{"id":6653,"date":"2023-05-18T14:22:30","date_gmt":"2023-05-18T06:22:30","guid":{"rendered":"https:\/\/www.tosunlux.eu\/?p=6653"},"modified":"2023-05-18T14:36:35","modified_gmt":"2023-05-18T06:36:35","slug":"understanding-mcbs-and-their-importance-in-homes-and-industries","status":"publish","type":"post","link":"https:\/\/www.tosunlux.eu\/pt\/blog\/understanding-mcbs-and-their-importance-in-homes-and-industries\/","title":{"rendered":"O que \u00e9 um MCB e seu uso em uma casa?"},"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\/understanding-mcbs-and-their-importance-in-homes-and-industries\/#Typical_Uses_for_Domestic_MCBs\" title=\"Usos t\u00edpicos para MCBs dom\u00e9sticos\">Usos t\u00edpicos para MCBs dom\u00e9sticos<\/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\/understanding-mcbs-and-their-importance-in-homes-and-industries\/#There_are_five_uses_for_MCBs_that_you_may_not_be_aware_of\" title=\"Existem cinco usos para MCBs que voc\u00ea pode n\u00e3o conhecer.\">Existem cinco usos para MCBs que voc\u00ea pode n\u00e3o conhecer.<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Um disjuntor em miniatura \u00e9 um dispositivo eletromec\u00e2nico que protege um circuito el\u00e9trico contra superaquecimento. Um problema el\u00e9trico causado por uma sobrecarga ou um curto-circuito \u00e9 chamado de curto-circuito.<\/p>\n\n\n\n<p>Costum\u00e1vamos nos defender contra sobrecorrente com fio de fus\u00edvel (na verdade, costum\u00e1vamos vend\u00ea-lo!) Antigamente. O conceito era simples: uma sobrecorrente \u201cexplodiria\u201d fisicamente o fio do fus\u00edvel aquecendo-o e derretendo-o rapidamente.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.tosunlux.eu\/pt\/category\/power-distribution-system\/?s=circuit%20breaker\" target=\"_blank\" rel=\"noreferrer noopener\">MCBs<\/a> expanda essa funcionalidade por n\u00e3o ser destru\u00eddo durante uma sobrecorrente e, portanto, ser reutiliz\u00e1vel. Tamb\u00e9m \u00e9 consideravelmente mais f\u00e1cil de usar, com a simplicidade de &#039;ligar ou desligar&#039; o isolamento do circuito. Eles s\u00e3o muito mais seguros de usar e operar porque o condutor fica alojado dentro de um inv\u00f3lucro de pl\u00e1stico.<\/p>\n\n\n\n<p>Vale a pena notar que os MCBs n\u00e3o protegem as pessoas contra choques el\u00e9tricos gerados por &#039;vazamento \u00e0 terra&#039;. Os RCDs e os RCBOs s\u00e3o os dispositivos que realizam este servi\u00e7o.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.tosunlux.eu\/pt\/products\/tsb4-63-miniature-circuit-breaker\/\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB4-63-1P-2-1024x1024.jpg\" alt=\"\" class=\"wp-image-2768\" srcset=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB4-63-1P-2-1024x1024.jpg 1024w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB4-63-1P-2-300x300.jpg 300w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB4-63-1P-2-150x150.jpg 150w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB4-63-1P-2-768x768.jpg 768w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB4-63-1P-2-1536x1536.jpg 1536w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/TSB4-63-1P-2.jpg 1603w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Disjuntor Miniatura TSB4-63<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"https:\/\/www.tosunlux.eu\/pt\/products\/tsn3-32-miniature-circuit-breaker\/\"><img decoding=\"async\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSN3-32-1024x1024.jpg\" alt=\"TSN3-32\" class=\"wp-image-2310\" width=\"404\" height=\"404\" srcset=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSN3-32-1024x1024.jpg 1024w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSN3-32-300x300.jpg 300w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSN3-32-150x150.jpg 150w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSN3-32-768x768.jpg 768w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSN3-32-1536x1536.jpg 1536w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/05\/TSN3-32.jpg 1600w\" sizes=\"(max-width: 404px) 100vw, 404px\" \/><\/a><figcaption>Disjuntor Miniatura TSN3-32<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><strong>Kilo Amperes, Amperes e Tripping Curve s\u00e3o as tr\u00eas principais caracter\u00edsticas de um MCB.