{"id":12793,"date":"2025-12-10T16:14:23","date_gmt":"2025-12-10T08:14:23","guid":{"rendered":"https:\/\/www.tosunlux.eu\/?p=12793"},"modified":"2025-12-19T15:23:33","modified_gmt":"2025-12-19T07:23:33","slug":"standard-sizes-of-circuit-breakers","status":"publish","type":"post","link":"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/","title":{"rendered":"Quais s\u00e3o os tamanhos padr\u00e3o dos disjuntores?"},"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\/standard-sizes-of-circuit-breakers\/#Why_Circuit_Breaker_Size_Matters_in_Real_Projects\" title=\"Why Circuit Breaker Size Matters in Real Projects\">Why Circuit Breaker Size Matters in Real Projects<\/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\/standard-sizes-of-circuit-breakers\/#Common_Circuit_Breaker_Amp_Sizes\" title=\"Tamanhos comuns de amperes de disjuntores\">Tamanhos comuns de amperes de disjuntores<\/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\/standard-sizes-of-circuit-breakers\/#1_Residential_Circuit_Breakers\" title=\"1. Disjuntores residenciais\">1. Disjuntores residenciais<\/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\/standard-sizes-of-circuit-breakers\/#Residential_Breaker_Sizes_and_Typical_Loads\" title=\"Residential Breaker Sizes and Typical Loads\">Residential Breaker Sizes and Typical Loads<\/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\/standard-sizes-of-circuit-breakers\/#2_Industrial_Commercial_Circuit_Breakers\" title=\"2. Disjuntores industriais e comerciais\">2. Disjuntores industriais e comerciais<\/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.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Industrial_Breaker_Sizes_by_Application\" title=\"Industrial Breaker Sizes by Application\">Industrial Breaker Sizes by Application<\/a><\/li><\/ul><\/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\/standard-sizes-of-circuit-breakers\/#Breaker_Frame_Sizes_and_Their_Importance\" title=\"Tamanhos de quadros de disjuntores e sua import\u00e2ncia\">Tamanhos de quadros de disjuntores e sua import\u00e2ncia<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Breaker_Type_vs_Frame_Size\" title=\"Breaker Type vs Frame Size\">Breaker Type vs Frame Size<\/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.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Choosing_the_Right_Circuit_Breaker_Size\" title=\"Escolhendo o tamanho certo do disjuntor\">Escolhendo o tamanho certo do disjuntor<\/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.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Common_Breaker_Sizing_Mistakes\" title=\"Common Breaker Sizing Mistakes\">Common Breaker Sizing Mistakes<\/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.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#FAQs\" title=\"Perguntas frequentes\">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-12\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#1_What_is_the_smallest_standard_circuit_breaker_size\" title=\"1. Qual \u00e9 o menor tamanho de disjuntor padr\u00e3o?\">1. Qual \u00e9 o menor tamanho de disjuntor padr\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.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#2_What_size_breaker_is_used_for_a_220V_circuit\" title=\"2. Qual tamanho de disjuntor \u00e9 usado para um circuito de 220 V?\">2. Qual tamanho de disjuntor \u00e9 usado para um circuito de 220 V?<\/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.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#3_What_is_the_difference_between_breaker_frame_sizes_and_amp_ratings\" title=\"3. Qual \u00e9 a diferen\u00e7a entre os tamanhos da estrutura do disjuntor e as classifica\u00e7\u00f5es de amperes?\">3. Qual \u00e9 a diferen\u00e7a entre os tamanhos da estrutura do disjuntor e as classifica\u00e7\u00f5es de amperes?