{"id":19128,"date":"2025-08-11T21:15:26","date_gmt":"2025-08-11T13:15:26","guid":{"rendered":"https:\/\/viox.com\/?p=19128"},"modified":"2026-03-17T23:06:02","modified_gmt":"2026-03-17T15:06:02","slug":"mccb-full-form-molded-case-circuit-breaker","status":"publish","type":"post","link":"https:\/\/test.viox.com\/cs\/mccb-full-form-molded-case-circuit-breaker\/","title":{"rendered":"MCCB Full Form v elektrotechnice: V\u00fdznam, funkce a aplikace"},"content":{"rendered":"<div class=\"product-intro\">\n<p>Na str\u00e1nk\u00e1ch <strong>Zkratka MCCB<\/strong> v elektrick\u00fdch syst\u00e9mech je <strong>Jisti\u010d s lisovan\u00fdm pouzdrem<\/strong>.<\/p>\n<p>MCCB je n\u00edzkonap\u011b\u0165ov\u00fd jisti\u010d pou\u017e\u00edvan\u00fd k ochran\u011b nap\u00e1je\u010d\u016f, v\u011bt\u0161\u00edch z\u00e1t\u011b\u017e\u00ed a distribu\u010dn\u00edch obvod\u016f p\u0159ed p\u0159et\u00ed\u017een\u00edm a zkratem. Stru\u010dn\u011b \u0159e\u010deno, zat\u00edmco mnoho standardn\u00edch aplikac\u00ed MCB z\u016fst\u00e1v\u00e1 v rozsahu ni\u017e\u0161\u00edch odbo\u010dovac\u00edch obvod\u016f, MCCB se pou\u017e\u00edvaj\u00ed v mnohem vy\u0161\u0161\u00edch proudov\u00fdch \u00farovn\u00edch a mohou se \u0161k\u00e1lovat do mnohem v\u011bt\u0161\u00edch pr\u016fmyslov\u00fdch a komer\u010dn\u00edch ochrann\u00fdch \u00faloh, v z\u00e1vislosti na produktov\u00e9 \u0159ad\u011b a standardech, jako je IEC 60947-2.<\/p>\n<p>Tento term\u00edn je d\u016fle\u017eit\u00fd, proto\u017ee roz\u0161i\u0159uje v\u00edce ne\u017e jen zkratku. \u0158\u00edk\u00e1 v\u00e1m, \u017ee jisti\u010d je uzav\u0159en v lisovan\u00e9m izola\u010dn\u00edm pouzd\u0159e a je konstruov\u00e1n pro n\u00e1ro\u010dn\u011bj\u0161\u00ed ochrann\u00e9 \u00fakoly ne\u017e typick\u00fd miniaturn\u00ed jisti\u010d.<\/p>\n<p>Pro \u0161ir\u0161\u00ed p\u0159ehled za\u0159\u00edzen\u00ed mimo tuto str\u00e1nku se zkratkami viz <a href=\"https:\/\/test.viox.com\/cs\/what-is-a-molded-case-circuit-breaker-mccb\/\">Co je to jisti\u010d s tvarovan\u00fdm pouzdrem (MCCB)?<\/a>.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/Molded-case-circuit-breaker-installed-in-an-industrial-distribution-panel.webp\" alt=\"Molded Case Circuit Breaker Installed In An Industrial Distribution Panel\" \/><figcaption style=\"font-style: italic; margin-top: 10px; color: #555;\">Detailn\u00ed pohled na <a href=\"https:\/\/test.viox.com\/cs\/mccb\/\">Jisti\u010d s lisovan\u00fdm pouzdrem (MCCB)<\/a> spr\u00e1vn\u011b nainstalovan\u00fd v pr\u016fmyslov\u00e9m elektrick\u00e9m rozvad\u011b\u010di.<\/figcaption><\/figure>\n<h2>Co znamen\u00e1 MCCB v elektrick\u00fdch syst\u00e9mech?