{"id":11892,"date":"2023-08-27T22:48:13","date_gmt":"2023-08-27T14:48:13","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=11892"},"modified":"2025-07-07T10:27:09","modified_gmt":"2025-07-07T02:27:09","slug":"circuit-breaker-types-everything-you-need-to-know","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/pt\/circuit-breaker-types-everything-you-need-to-know\/","title":{"rendered":"Tipos de disjuntores: Tudo o que voc\u00ea precisa saber"},"content":{"rendered":"
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Voc\u00ea j\u00e1 prestou aten\u00e7\u00e3o na caixa de distribui\u00e7\u00e3o de sua casa? Se tiver a oportunidade de abrir a porta da caixa de distribui\u00e7\u00e3o, encontrar\u00e1 muitos componentes cuidadosamente montados no trilho DIN. Voc\u00ea sabe o que eles s\u00e3o? Na verdade, esses componentes s\u00e3o chamados de disjuntores, ou voc\u00ea pode simplesmente cham\u00e1-los de interruptores que t\u00eam um efeito protetor sobre os usu\u00e1rios. Surge uma nova pergunta: Quantos tipos de disjuntores existem? Como eles funcionam? Neste artigo, voc\u00ea encontrar\u00e1 as respostas. Agora, vamos come\u00e7ar a aprender mais.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Componentes\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Tipos de disjuntores<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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H\u00e1 10 tipos de disjuntores de acordo com sua capacidade de carga e m\u00e9todos de prote\u00e7\u00e3o, a saber: MCB, MCCB, ACB, RCCB, RCBO, ELCB, AFCI, GFCI, VCB e MPCB. Essas s\u00e3o abrevia\u00e7\u00f5es. Nos pr\u00f3ximos cap\u00edtulos, explicaremos cada produto em detalhes.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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O que \u00e9 MCB?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Foto\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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MCB \u00e9 a abrevia\u00e7\u00e3o de Miniature Circuit Breaker (Disjuntor em miniatura), que \u00e9 um produto essencial usado para proteger resid\u00eancias ou dispositivos contra falhas de sobrecorrente e curto-circuito. Quando ocorrem falhas de sobrecorrente e curto-circuito, ele corta automaticamente o fornecimento de energia para a resid\u00eancia ou o dispositivo. A energia s\u00f3 pode ser restaurada depois que esses dois problemas forem resolvidos. Normalmente, ele \u00e9 adequado para resid\u00eancias ou pequenos dispositivos com corrente inferior a 100 amp\u00e8res.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Estrutura\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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De acordo com as diferentes correntes de disparo, os pequenos disjuntores podem ser divididos em <\/span>Tipos B, C, D, K e Z<\/span><\/a><\/span>. Entre eles, os tipos B e C s\u00e3o mais comumente usados. Os disjuntores do tipo B podem disparar de 2 a 3 vezes a corrente nominal e s\u00e3o adequados para ilumina\u00e7\u00e3o dom\u00e9stica. Os disjuntores do tipo C podem disparar de 5 a 10 vezes a corrente nominal e s\u00e3o adequados para cargas indutivas, como motores.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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<\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Mas se minha carga for superior a 100 amperes e eu quiser atingir a mesma fun\u00e7\u00e3o, que produto devo usar? A resposta \u00e9 usar um disjuntor em caixa moldada (MCCB). Ent\u00e3o, o que \u00e9 um disjuntor em caixa moldada? Responderemos a voc\u00ea a seguir.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Explica\u00e7\u00e3o do MCCB<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Disjuntor\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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MCCB \u00e9 a abrevia\u00e7\u00e3o de Molded Case Circuit Breaker (disjuntor em caixa moldada) e tem uma corrente m\u00e1xima de at\u00e9 2500 amperes e desempenha a mesma fun\u00e7\u00e3o que o MCB para proteger o equipamento contra sobrecorrente e curto-circuito. Esse produto foi projetado para aplica\u00e7\u00f5es de m\u00e9dia a alta pot\u00eancia. Ele tem uma caixa maior, maior capacidade de interrup\u00e7\u00e3o e configura\u00e7\u00f5es ajust\u00e1veis.<\/span><\/p>

Como o MCCB pode lidar com uma corrente m\u00e1xima de 2500 amp\u00e8res, o que devemos fazer se a corrente exigida por uma \u00e1rea industrial exceder esse valor? O ACB apresentado abaixo \u00e9 sua melhor op\u00e7\u00e3o.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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O que \u00e9 ACB?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Disjuntor\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Os ACBs s\u00e3o disjuntores de ar projetados para cargas m\u00e1ximas de 600 amperes a 6300 amperes e t\u00eam uma tens\u00e3o operacional de at\u00e9 690 V, enquanto os MCCBs t\u00eam uma tens\u00e3o operacional m\u00e1xima de apenas 415 V. Portanto, se voc\u00ea for o gerente de uma \u00e1rea ou propriedade industrial, os ACBs podem proteger v\u00e1rias resid\u00eancias e empresas.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Explica\u00e7\u00e3o da RCCB<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Diferentemente do MCB, MCCB e ACB, o RCCB monitora a diferen\u00e7a de corrente entre o fio energizado e o fio neutro. Se a corrente entre os dois estiver desequilibrada (ou seja, houver fuga), o RCCB cortar\u00e1 o circuito em um curto espa\u00e7o de tempo para garantir a seguran\u00e7a do pessoal e dos equipamentos.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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O que \u00e9 RCBO?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Outro componente importante no processo de consumo de energia \u00e9 o RCBO, que \u00e9 um disjuntor de corrente residual (RCBO) com fun\u00e7\u00e3o de prote\u00e7\u00e3o contra sobrecorrente. Ao contr\u00e1rio do MCB, MCCB e ACB, o RCBO n\u00e3o s\u00f3 tem fun\u00e7\u00f5es de prote\u00e7\u00e3o contra sobrecorrente e curto-circuito, mas tamb\u00e9m tem fun\u00e7\u00e3o de prote\u00e7\u00e3o contra desequil\u00edbrio de corrente (corrente residual). Voc\u00ea pode simplesmente entender que o RCBO combina o MCB e o RCCB em um s\u00f3.<\/span><\/p>