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#About_the_Data_and_Experience\" title=\"About the Data and Experience\">About the Data and Experience<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Conclusion\" title=\"Conclus\u00e3o\">Conclus\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Resources\" title=\"Recursos\">Recursos<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#%F0%9F%94%8E_Recommended_Reading_for_Circuit_Breaker_Sizes\" title=\"\ud83d\udd0e Leitura recomendada para tamanhos de disjuntores\">\ud83d\udd0e Leitura recomendada para tamanhos de disjuntores<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Standard_Sizes_of_Circuit_Breakers\" title=\"                  Tamanhos padr\u00e3o de disjuntores              \">\n        \n          Tamanhos padr\u00e3o de disjuntores\n        \n      <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#Breaking_Capacity_vs_Circuit_Breaker_Ratings\" title=\"                  Capacidade de interrup\u00e7\u00e3o vs. classifica\u00e7\u00f5es de disjuntores              \">\n        \n          Capacidade de interrup\u00e7\u00e3o vs. classifica\u00e7\u00f5es de disjuntores\n        \n      <\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/#What_Type_of_Circuit_Breaker_Do_I_Need\" title=\"                  Que tipo de disjuntor eu preciso?              \">\n        \n          Que tipo de disjuntor eu preciso?\n        \n      <\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p>Os disjuntores v\u00eam em tamanhos diferentes com base em sua fun\u00e7\u00e3o e capacidade el\u00e9trica. Os tamanhos padr\u00e3o de disjuntores referem-se \u00e0s v\u00e1rias classifica\u00e7\u00f5es de amperes projetadas para proteger sistemas el\u00e9tricos de sobrecargas e curtos-circuitos. Esses tamanhos variam dependendo do n\u00edvel de tens\u00e3o, do tipo de aplica\u00e7\u00e3o e do equipamento que est\u00e1 sendo alimentado.<\/p>\n\n\n\n<p>Neste guia, detalharemos os tamanhos de amperes dos disjuntores, os tamanhos das estruturas dos disjuntores e os tamanhos comuns de disjuntores para ajudar voc\u00ea a entender como eles funcionam e qual \u00e9 o melhor para suas necessidades.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Circuit_Breaker_Size_Matters_in_Real_Projects\"><\/span><strong>Why Circuit Breaker Size Matters in Real Projects<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>From our experience working with distributors and electrical contractors, circuit breaker sizing issues are one of the <strong>most common causes of system faults<\/strong>.<\/p>\n\n\n\n<p>A breaker that is too small will trip frequently.<br>A breaker that is too large may fail to protect cables and equipment.<\/p>\n\n\n\n<p>That is why understanding <strong>standard sizes<\/strong>, not just amp numbers, is critical before selecting any circuit breaker.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Circuit_Breaker_Amp_Sizes\"><\/span><strong>Tamanhos comuns de amperes de disjuntores<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Residential_Circuit_Breakers\"><\/span><strong>1. Disjuntores residenciais<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A maioria das casas usa disjuntores de 120 V e 240 V projetados para lidar com diferentes cargas de energia. Os tamanhos de disjuntores mais comuns para aplica\u00e7\u00f5es residenciais incluem:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Disjuntores de 15 amperes<\/strong> \u2013 Usado para ilumina\u00e7\u00e3o, pequenos eletrodom\u00e9sticos e tomadas em geral.<\/li>\n\n\n\n<li><strong>Disjuntores de 20 amperes \u2013<\/strong> Necess\u00e1rio para cozinhas, banheiros e lavanderias, onde \u00e9 necess\u00e1ria maior demanda de energia.<\/li>\n\n\n\n<li><strong>Disjuntores de 30 amperes <\/strong>\u2013 Frequentemente usado em secadoras e pequenas unidades de ar condicionado.<\/li>\n\n\n\n<li><strong>Disjuntores de 40 a 50 amperes <\/strong>\u2013 Projetado para fog\u00f5es, fornos e aquecedores de \u00e1gua el\u00e9tricos.<\/li>\n\n\n\n<li><strong>Disjuntores de 60 amperes <\/strong>\u2013 Usado para grandes sistemas HVAC, subpain\u00e9is e carregadores EV.