<\/h2>\n<p>MCCB znamen\u00e1 <strong>Jisti\u010d s lisovan\u00fdm pouzdrem<\/strong>.<\/p>\n<p>Ka\u017ed\u00e1 \u010d\u00e1st n\u00e1zvu popisuje n\u011bco u\u017eite\u010dn\u00e9ho:<\/p>\n<ul>\n<li><strong>Molded (lisovan\u00fd)<\/strong> odkazuje na izola\u010dn\u00ed pouzdro vytvo\u0159en\u00e9 kolem t\u011bla za\u0159\u00edzen\u00ed<\/li>\n<li><strong>Case (pouzdro)<\/strong> odkazuje na uzav\u0159enou konstrukci, kter\u00e1 obsahuje vnit\u0159n\u00ed sp\u00ednac\u00ed a vyp\u00ednac\u00ed mechanismus<\/li>\n<li><strong>Jisti\u010d<\/strong> odkazuje na funkci za\u0159\u00edzen\u00ed: automatick\u00e9 p\u0159eru\u0161en\u00ed obvodu, kdy\u017e poruchov\u00e9 nebo p\u0159et\u011b\u017eovac\u00ed podm\u00ednky p\u0159ekro\u010d\u00ed konstrukci nebo nastaven\u00ed jisti\u010de<\/li>\n<\/ul>\n<p>Proto je MCCB jak zkratka, tak kategorie za\u0159\u00edzen\u00ed. Popisuje konstrukci, ochrannou funkci a \u00farove\u0148 aplikace sou\u010dasn\u011b.<\/p>\n<h2>Co d\u011bl\u00e1 MCCB?<\/h2>\n<p>MCCB chr\u00e1n\u00ed obvody a za\u0159\u00edzen\u00ed p\u0159eru\u0161en\u00edm proudu, kdy\u017e nastanou abnorm\u00e1ln\u00ed podm\u00ednky. V z\u00e1vislosti na vyp\u00ednac\u00ed jednotce a aplikaci lze MCCB pou\u017e\u00edt pro:<\/p>\n<ul>\n<li>ochranu proti p\u0159et\u00ed\u017een\u00ed<\/li>\n<li>ochranu proti zkratu<\/li>\n<li>izolaci a sp\u00edn\u00e1n\u00ed nap\u00e1je\u010de v r\u00e1mci postup\u016f \u00fadr\u017eby<\/li>\n<li>koordinaci s ochrann\u00fdmi za\u0159\u00edzen\u00edmi na vstupu a v\u00fdstupu<\/li>\n<\/ul>\n<p>V mnoha komer\u010dn\u00edch a pr\u016fmyslov\u00fdch syst\u00e9mech je MCCB zvolen proto, \u017ee ochrann\u00fd \u00fakol je p\u0159\u00edli\u0161 n\u00e1ro\u010dn\u00fd pro mal\u00fd jisti\u010d odbo\u010dovac\u00edho obvodu. M\u016f\u017ee to b\u00fdt zp\u016fsobeno \u00farovn\u00ed proudu, dostupn\u00fdm poruchov\u00fdm proudem, nastavitelnost\u00ed, po\u017eadavky na selektivitu nebo fyzickou n\u00e1ro\u010dnost\u00ed instalace.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/Technical-infographic-showing-the-MCCB-full-form-and-key-parts-of-a-molded-case-circuit-breaker.webp\" alt=\"Technical Infographic Showing The MCCB Full Form And Key Parts\" \/><figcaption style=\"font-style: italic; margin-top: 10px; color: #555;\">Podrobn\u00e1 technick\u00e1 infografika ilustruj\u00edc\u00ed plnou formu MCCB a zd\u016fraz\u0148uj\u00edc\u00ed jej\u00ed kl\u00ed\u010dov\u00e9 vnit\u0159n\u00ed a vn\u011bj\u0161\u00ed komponenty.<\/figcaption><\/figure>\n<h2>Pro\u010d se tomu \u0159\u00edk\u00e1 lisovan\u00fd jisti\u010d?