A principal diferen\u00e7a entre MCB, MCCB, ABC e RCBO \u00e9 a seguinte: Os primeiros s\u00e3o usados principalmente para detectar falhas de sobrecarga e curto-circuito do pr\u00f3prio circuito, e n\u00e3o podem detectar e proteger contra riscos de choque el\u00e9trico causados por vazamento. O segundo tem uma faixa de prote\u00e7\u00e3o mais ampla, al\u00e9m de proteger os circuitos e a seguran\u00e7a do pessoal e evitar acidentes com choque el\u00e9trico causados por vazamento.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Explica\u00e7\u00e3o da ELCB<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Diagrama\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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ELCB \u00e9 a abrevia\u00e7\u00e3o de disjuntor de corrente residual. Sua fun\u00e7\u00e3o \u00e9 a mesma do RCCB, que \u00e9 usado para detectar se h\u00e1 vazamento no circuito.\u00a0<\/span><\/p>

No entanto, tamb\u00e9m h\u00e1 diferen\u00e7as entre eles. A ELCB determina se h\u00e1 vazamento por <\/span>Monitoramento da corrente no fio terra<\/b>. Quando a corrente de fuga exceder o valor definido, o circuito ser\u00e1 interrompido para evitar acidentes com choque el\u00e9trico. RCCB <\/span>compara a corrente no fio energizado e no fio neutro<\/b>. Se a corrente estiver desequilibrada (ou seja, houver vazamento), ele cortar\u00e1 imediatamente o circuito para proteger o pessoal e o equipamento.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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O que \u00e9 AFCI e GFCI?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Tomadas\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Os interruptores de circuito de falha de arco (AFCI) tamb\u00e9m s\u00e3o chamados de Arc Fault Circuit Interrupters (AFCI), e GFCI significa Ground Fault Circuit Interrupter (interruptor de circuito de falha de aterramento). O AFCI e o GFCI s\u00e3o os produtos de prote\u00e7\u00e3o contra inc\u00eandios e choques mais comumente usados nos Estados Unidos, principalmente integrados \u00e0s tomadas el\u00e9tricas. No entanto, devido ao seu custo mais elevado, esses dois produtos n\u00e3o s\u00e3o t\u00e3o amplamente utilizados quanto os disjuntores em miniatura (MCBs).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Explica\u00e7\u00e3o do VCB<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Disjuntor\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Um disjuntor a v\u00e1cuo (VCB) usa o v\u00e1cuo como meio de extin\u00e7\u00e3o de arco. Semelhante a um disjuntor a ar (ACB), ele tamb\u00e9m protege os sistemas de energia, mas os VCBs podem suportar tens\u00f5es de 11kV a 33kV. Um disjuntor a ar (ACB) depende do ar para a extin\u00e7\u00e3o e o isolamento do arco e pode suportar tens\u00f5es abaixo de 690 V.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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O que \u00e9 MPCB?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Foto\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Um disjuntor de prote\u00e7\u00e3o do motor (MPCB) \u00e9 um dispositivo de prote\u00e7\u00e3o el\u00e9trica especializado projetado para proteger os motores e os circuitos associados contra sobrecorrente e outras falhas el\u00e9tricas. Ele combina a funcionalidade de um disjuntor e de um protetor de motor em um \u00fanico dispositivo.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Conclus\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Em resumo, h\u00e1 10 tipos diferentes de disjuntores: MCB, MCCB, ACB, RCCB, RCBO, ELCB, AFCI, GFCI, VCB e MPCB. Cada um tem suas pr\u00f3prias vantagens e fun\u00e7\u00f5es e pode oferecer prote\u00e7\u00e3o diferente para diferentes cen\u00e1rios de aplica\u00e7\u00e3o.\u00a0<\/span><\/p>

Se voc\u00ea tiver outras d\u00favidas sobre os tipos de disjuntores ou se tiver um projeto para comunicar, envie um e-mail para <\/span>shonxu@lorentzzi.com<\/span><\/span><\/a> para entrar em contato conosco. <\/span>Lorentzzi<\/b><\/a><\/span>\u00a0A equipe de vendas responder\u00e1 dentro de 24 horas.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Have you ever paid attention to the distribution box in your home? If you have a chance to open the door of the distribution box, you will find many components neatly mounted on the DIN rail. Do you know what they are? Actually, these components are called circuit breakers, or you can simply call them […]<\/p>\n","protected":false},"author":1,"featured_media":11894,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","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 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[117],"tags":[],"class_list":["post-11892","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accessories"],"yoast_head":"\nCircuit Breaker Types: Everything You Need To Know<\/title>\n<meta name=\"description\" content=\"This blog will provide you a detailed explanation for circuit breaker types, you can find everything you want to know, click to view it now!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lorentzzi.com\/pt\/circuit-breaker-types-everything-you-need-to-know\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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