\/FA93276\/'>O que significa Ampere Interrupting Rating em um circuito<\/a><\/li>\n  \n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/www.iallway.com\/blog\/molded-case-circuit-breaker\/mccb-interrupting-capacity-considerations\/'>Como escolher MCCBs com base na capacidade de interrup\u00e7\u00e3o<\/a><\/li>\n  \n  <li style='list-style: decimal;font-size:18px;'><a class='aaa a2' target='_blank' href='https:\/\/www.researchgate.net\/publication\/4093657_Circuit_breaker_interrupting_capacity_and_short-time_current_ratings'>Capacidade de interrup\u00e7\u00e3o do disjuntor<\/a><\/li>\n  \n\t\t\t\t<\/ul>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<script>\n\t\t\tconst moduleButtons = document.querySelectorAll('.module-button');\n\t\t\tconst svg1 = document.getElementById('svg-1');\n\t\t\tconst svg2 = document.getElementById('svg-2');\n\t\t\tfor (const button of moduleButtons) {\n\t\t\t\tbutton.addEventListener('click', function() {\n\t\t\t\t\tconst content = this.parentNode.nextElementSibling;\n\t\t\t\t\tcontent.classList.toggle('show');\n\t\t\t\t\tconst svg = this.querySelector('svg');\n\t\t\t\t\tconst plusPath = svg.querySelector('#plus');\n\t\t\t\t});\n\t\t\t\tsvg1.addEventListener('click', function() {\n\t\t\t\t\tsvg1.style.display = 'none';\n\t\t\t\t\tsvg2.style.display = 'block';\n\t\t\t\t});\n\n\t\t\t\tsvg2.addEventListener('click', function() {\n\t\t\t\t\tsvg2.style.display = 'none';\n\t\t\t\t\tsvg1.style.display = 'block';\n\t\t\t\t});\n\t\t\t}\n\t\t<\/script>","protected":false},"excerpt":{"rendered":"<p>The interrupt capacity of a circuit breaker is its ability to safely disconnect a faulted circuit by interrupting a short circuit or overload current.&nbsp; This rating is essential for selecting the right breaker for a system, ensuring safety, and preventing damage.&nbsp; Understanding interrupt ratings helps avoid catastrophic failures by matching breakers with fault current levels specific to an electrical installation. What is Interrupt Capacity? Interrupt capacity refers to the maximum amount of fault current that a circuit breaker can safely interrupt without being damaged or posing a hazard to the electrical system.&nbsp; When a short circuit or overload occurs, the breaker\u2019s primary function is to isolate the faulty circuit from the system.&nbsp; If the fault current exceeds the breaker\u2019s interrupt capacity, the breaker may fail to open properly, leading to dangerous conditions like electrical fires or equipment damage. This rating is typically expressed in kiloamperes (kA) and is a crucial factor when selecting circuit breakers.&nbsp; A breaker with a higher interrupt capacity is designed to handle more substantial fault currents.&nbsp; For example, a breaker rated at 10 kA can safely interrupt fault currents up to 10,000 amperes.&nbsp; Choosing a breaker with an appropriate interrupt capacity ensures that, during a fault, the breaker will trip quickly to protect the system, reducing the risk of damage or fire. What Determines a Circuit&#8217;s Capacity? A circuit\u2019s capacity refers to the amount of current it can handle safely without overheating or suffering permanent damage.&nbsp; Several factors determine a circuit&#8217;s capacity, including conductor size, system voltage, breaker type, and overall [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":12278,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-12277","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is the Interrupt Capacity of a Circuit Breaker? - TOSUNlux Official Site - Electrical Circuit Breaker Manufacturer in China<\/title>\n<meta name=\"description\" content=\"Understanding the interrupt capacity of circuit breakers is vital for the safe operation of electrical systems.\" \/>\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.tosunlux.eu\/pt\/blog\/the-interrupt-capacity-of-circuit-breakers\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the Interrupt Capacity of a Circuit Breaker? - 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