<\/h2>\n<p>\u010c\u00e1st \u201clisovan\u00e9 pouzdro\u201d je d\u016fle\u017eit\u00e1, proto\u017ee odli\u0161uje toto za\u0159\u00edzen\u00ed od men\u0161\u00edch jisti\u010d\u016f a od jin\u00fdch rodin sp\u00ednac\u00edch za\u0159\u00edzen\u00ed.<\/p>\n<p>Lisovan\u00e9 pouzdro:<\/p>\n<ul>\n<li>poskytuje izolaci kolem vnit\u0159n\u00edch \u017eiv\u00fdch \u010d\u00e1st\u00ed<\/li>\n<li>podporuje strukturu jisti\u010de p\u0159i tepeln\u00e9m a mechanick\u00e9m nam\u00e1h\u00e1n\u00ed<\/li>\n<li>uzav\u00edr\u00e1 kontakty a vyp\u00ednac\u00ed mechanismus<\/li>\n<li>umo\u017e\u0148uje konstrukci za\u0159\u00edzen\u00ed pro n\u00e1ro\u010dn\u011bj\u0161\u00ed proudov\u00e9 a p\u0159eru\u0161ovac\u00ed \u00fakoly<\/li>\n<\/ul>\n<p>To je jeden z d\u016fvod\u016f, pro\u010d se MCCB \u0161iroce pou\u017e\u00edvaj\u00ed v rozvad\u011b\u010d\u00edch, sp\u00ednac\u00edch desk\u00e1ch, nap\u00e1je\u010d\u00edch stroj\u016f, gener\u00e1torov\u00fdch syst\u00e9mech a pr\u016fmyslov\u00fdch distribu\u010dn\u00edch za\u0159\u00edzen\u00edch.<\/p>\n<h2>MCCB vs MCB: Rozd\u00edl, kter\u00fd v\u011bt\u0161ina lid\u00ed pot\u0159ebuje nejprve<\/h2>\n<p>Neju\u017eite\u010dn\u011bj\u0161\u00ed prvn\u00ed srovn\u00e1n\u00ed je MCCB vs MCB.<\/p>\n<table style=\"border-collapse: collapse; width: 100%; text-align: left;\" border=\"1\">\n<thead>\n<tr>\n<th style=\"padding: 8px;\">Za\u0159\u00edzen\u00ed<\/th>\n<th style=\"padding: 8px;\">Cel\u00fd n\u00e1zev<\/th>\n<th style=\"padding: 8px;\">Typick\u00e1 role<\/th>\n<th style=\"padding: 8px;\">Hlavn\u00ed rozd\u00edl<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>MCB<\/strong><\/td>\n<td style=\"padding: 8px;\">Miniaturn\u00ed jisti\u010d<\/td>\n<td style=\"padding: 8px;\">Koncov\u00e9 obvody a men\u0161\u00ed z\u00e1t\u011b\u017ee<\/td>\n<td style=\"padding: 8px;\">Kompaktn\u00ed za\u0159\u00edzen\u00ed obvykle pou\u017e\u00edvan\u00e9 v odbo\u010dovac\u00edch obvodech s ni\u017e\u0161\u00edm proudem s pevn\u00fdmi nebo jednodu\u0161\u0161\u00edmi ochrann\u00fdmi charakteristikami<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>MCCB<\/strong><\/td>\n<td style=\"padding: 8px;\">Jisti\u010d s lisovan\u00fdm pouzdrem<\/td>\n<td style=\"padding: 8px;\">Nap\u00e1je\u010de, v\u011bt\u0161\u00ed z\u00e1t\u011b\u017ee, pr\u016fmyslov\u00e1 a komer\u010dn\u00ed distribuce<\/td>\n<td style=\"padding: 8px;\">Vy\u0161\u0161\u00ed proudov\u00fd rozsah, siln\u011bj\u0161\u00ed p\u0159eru\u0161ovac\u00ed schopnost a \u0161ir\u0161\u00ed nastavitelnost nebo mo\u017enosti vyp\u00ednac\u00ed jednotky<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Rozd\u00edl nen\u00ed jen ve fyzick\u00e9 velikosti. MCCB se obvykle vol\u00ed, kdy\u017e obvod pot\u0159ebuje v\u011bt\u0161\u00ed flexibilitu ochrany, vy\u0161\u0161\u00ed p\u0159eru\u0161ovac\u00ed v\u00fdkon nebo robustn\u011bj\u0161\u00ed platformu za\u0159\u00edzen\u00ed.