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Residential_Breaker_Sizes_and_Typical_Loads\"><\/span>Residential Breaker Sizes and Typical Loads<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Tamanho do disjuntor<\/th><th>Tens\u00e3o<\/th><th>Aplica\u00e7\u00e3o t\u00edpica<\/th><\/tr><\/thead><tbody><tr><td>15A<\/td><td>120 V<\/td><td>Lighting, wall outlets<\/td><\/tr><tr><td>20A<\/td><td>120 V<\/td><td>Kitchen, bathroom circuits<\/td><\/tr><tr><td>30A<\/td><td>240 V<\/td><td>Dryers, small AC units<\/td><\/tr><tr><td>40A\u201350A<\/td><td>240 V<\/td><td>Ovens, water heaters<\/td><\/tr><tr><td>60A<\/td><td>240 V<\/td><td>EV chargers, subpanels<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><a href=\"https:\/\/www.tosunlux.eu\/pt\/products\/tsb3-63-miniature-circuit-breaker-2\/\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB3-63-1P-1-1024x1024.jpg\" alt=\"Disjuntor Miniatura TSB3-63\" class=\"wp-image-1756\" style=\"width:300px;height:0px\" srcset=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB3-63-1P-1-1024x1024.jpg 1024w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB3-63-1P-1-300x300.jpg 300w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB3-63-1P-1-150x150.jpg 150w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB3-63-1P-1-768x768.jpg 768w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB3-63-1P-1-1536x1536.jpg 1536w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB3-63-1P-1.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/div>\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <title>Destaque do produto Hero<\/title>\n  <style>\n    .hero-card {\n      display: flex;\n      flex-wrap: wrap;\n      align-items: center;\n      background: #f7f8fa;\n      border-radius: 16px;\n      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\n      padding: 24px;\n      max-width: 900px;\n      margin: 40px auto;\n      font-family: Arial, sans-serif;\n      text-decoration: none;\n      color: inherit;\n      font-family: 'Poppins';\n    }\n\n    .hero-image {\n      width: 220px;\n      height: auto;\n      border-radius: 12px;\n      object-fit: cover;\n      flex-shrink: 0;\n    }\n\n    .hero-content {\n      padding-left: 24px;\n      flex: 1;\n      min-width: 260px;\n    }\n\n    .hero-title {\n      font-size: 1.6rem;\n      font-weight: bold;\n      margin-bottom: 12px;\n      color: #222;\n      font-family: 'Poppins';\n    }\n\n    .hero-description {\n      font-size: 1rem;\n      color: #555;\n      margin-bottom: 18px;\n    }\n\n    .hero-link {\n      display: inline-block;\n      padding: 10px 20px;\n      background-color: #0066cc;\n      color: #fff;\n      text-decoration: none;\n      border-radius: 8px;\n      font-weight: bold;\n      transition: background 0.2s ease-in-out;\n    }\n\n    .hero-link:hover {\n      background-color: #004c99;\n    }\n\n    @media (max-width: 640px) {\n      .hero-card {\n        flex-direction: column;\n        text-align: center;\n      }\n\n      .hero-content {\n        padding-left: 0;\n        padding-top: 20px;\n      }\n\n      .hero-image {\n        width: 100%;\n        max-width: 280px;\n      }\n    }\n  <\/style>\n<\/head>\n<body>\n\n<a class=\"hero-card\" href=\"https:\/\/www.tosunlux.eu\/pt\/products\/tsm2-moulded-case-circuit-breaker\/\" target=\"_blank\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSM2-150.jpg\" alt=\"Disjuntor de caixa moldada TSM2\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">Disjuntor de caixa moldada TSM2<\/div>\n    <div class=\"hero-description\">O disjuntor em caixa moldada TSM2 oferece alto desempenho para prote\u00e7\u00e3o contra sobrecarga e curto-circuito, tornando-o ideal para aplica\u00e7\u00f5es industriais e comerciais.<\/div>\n    <span class=\"hero-link\">Ver produto<\/span>\n  <\/div>\n<\/a>\n\n<\/body>\n<\/html>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Industrial_Commercial_Circuit_Breakers\"><\/span><strong>2. Disjuntores industriais e comerciais<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Sistemas el\u00e9tricos maiores em ambientes industriais e comerciais exigem disjuntores de maior capacidade para lidar com maquin\u00e1rio pesado e aplica\u00e7\u00f5es de alta tens\u00e3o. Esses tamanhos geralmente variam de 70 amps a 6000 amps.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Disjuntores de 100 a 225 amperes<\/strong> \u2013 Usado para grandes edif\u00edcios comerciais e equipamentos industriais.