<\/strong><\/p>\n\n\n\n<p><strong>Nominais de Corrente de Sobrecarga - Amperes (A)<\/strong><\/p>\n\n\n\n<p>Quando muitos aparelhos s\u00e3o conectados a um \u00fanico circuito, eles usam mais corrente el\u00e9trica do que o circuito e o cabo foram projetados para suportar. Pode acontecer na cozinha se a chaleira, lava-lou\u00e7as, fog\u00e3o el\u00e9trico, micro-ondas e liquidificador forem usados simultaneamente. O MCB neste circuito corta a eletricidade, evitando que o cabo e os terminais superaque\u00e7am e peguem fogo.<\/p>\n\n\n\n<p><strong>Kilo Amp\u00e8res - Classifica\u00e7\u00e3o de Curto-Circuito (kA)<\/strong><\/p>\n\n\n\n<p>Os curtos-circuitos s\u00e3o causados por uma falha em um circuito ou aparelho el\u00e9trico e podem ser ainda mais prejudiciais do que as sobrecargas, pois a escala e a velocidade da sobrecorrente est\u00e3o em uma escala diferente. Quando os condutores ativo e neutro s\u00e3o conectados diretamente, isso acontece. A corrente el\u00e9trica percorre o circuito em um loop sem a resist\u00eancia fornecida pela integridade regular do circuito, multiplicando a amperagem por milhares de vezes em momentos.<\/p>\n\n\n\n<p>Devido \u00e0 liga\u00e7\u00e3o entre a tens\u00e3o padr\u00e3o (240 V) e as classifica\u00e7\u00f5es de energia t\u00edpicas de aparelhos residenciais, a sobrecorrente de curto-circuito n\u00e3o deve exceder 6.000 amperes. No entanto, ao empregar 415v e equipamentos grandes em ambientes comerciais e industriais, s\u00e3o necess\u00e1rios MCBs com classifica\u00e7\u00e3o de 10kA. A corrente de falha mais prov\u00e1vel que o MCB pode suportar enquanto ainda desconecta o circuito \u00e9 mostrada por essas classifica\u00e7\u00f5es.<\/p>\n\n\n\n<p><strong>Curva de disparo<\/strong><\/p>\n\n\n\n<p>A &#039;curva de disparo&#039; de um MCB permite surtos de energia do mundo real e, \u00e0s vezes, necess\u00e1rios. Para superar a in\u00e9rcia de grandes motores em aplica\u00e7\u00f5es comerciais, grandes m\u00e1quinas geralmente requerem uma explos\u00e3o inicial de energia sobre sua corrente m\u00e9dia de trabalho. O MCB permite esse pequeno pico, que dura apenas alguns segundos porque \u00e9 seguro faz\u00ea-lo por um per\u00edodo t\u00e3o curto.<\/p>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"Typical_Uses_for_Domestic_MCBs\"><\/span><strong>Usos t\u00edpicos para MCBs dom\u00e9sticos<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Embora cada instala\u00e7\u00e3o seja \u00fanica e sempre deva ser planejada por um eletricista profissional totalmente licenciado no local, a maioria dos esquemas de fia\u00e7\u00e3o dom\u00e9stica segue as seguintes diretrizes:<\/p>\n\n\n\n<p>Circuitos de ilumina\u00e7\u00e3o classificados em seis amperes<\/p>\n\n\n\n<p>Grandes circuitos de ilumina\u00e7\u00e3o classificados em dez amperes, embora estejam se tornando menos comuns em ambientes dom\u00e9sticos, \u00e0 medida que a tecnologia e as tend\u00eancias mudam para fontes de ilumina\u00e7\u00e3o de baixa energia, como LEDs.<\/p>\n\n\n\n<p>Ambos 16 amp e 20 amp s\u00e3o freq\u00fcentemente usados para aquecedores de imers\u00e3o e caldeiras, dependendo da pot\u00eancia nominal.<\/p>\n\n\n\n<p>Ring Final \u2013 32 Amp O circuito de energia \u00e9 referido como \u201ctomadas\u201d em termos t\u00e9cnicos.<\/p>\n\n\n\n<p>Fog\u00f5es, fog\u00f5es el\u00e9tricos e pequenos chuveiros requerem 40 amperes.<\/p>\n\n\n\n<p>Chuveiros e ofur\u00f4s el\u00e9tricos com alimenta\u00e7\u00e3o de 50 amp \u2013 10 kW.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-embed-handler wp-block-embed-embed-handler wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Tipos de MCB e suas aplica\u00e7\u00f5es || Tipos de MCB\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/JmHBOO1Y63k?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"There_are_five_uses_for_MCBs_that_you_may_not_be_aware_of\"><\/span><strong>Existem cinco usos para MCBs que voc\u00ea pode n\u00e3o conhecer.