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/Comparison-infographic-showing-the-differences-between-MCCB-and-MCB.webp\" alt=\"Comparison Infographic Showing The Differences Between MCCB And MCB\" \/><figcaption style=\"font-style: italic; margin-top: 10px; color: #555;\">Jasn\u00e1 infografika srovn\u00e1vaj\u00edc\u00ed vedle sebe vysv\u011btluj\u00edc\u00ed z\u0159eteln\u00e9 rozd\u00edly v aplikac\u00edch a specifikac\u00edch mezi za\u0159\u00edzen\u00edmi MCCB a MCB.<\/figcaption><\/figure>\n<p>Pro kompletn\u00ed srovn\u00e1n\u00ed vedle sebe viz <a href=\"https:\/\/test.viox.com\/cs\/mccb-vs-mcb\/\">MCCB vs MCB<\/a>.<\/p>\n<h2>Termomagnetick\u00e9 vs. elektronick\u00e9 vyp\u00ednac\u00ed jednotky MCCB<\/h2>\n<p>Jedn\u00edm z nejd\u016fle\u017eit\u011bj\u0161\u00edch rozd\u00edl\u016f v modern\u00edm designu MCCB je typ vyp\u00ednac\u00ed jednotky.<\/p>\n<h3>Termomagnetick\u00e9 MCCB<\/h3>\n<p>Termomagnetick\u00e9 MCCB pou\u017e\u00edvaj\u00ed:<\/p>\n<ul>\n<li>a <strong>tepeln\u00fd prvek<\/strong> pro odezvu na p\u0159et\u00ed\u017een\u00ed<\/li>\n<li>a <strong>magnetick\u00fd prvek<\/strong> pro odezvu na zkrat<\/li>\n<\/ul>\n<p>Jsou b\u011b\u017en\u00e9 v konven\u010dn\u00ed distribuci energie a jsou \u010dasto preferov\u00e1ny tam, kde je jednoduchost, zn\u00e1most a kontrola n\u00e1klad\u016f d\u016fle\u017eit\u011bj\u0161\u00ed ne\u017e pokro\u010dil\u00e1 p\u0159esnost nastaven\u00ed.<\/p>\n<h3>Elektronick\u00e9 MCCB<\/h3>\n<p>Elektronick\u00e9 nebo polovodi\u010dov\u00e9 vyp\u00ednac\u00ed MCCB pou\u017e\u00edvaj\u00ed elektronick\u00e9 sn\u00edm\u00e1n\u00ed a vyp\u00ednac\u00ed logiku, sp\u00ed\u0161e ne\u017e aby se spol\u00e9haly pouze na tepeln\u00e9 a magnetick\u00e9 prvky. Tyto n\u00e1vrhy se obvykle vol\u00ed, kdy\u017e syst\u00e9m pot\u0159ebuje:<\/p>\n<ul>\n<li>v\u00edce nastaviteln\u00fdch nastaven\u00ed ochrany<\/li>\n<li>lep\u0161\u00ed koordinaci mezi jisti\u010di<\/li>\n<li>jasn\u011bj\u0161\u00ed lad\u011bn\u00ed ochrany pro nap\u00e1je\u010de a v\u011bt\u0161\u00ed z\u00e1t\u011b\u017ee<\/li>\n<li>vylep\u0161en\u00e9 monitorov\u00e1n\u00ed nebo integraci p\u0159\u00edslu\u0161enstv\u00ed v pokro\u010dil\u00fdch syst\u00e9mech<\/li>\n<\/ul>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/Technical-diagram-comparing-thermal-magnetic-and-electronic-MCCB-trip-units-with-Icu-and-Ics-notes.webp\" alt=\"Technical Diagram Comparing Thermal-Magnetic And Electronic MCCB Trip Units With Icu And Ics Notes\" \/><figcaption style=\"font-style: italic; margin-top: 10px; color: #555;\">Technick\u00fd diagram porovn\u00e1vaj\u00edc\u00ed pracovn\u00ed principy termomagnetick\u00fdch a elektronick\u00fdch vyp\u00ednac\u00edch jednotek MCCB, zd\u016fraz\u0148uj\u00edc\u00ed nastavitelnost a z\u00e1kladn\u00ed jmenovit\u00e9 hodnoty Icu\/Ics.