<\/li>\n\n\n\n<li><strong>Disjuntores de 400 a 600 amperes <\/strong>\u2013 Encontrado em f\u00e1bricas, data centers e opera\u00e7\u00f5es de alta pot\u00eancia.<\/li>\n\n\n\n<li><strong>Disjuntores de 1000 amp\u00e8res+ <\/strong>\u2013 Essencial para aplica\u00e7\u00f5es industriais pesadas, geralmente em sistemas multipain\u00e9is.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Industrial_Breaker_Sizes_by_Application\"><\/span>Industrial Breaker Sizes by Application<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Breaker Size Range<\/th><th>Typical Environment<\/th><th>Uso comum<\/th><\/tr><\/thead><tbody><tr><td>100A\u2013225A<\/td><td>Edif\u00edcios comerciais<\/td><td>Distribution panels<\/td><\/tr><tr><td>400A\u2013600A<\/td><td>Factories, data centers<\/td><td>Main feeders<\/td><\/tr><tr><td>1000A+<\/td><td>Heavy industry<\/td><td>Main switchboards<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <title>Destaque do produto Hero<\/title>\n  <style>\n    .hero-card {\n      display: flex;\n      flex-wrap: wrap;\n      align-items: center;\n      background: #f7f8fa;\n      border-radius: 16px;\n      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\n      padding: 24px;\n      max-width: 900px;\n      margin: 40px auto;\n      font-family: Arial, sans-serif;\n      text-decoration: none;\n      color: inherit;\n      font-family: 'Poppins';\n    }\n\n    .hero-image {\n      width: 220px;\n      height: auto;\n      border-radius: 12px;\n      object-fit: cover;\n      flex-shrink: 0;\n    }\n\n    .hero-content {\n      padding-left: 24px;\n      flex: 1;\n      min-width: 260px;\n    }\n\n    .hero-title {\n      font-size: 1.6rem;\n      font-weight: bold;\n      margin-bottom: 12px;\n      color: #222;\n      font-family: 'Poppins';\n    }\n\n    .hero-description {\n      font-size: 1rem;\n      color: #555;\n      margin-bottom: 18px;\n    }\n\n    .hero-link {\n      display: inline-block;\n      padding: 10px 20px;\n      background-color: #0066cc;\n      color: #fff;\n      text-decoration: none;\n      border-radius: 8px;\n      font-weight: bold;\n      transition: background 0.2s ease-in-out;\n    }\n\n    .hero-link:hover {\n      background-color: #004c99;\n    }\n\n    @media (max-width: 640px) {\n      .hero-card {\n        flex-direction: column;\n        text-align: center;\n      }\n\n      .hero-content {\n        padding-left: 0;\n        padding-top: 20px;\n      }\n\n      .hero-image {\n        width: 100%;\n        max-width: 280px;\n      }\n    }\n  <\/style>\n<\/head>\n<body>\n\n<a class=\"hero-card\" href=\"https:\/\/www.tosunlux.eu\/pt\/products\/mp-motor-protection-circuit-breaker-mp2\/\" target=\"_blank\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/MP1.jpg\" alt=\"Disjuntor de prote\u00e7\u00e3o de motor MP2 da TOSUNlux\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">Disjuntor de prote\u00e7\u00e3o do motor MP<\/div>\n    <div class=\"hero-description\">O disjuntor de prote\u00e7\u00e3o de motores da s\u00e9rie MP2 oferece prote\u00e7\u00e3o confi\u00e1vel contra sobrecarga e curto-circuito para motores. \u00c9 ideal para circuitos CA de 50\/60 Hz, garantindo a seguran\u00e7a e a efici\u00eancia dos seus sistemas acionados por motor.<\/div>\n    <span class=\"hero-link\">Ver produto<\/span>\n  <\/div>\n<\/a>\n\n<\/body>\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Breaker_Frame_Sizes_and_Their_Importance\"><\/span><strong>Tamanhos de quadros de disjuntores e sua import\u00e2ncia<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os disjuntores s\u00e3o alojados em estruturas de prote\u00e7\u00e3o, que determinam o tamanho f\u00edsico do disjuntor e a capacidade de interrup\u00e7\u00e3o de amperes (AIC) \u2014 a corrente de falha m\u00e1xima que ele pode suportar com seguran\u00e7a.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/www.tosunlux.eu\/pt\/category\/mcb\/\">Disjuntores em miniatura <\/a>(MCB)<\/strong> \u2013 Encontrado em resid\u00eancias e pequenos escrit\u00f3rios, geralmente suportando at\u00e9 125 amperes.