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Um sistema el\u00e9trico bem estabelecido \u00e9 uma das necessidades mais cruciais para o funcionamento eficaz de sua casa, f\u00e1brica ou local de trabalho. Cada equipamento e maquin\u00e1rio dom\u00e9stico consome uma quantidade significativa de energia, exigindo precau\u00e7\u00f5es de seguran\u00e7a ao usar eletricidade. Picos de energia podem causar mudan\u00e7as de tens\u00e3o que s\u00e3o extremamente prejudiciais e perigosas.<\/p>\n\n\n\n<p>Os disjuntores miniatura s\u00e3o pequenos dispositivos que atuam como agentes de controle em caso de falta de energia. Ao detectar uma sobrecarga ou pico de energia, este dispositivo desliga o sistema el\u00e9trico. V\u00e1rias variedades de MCBs podem ser usadas em suas resid\u00eancias e empresas, dependendo da natureza das aplica\u00e7\u00f5es el\u00e9tricas. Os disjuntores em miniatura s\u00e3o ideais para resid\u00eancias e edif\u00edcios com infraestrutura el\u00e9trica limitada. Aqui est\u00e3o algumas aplica\u00e7\u00f5es para MCBs que voc\u00ea pode n\u00e3o ter considerado.<\/p>\n\n\n\n<p><strong>1. Pain\u00e9is el\u00e9tricos em casa<\/strong><\/p>\n\n\n\n<p>Para proteger resid\u00eancias contra sobrecarga, s\u00e3o utilizados disjuntores miniatura. Eles s\u00e3o mais confi\u00e1veis e seguros do que os fus\u00edveis devido \u00e0 sua capacidade de gerenciar grandes quantidades de eletricidade. Uma das vantagens mais significativas de um MCB \u00e9 que ele garante que a energia el\u00e9trica seja distribu\u00edda uniformemente por todos os dispositivos.&nbsp;<\/p>\n\n\n\n<p><strong>2. Luzes<\/strong><\/p>\n\n\n\n<p>Cada casa tem um sistema de ilumina\u00e7\u00e3o sofisticado. Isso pode ajudar na distribui\u00e7\u00e3o eficiente de eletricidade em todos os sistemas de ilumina\u00e7\u00e3o da casa. Em compara\u00e7\u00e3o com as l\u00e2mpadas comuns, as l\u00e2mpadas fluorescentes, por exemplo, consomem muita eletricidade para funcionar. Os MCBs v\u00eam em socorro nessa situa\u00e7\u00e3o. Os MCBs tamb\u00e9m auxiliam na manuten\u00e7\u00e3o da qualidade e seguran\u00e7a das l\u00e2mpadas.<\/p>\n\n\n\n<p><strong>3. Aplica\u00e7\u00f5es na Ind\u00fastria<\/strong><\/p>\n\n\n\n<p>Em empresas de pequeno e grande porte, os disjuntores miniatura podem ser mecanismos de seguran\u00e7a adequados. Em um mundo ideal, a maioria dos equipamentos industriais exigiria uma fonte de alimenta\u00e7\u00e3o de at\u00e9 30 kA. Nesse caso, \u00e9 necess\u00e1rio substituir fus\u00edveis antigos por MCBs. Os MCBs desempenham uma fun\u00e7\u00e3o cr\u00edtica em instala\u00e7\u00f5es comerciais, garantindo a efici\u00eancia de aplica\u00e7\u00f5es e instala\u00e7\u00f5es otimizando o fluxo de energia. Hot\u00e9is, supermercados e padarias fazem uso deles.<\/p>\n\n\n\n<p><strong>4. Aquecedores<\/strong><\/p>\n\n\n\n<p>Os MCBs s\u00e3o uma op\u00e7\u00e3o de seguran\u00e7a confi\u00e1vel, especialmente se voc\u00ea tiver aquecedores instalados em sua casa ou escrit\u00f3rio. Os aquecedores, em geral, s\u00e3o propensos a oscila\u00e7\u00f5es excessivas de tens\u00e3o, uma vez que consomem uma grande quantidade de eletricidade da rede el\u00e9trica. Essas inst\u00e2ncias podem ser evitadas com a instala\u00e7\u00e3o adequada de um pequeno disjuntor. Disjuntores em miniatura v\u00eam em v\u00e1rios formatos e tamanhos, cada um capaz de lidar com uma carga de energia espec\u00edfica.<\/p>\n\n\n\n<p><strong>5. Mecanismo de disparo de falha de aterramento<\/strong><\/p>\n\n\n\n<p>Quando o fio energizado toca uma superf\u00edcie transmissora que n\u00e3o faz parte do sistema de circuito, ocorre uma falha de aterramento. Quando h\u00e1 uma falha no circuito, a taxa de fluxo de corrente aumenta. Um MCB inicia seu mecanismo de disparo magn\u00e9tico e retifica o sistema de circuito neste ponto.<\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda sobre os recursos dos MCBs, incluindo classifica\u00e7\u00f5es de corrente de sobrecarga, classifica\u00e7\u00f5es de curto-circuito em kilo amperes e curvas de disparo. <\/p>","protected":false},"author":1,"featured_media":6648,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-6653","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Understanding MCBs and their Importance in Homes and Industries<\/title>\n<meta name=\"description\" content=\"Discover the importance of miniature circuit breakers (MCBs) in protecting 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