<\/figcaption><\/figure>\n<p>Pro \u010dten\u00e1\u0159e, kte\u0159\u00ed pot\u0159ebuj\u00ed tento rozd\u00edl podrobn\u011bji, <a href=\"https:\/\/test.viox.com\/cs\/electronic-vs-thermal-magnetic-mccb\/\">Elektronick\u00e9 vs. termomagnetick\u00e9 MCCB<\/a> je spr\u00e1vn\u00e1 navazuj\u00edc\u00ed str\u00e1nka.<\/p>\n<h2>Kl\u00ed\u010dov\u00e9 specifikace MCCB, kter\u00e9 stoj\u00ed za to rozpoznat<\/h2>\n<p>Tato str\u00e1nka je hlavn\u011b o terminologii, ale n\u011bkolik specifikac\u00ed vysv\u011btluje, pro\u010d MCCB pat\u0159\u00ed do n\u00e1ro\u010dn\u011bj\u0161\u00edch syst\u00e9m\u016f.<\/p>\n<table style=\"border-collapse: collapse; width: 100%; text-align: left;\" border=\"1\">\n<thead>\n<tr>\n<th style=\"padding: 8px;\">Parametr<\/th>\n<th style=\"padding: 8px;\">Pro\u010d na tom z\u00e1le\u017e\u00ed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\">Jmenovit\u00fd proud<\/td>\n<td style=\"padding: 8px;\">Ud\u00e1v\u00e1 rozsah trval\u00e9ho proudu, kter\u00fd je MCCB ur\u010den k p\u0159en\u00e1\u0161en\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">P\u0159eru\u0161ovac\u00ed schopnost<\/td>\n<td style=\"padding: 8px;\">Ud\u00e1v\u00e1, kolik poruchov\u00e9ho proudu m\u016f\u017ee jisti\u010d bezpe\u010dn\u011b p\u0159eru\u0161it<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Amp\u00e9rov\u00fd r\u00e1mec (AF)<\/td>\n<td style=\"padding: 8px;\">Pom\u00e1h\u00e1 definovat velikost r\u00e1mu jisti\u010de a rozsah pou\u017eit\u00ed v r\u00e1mci produktov\u00e9 \u0159ady<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Typ vyp\u00ednac\u00ed jednotky<\/td>\n<td style=\"padding: 8px;\">Ukazuje, zda za\u0159\u00edzen\u00ed pou\u017e\u00edv\u00e1 termomagnetickou nebo elektronickou ochrannou logiku<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Nastaviteln\u00e1 nastaven\u00ed<\/td>\n<td style=\"padding: 8px;\">D\u016fle\u017eit\u00e9, kdy\u017e syst\u00e9m vy\u017eaduje ochranu nebo koordinaci na m\u00edru<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Po\u010det p\u00f3l\u016f<\/td>\n<td style=\"padding: 8px;\">Ur\u010duje, zda se jisti\u010d pou\u017e\u00edv\u00e1 v jednof\u00e1zov\u00fdch nebo t\u0159\u00edf\u00e1zov\u00fdch syst\u00e9mech<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Tyto term\u00edny vysv\u011btluj\u00ed, pro\u010d MCCB nen\u00ed jen \u201cv\u011bt\u0161\u00ed jisti\u010d\u201d. Definuje, jak jisti\u010d zapad\u00e1 do syst\u00e9mu, jak koordinuje s ostatn\u00edmi ochrann\u00fdmi za\u0159\u00edzen\u00edmi a jak velkou kontrolu m\u00e1 in\u017een\u00fdr nad chov\u00e1n\u00edm ochrany.