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.tosunlux.eu\/pt\/category\/mccb\/#mainbox\">Disjuntores em caixa moldada <\/a>(MCCBs) \u2013<\/strong> Comum em ambientes comerciais e industriais, variando de 100 a 2500 amperes.<\/li>\n\n\n\n<li><strong>Disjuntores de ar (ACBs)<\/strong>) \u2013 Usado para aplica\u00e7\u00f5es industriais de alta tens\u00e3o, suportando mais de 6000 amperes.<\/li>\n<\/ul>\n\n\n\n<p>O menor tamanho de disjuntor padr\u00e3o normalmente \u00e9 um disjuntor miniatura (MCB) de 15 A, mas algumas aplica\u00e7\u00f5es especiais podem usar disjuntores ainda menores para circuitos de baixa pot\u00eancia.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Breaker_Type_vs_Frame_Size\"><\/span>Breaker Type vs Frame Size<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Tipo de disjuntor<\/th><th>Typical Amp Range<\/th><th>Aplica\u00e7\u00e3o t\u00edpica<\/th><\/tr><\/thead><tbody><tr><td>MCB<\/td><td>1A\u2013125A<\/td><td>Residential, light commercial<\/td><\/tr><tr><td>MCCB<\/td><td>100A\u20132500A<\/td><td>Comercial, industrial<\/td><\/tr><tr><td>ACB<\/td><td>630A\u20136300A+<\/td><td>Main distribution systems<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Choosing_the_Right_Circuit_Breaker_Size\"><\/span><strong>Escolhendo o tamanho certo do disjuntor<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large\"><img decoding=\"async\" width=\"1024\" height=\"681\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2023\/05\/electrical-panel-electric-meter-circuit-breakers-electric-frequency-converter-motor-speed-controller-rework-station-1024x681.jpg\" alt=\"Painel el\u00e9trico, medidor el\u00e9trico e disjuntores. Conversor de frequ\u00eancia el\u00e9trico, controlador de velocidade do motor, esta\u00e7\u00e3o de retrabalho.\" class=\"wp-image-6689\" srcset=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2023\/05\/electrical-panel-electric-meter-circuit-breakers-electric-frequency-converter-motor-speed-controller-rework-station-1024x681.jpg 1024w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2023\/05\/electrical-panel-electric-meter-circuit-breakers-electric-frequency-converter-motor-speed-controller-rework-station-300x200.jpg 300w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2023\/05\/electrical-panel-electric-meter-circuit-breakers-electric-frequency-converter-motor-speed-controller-rework-station-768x511.jpg 768w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2023\/05\/electrical-panel-electric-meter-circuit-breakers-electric-frequency-converter-motor-speed-controller-rework-station-1536x1022.jpg 1536w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2023\/05\/electrical-panel-electric-meter-circuit-breakers-electric-frequency-converter-motor-speed-controller-rework-station-2048x1363.jpg 2048w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2023\/05\/electrical-panel-electric-meter-circuit-breakers-electric-frequency-converter-motor-speed-controller-rework-station-18x12.jpg 18w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p>Selecionar o tamanho correto do ampere do disjuntor depende dos requisitos de carga el\u00e9trica e das regulamenta\u00e7\u00f5es de seguran\u00e7a. Aqui est\u00e3o os principais fatores a serem considerados:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>&nbsp;C\u00e1lculo de carga \u2013<\/strong> Determine a pot\u00eancia total de todos os dispositivos conectados para selecionar a classifica\u00e7\u00e3o de amperes apropriada.&nbsp;<\/li>\n\n\n\n<li><strong>Conformidade com o C\u00f3digo El\u00e9trico Nacional (NEC) <\/strong>\u2013 Certifique-se de que o tamanho do disjuntor atenda aos requisitos da NEC para aplica\u00e7\u00f5es espec\u00edficas.&nbsp;<\/li>\n\n\n\n<li><strong>Classifica\u00e7\u00e3o de tens\u00e3o <\/strong>\u2013 Combine o tamanho do disjuntor com a voltagem do seu sistema, seja 120 V, 240 V ou superior.&nbsp;<\/li>\n\n\n\n<li><strong>Tipo de disjuntor <\/strong>\u2013 Escolha MCBs, MCCBs e disjuntores especiais dependendo do ambiente de instala\u00e7\u00e3o.