<\/p>\n<h2>Rychl\u00fd tip pro profesion\u00e1ly: Icu vs Ics<\/h2>\n<p>Jedn\u00edm u\u017eite\u010dn\u00fdm rozli\u0161en\u00edm, kter\u00e9 odd\u011bluje z\u00e1kladn\u00ed popis MCCB od skute\u010dn\u00e9 technick\u00e9 diskuse, je rozd\u00edl mezi <strong>Icu<\/strong> a <strong>Ics<\/strong>.<\/p>\n<ul>\n<li><strong>Icu<\/strong> je mezn\u00ed zkratov\u00e1 vyp\u00ednac\u00ed schopnost<\/li>\n<li><strong>Ics<\/strong> je provozn\u00ed zkratov\u00e1 vyp\u00ednac\u00ed schopnost<\/li>\n<\/ul>\n<p>Jednodu\u0161e \u0159e\u010deno, Icu popisuje maxim\u00e1ln\u00ed schopnost p\u0159eru\u0161en\u00ed poruchy za definovan\u00fdch testovac\u00edch podm\u00ednek, zat\u00edmco Ics je v\u00edce spojen s o\u010dek\u00e1van\u00fdm provozn\u00edm v\u00fdkonem jisti\u010de po p\u0159eru\u0161en\u00ed. P\u0159i porovn\u00e1v\u00e1n\u00ed MCCB pro skute\u010dn\u00e9 projekty m\u016f\u017ee v\u00e9st k nespr\u00e1vn\u00e9mu v\u00fdb\u011bru za\u0159\u00edzen\u00ed, pokud se d\u00edv\u00e1te pouze na hlavn\u00ed vyp\u00ednac\u00ed \u010d\u00edslo bez pochopen\u00ed Icu a Ics.<\/p>\n<p>Pro pr\u00e1ci s n\u00e1ro\u010dn\u00fdmi specifikacemi, <a href=\"https:\/\/test.viox.com\/cs\/how-to-select-an-mccb-for-a-panel\/\">Jak vybrat MCCB pro panel<\/a> je lep\u0161\u00edm dal\u0161\u00edm krokem.<\/p>\n<h2>Kde se pou\u017e\u00edvaj\u00ed MCCB?<\/h2>\n<p>MCCB se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed tam, kde mus\u00ed ochrana obvodu pokr\u00fdt v\u011bt\u0161\u00ed proudy, siln\u011bj\u0161\u00ed \u00farovn\u011b poruch nebo n\u00e1ro\u010dn\u011bj\u0161\u00ed provozn\u00ed podm\u00ednky, ne\u017e pro kter\u00e9 je ur\u010den miniaturn\u00ed jisti\u010d.<\/p>\n<p>Typick\u00e9 aplikace zahrnuj\u00ed:<\/p>\n<ul>\n<li>hlavn\u00ed vstupn\u00ed jisti\u010de v mal\u00fdch a st\u0159edn\u00edch rozvodn\u00fdch desk\u00e1ch<\/li>\n<li>ochrana nap\u00e1je\u010d\u016f v komer\u010dn\u00edch budov\u00e1ch<\/li>\n<li>pr\u016fmyslov\u00e9 rozvodn\u00e9 panely<\/li>\n<li>syst\u00e9my nap\u00e1jen\u00ed stroj\u016f a motor\u016f<\/li>\n<li>gener\u00e1tor a distribuce z\u00e1lo\u017en\u00edho nap\u00e1jen\u00ed<\/li>\n<li>HVAC, \u010derpadla a t\u011b\u017ek\u00e9 elektrick\u00e9 z\u00e1t\u011b\u017ee<\/li>\n<li>syst\u00e9my distribuce nab\u00edjen\u00ed EV v n\u011bkter\u00fdch komer\u010dn\u00edch instalac\u00edch<\/li>\n<\/ul>\n<p>V prost\u0159ed\u00edch s vysokou teplotou z\u00e1le\u017e\u00ed tak\u00e9 na detailech re\u00e1ln\u00e9 aplikace. Teplo panelu, podm\u00ednky krytu a zat\u00ed\u017een\u00ed okoln\u00edho za\u0159\u00edzen\u00ed mohou ovlivnit chov\u00e1n\u00ed jisti\u010de, tak\u017ee sn\u00ed\u017een\u00ed jmenovit\u00e9ho v\u00fdkonu a tepelnou kontrolu by nem\u011bly b\u00fdt p\u0159i praktick\u00e9m v\u00fdb\u011bru MCCB ignorov\u00e1ny.