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Breaker_Sizing_Mistakes\"><\/span>Common Breaker Sizing Mistakes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Based on project feedback, common mistakes include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Choosing amp rating without checking <strong>frame size<\/strong><\/li>\n\n\n\n<li>Ignorando <strong>ambient temperature<\/strong> derating<\/li>\n\n\n\n<li>Using residential MCBs in industrial panels<\/li>\n\n\n\n<li>Oversizing breakers to avoid nuisance tripping<\/li>\n<\/ul>\n\n\n\n<p>These errors often lead to <strong>reduced protection<\/strong>, not better performance.<\/p>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  \n  <title>Destaque do produto Hero<\/title>\n  <style>\n    .hero-card {\n      display: flex;\n      flex-wrap: wrap;\n      align-items: center;\n      background: #f7f8fa;\n      border-radius: 16px;\n      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\n      padding: 24px;\n      max-width: 900px;\n      margin: 40px auto;\n      font-family: Arial, sans-serif;\n      text-decoration: none;\n      color: inherit;\n font-family: 'Poppins';\n    }\n\n    .hero-image {\n      width: 220px;\n      height: auto;\n      border-radius: 12px;\n      object-fit: cover;\n      flex-shrink: 0;\n    }\n\n    .hero-content {\n      padding-left: 24px;\n      flex: 1;\n      min-width: 260px;\n    }\n\n    .hero-title {\n      font-size: 1.6rem;\n      font-weight: bold;\n      margin-bottom: 12px;\n      color: #222;\n      font-family: 'Poppins',\n    }\n\n    .hero-description {\n      font-size: 1rem;\n      color: #555;\n      margin-bottom: 18px;\n    }\n\n    .hero-link {\n      display: inline-block;\n      padding: 10px 20px;\n      background-color: #0066cc;\n      color: #fff;\n      text-decoration: none;\n      border-radius: 8px;\n      font-weight: bold;\n      transition: background 0.2s ease-in-out;\n    }\n\n    .hero-link:hover {\n      background-color: #004c99;\n    }\n\n    @media (max-width: 640px) {\n      .hero-card {\n        flex-direction: column;\n        text-align: center;\n      }\n\n      .hero-content {\n        padding-left: 0;\n        padding-top: 20px;\n      }\n\n      .hero-image {\n        width: 100%;\n        max-width: 280px;\n      }\n    }\n  <\/style>\n<\/head>\n<body>\n\n<a class=\"hero-card\" href=\"https:\/\/www.tosunlux.eu\/pt\/product\/\" target=\"_blank\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/bunny-wp-pullzone-8eh7ulciaa.b-cdn.net\/wp-content\/uploads\/2024\/06\/DSC08160_%E5%89%AF%E6%9C%AC-1-1.webp\" alt=\"atacadista de suprimentos el\u00e9tricos\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">atacadista de suprimentos el\u00e9tricos<\/div>\n    <div class=\"hero-description\">Descubra uma linha completa de produtos el\u00e9tricos de um atacadista de suprimentos el\u00e9tricos confi\u00e1vel. A TOSUNlux oferece disjuntores, contatores, interruptores e muito mais para mercados globais.<\/div>\n    <span class=\"hero-link\">Ver produto<\/span>\n  <\/div>\n<\/a>\n\n<\/body>\n<\/html>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span><strong>Perguntas frequentes<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_What_is_the_smallest_standard_circuit_breaker_size\"><\/span><strong>1. Qual \u00e9 o menor tamanho de disjuntor padr\u00e3o?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>O menor tamanho de disjuntor padr\u00e3o \u00e9 de 15 amperes, normalmente usado para ilumina\u00e7\u00e3o e tomadas el\u00e9tricas padr\u00e3o em edif\u00edcios residenciais.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_What_size_breaker_is_used_for_a_220V_circuit\"><\/span><strong>2. Qual tamanho de disjuntor \u00e9 usado para um circuito de 220 V?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>O tamanho de um disjuntor de 220 V varia de 20 amps a 60 amps, dependendo do aparelho conectado. Usos comuns incluem secadoras (30 A), fornos (40 A) e condicionadores de ar (50 A).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_What_is_the_difference_between_breaker_frame_sizes_and_amp_ratings\"><\/span><strong>3. Qual \u00e9 a diferen\u00e7a entre os tamanhos da estrutura do disjuntor e as classifica\u00e7\u00f5es de amperes?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>O tamanho da estrutura do disjuntor se refere ao tamanho f\u00edsico e \u00e0 capacidade do disjuntor, enquanto a classifica\u00e7\u00e3o de amperagem determina quanta corrente ele pode suportar com seguran\u00e7a antes de desarmar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"About_the_Data_and_Experience\"><\/span>About the Data and Experience<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>This guide is based on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IEC and NEC sizing principles<\/li>\n\n\n\n<li>Product documentation from global manufacturers<\/li>\n\n\n\n<li>Selection experience across residential, commercial, and industrial projects<\/li>\n<\/ul>\n\n\n\n<p>The goal is <strong>practical selection guidance<\/strong>, not brand promotion.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>Conclus\u00e3o<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Entender os tamanhos padr\u00e3o de disjuntores \u00e9 essencial para manter a seguran\u00e7a e a efici\u00eancia el\u00e9trica. N\u00e3o importa se voc\u00ea precisa de um disjuntor de 15 amp para um circuito residencial ou de um disjuntor industrial de 600 amp, escolher o tamanho certo garante distribui\u00e7\u00e3o de energia confi\u00e1vel e prote\u00e7\u00e3o contra riscos el\u00e9tricos.<\/p>\n\n\n\n<p>Como l\u00edder confi\u00e1vel no setor, <strong>TOSUNlux, an <a href=\"https:\/\/www.tosunlux.eu\/pt\/solution-for-electrical-distributors\/\" target=\"_blank\" rel=\"noreferrer noopener\">electrical circuit breaker manufacturer<\/a><\/strong>, fornece solu\u00e7\u00f5es de alta qualidade adaptadas para aplica\u00e7\u00f5es residenciais e industriais. Para mais detalhes sobre como selecionar o melhor disjuntor para suas necessidades, confira nosso guia sobre<a href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/what-type-of-circuit-breaker-do-i-need\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Que tipo de disjuntor eu preciso?<\/strong><\/a>.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resources\"><\/span><strong>Recursos<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.esfi.org\/workplace-safety\/industry-codes-regulations\/the-national-electrical-code-nec\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Diretrizes do C\u00f3digo El\u00e9trico Nacional (NEC)<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.esfi.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Funda\u00e7\u00e3o Internacional de Seguran\u00e7a El\u00e9trica (ESFI)<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.circuitbreakerwholesale.com\/blogs\/circuit-breakers\/what-are-the-common-sizes-of-circuit-breakers\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Quais s\u00e3o os tamanhos comuns de disjuntores?<\/a><\/li>\n<\/ul>\n\n\n\n<div style=\"margin-top: 50px;\">\n  <h3 style=\"font-size: 22px; font-weight: bold; color: #003366; margin-bottom: 20px;\"><span class=\"ez-toc-section\" id=\"%F0%9F%94%8E_Recommended_Reading_for_Circuit_Breaker_Sizes\"><\/span>\ud83d\udd0e Leitura recomendada para tamanhos de disjuntores<span class=\"ez-toc-section-end\"><\/span><\/h3>\n  <div style=\"display: flex; flex-wrap: wrap; gap: 20px;\">\n\n    <!-- \u5361\u72471\uff1aStandard Sizes of Circuit Breakers -->\n    <div style=\"flex: 1 1 30%; background-color: #f0f6fc; padding: 20px; border-left: 4px solid #003366; border-radius: 8px;\">\n      <h4 style=\"font-size: 16px; font-weight: bold; color: #003366; margin-bottom: 8px;\"><span class=\"ez-toc-section\" id=\"Standard_Sizes_of_Circuit_Breakers\"><\/span>\n        <a href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/standard-sizes-of-circuit-breakers\/\" style=\"text-decoration: none; color: #003366;\">\n          Tamanhos padr\u00e3o de disjuntores\n        <\/a>\n      <span class=\"ez-toc-section-end\"><\/span><\/h4>\n      <p style=\"font-size: 14px; color: #333;\">\n        Entenda as classifica\u00e7\u00f5es de corrente comuns e os tamanhos de estrutura dos disjuntores usados em sistemas residenciais, comerciais e industriais.\n      <\/p>\n    <\/div>\n\n    <!-- \u5361\u72472\uff1aBreaking Capacity vs Circuit Breaker Ratings -->\n    <div style=\"flex: 1 1 30%; background-color: #f0f6fc; padding: 20px; border-left: 4px solid #003366; border-radius: 8px;\">\n      <h4 style=\"font-size: 16px; font-weight: bold; color: #003366; margin-bottom: 8px;\"><span class=\"ez-toc-section\" id=\"Breaking_Capacity_vs_Circuit_Breaker_Ratings\"><\/span>\n        <a href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/breaking-capacity-vs-circuit-breaker-ratings\/\" style=\"text-decoration: none; color: #003366;\">\n          Capacidade de interrup\u00e7\u00e3o vs. classifica\u00e7\u00f5es de disjuntores\n        <\/a>\n      <span class=\"ez-toc-section-end\"><\/span><\/h4>\n      <p style=\"font-size: 14px; color: #333;\">\n        Aprenda a interpretar a capacidade de interrup\u00e7\u00e3o e as classifica\u00e7\u00f5es de corrente ao selecionar disjuntores para diferentes aplica\u00e7\u00f5es.\n      <\/p>\n    <\/div>\n\n    <!-- \u5361\u72473\uff1aWhat Type of Circuit Breaker Do I Need? -->\n    <div style=\"flex: 1 1 30%; background-color: #f0f6fc; padding: 20px; border-left: 4px solid #003366; border-radius: 8px;\">\n      <h4 style=\"font-size: 16px; font-weight: bold; color: #003366; margin-bottom: 8px;\"><span class=\"ez-toc-section\" id=\"What_Type_of_Circuit_Breaker_Do_I_Need\"><\/span>\n        <a href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/what-type-of-circuit-breaker-do-i-need\/\" style=\"text-decoration: none; color: #003366;\">\n          Que tipo de disjuntor eu preciso?\n        <\/a>\n      <span class=\"ez-toc-section-end\"><\/span><\/h4>\n      <p style=\"font-size: 14px; color: #333;\">\n        Descubra como escolher o tipo e o tamanho certos de disjuntor com base na tens\u00e3o do seu sistema, na carga e nas necessidades de seguran\u00e7a.\n      <\/p>\n    <\/div>\n\n  <\/div>\n<\/div>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Circuit breakers come in different sizes based on their function and electrical capacity. The standard circuit breaker sizes refer to the various amp ratings designed to protect electrical systems from overloads and short circuits. These sizes vary depending on the voltage level, the type of application, and the equipment being powered. In this guide, we&#8217;ll break down circuit breaker amp sizes, breaker frame sizes, and common breaker sizes to help you understand how they work and which is best for your needs. Why Circuit Breaker Size Matters in Real Projects From our experience working with distributors and electrical contractors, circuit breaker sizing issues are one of the most common causes of system faults. A breaker that is too small will trip frequently.A breaker that is too large may fail to protect cables and equipment. That is why understanding standard sizes, not just amp numbers, is critical before selecting any circuit breaker. Common Circuit Breaker Amp Sizes 1. Residential Circuit Breakers Most homes use 120V and 240V circuit breakers designed to handle different power loads. The most common breaker sizes for residential applications include: Residential Breaker Sizes and Typical Loads Breaker Size Voltage Typical Application 15A 120V Lighting, wall outlets 20A 120V Kitchen, bathroom circuits 30A 240V Dryers, small AC units 40A\u201350A 240V Ovens, water heaters 60A 240V EV chargers, subpanels Hero Product Highlight TSM2 Moulded Case Circuit Breaker The TSM2 Moulded Case Circuit Breaker offers high performance for overload and short circuit protection, making it ideal for industrial and commercial applications. View Product 2. Industrial [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":12888,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[209],"tags":[],"class_list":["post-12793","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circuit-breaker"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Are the Standard Sizes of Circuit Breakers? | TOSUNlux<\/title>\n<meta name=\"description\" content=\"Find out the standard sizes of circuit breakers and how to choose the best fit with Tosunlux. 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