<\/p>\n<h2>Jak MCCB souvis\u00ed s ostatn\u00edmi term\u00edny jisti\u010d\u016f<\/h2>\n<p>MCCB je pouze jednou \u010d\u00e1st\u00ed \u0161ir\u0161\u00ed slovn\u00ed z\u00e1soby jisti\u010d\u016f pou\u017e\u00edvan\u00e9 v elektrick\u00fdch syst\u00e9mech.<\/p>\n<h3>Rychl\u00e1 referen\u010dn\u00ed tabulka<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; text-align: left;\" border=\"1\">\n<thead>\n<tr>\n<th style=\"padding: 8px;\">Zkratka<\/th>\n<th style=\"padding: 8px;\">Cel\u00fd n\u00e1zev<\/th>\n<th style=\"padding: 8px;\">Hlavn\u00ed role<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\"><strong>MCB<\/strong><\/td>\n<td style=\"padding: 8px;\">Miniaturn\u00ed jisti\u010d<\/td>\n<td style=\"padding: 8px;\">Chr\u00e1n\u00ed men\u0161\u00ed obvody p\u0159ed p\u0159et\u00ed\u017een\u00edm a zkratem<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>MCCB<\/strong><\/td>\n<td style=\"padding: 8px;\">Jisti\u010d s lisovan\u00fdm pouzdrem<\/td>\n<td style=\"padding: 8px;\">Chr\u00e1n\u00ed v\u011bt\u0161\u00ed obvody, nap\u00e1je\u010de a pr\u016fmyslov\u00e9 z\u00e1t\u011b\u017ee<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>RCCB<\/strong><\/td>\n<td style=\"padding: 8px;\">Proudov\u00fd chr\u00e1ni\u010d<\/td>\n<td style=\"padding: 8px;\">Chr\u00e1n\u00ed proti zbytkov\u00e9mu proudu nebo zemn\u00edmu \u00faniku, neposkytuje samostatnou ochranu proti p\u0159et\u00ed\u017een\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>RCBO<\/strong><\/td>\n<td style=\"padding: 8px;\">Proudov\u00fd chr\u00e1ni\u010d s nadproudovou ochranou<\/td>\n<td style=\"padding: 8px;\">Kombinuje ochranu proti zbytkov\u00e9mu proudu s ochranou proti nadproudu<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\"><strong>ACB<\/strong><\/td>\n<td style=\"padding: 8px;\">Vzduchov\u00fd Jisti\u010d<\/td>\n<td style=\"padding: 8px;\">Pou\u017e\u00edv\u00e1 se ve v\u011bt\u0161\u00edch n\u00edzkonap\u011b\u0165ov\u00fdch syst\u00e9mech nad mnoha b\u011b\u017en\u00fdmi aplikacemi MCCB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Pro \u0161ir\u0161\u00ed terminologickou mapu viz <a href=\"https:\/\/test.viox.com\/cs\/what-is-the-difference-between-mcb-mccb-rcb-rcd-rccb-and-rcbo\/\">rozd\u00edl mezi MCB, MCCB, RCB, RCD, RCCB a RCBO<\/a>.<\/p>\n<h2>\u010cASTO KLADEN\u00c9 DOTAZY<\/h2>\n<h3>Co znamen\u00e1 zkratka MCCB?<\/h3>\n<p>MCCB znamen\u00e1 <strong>Jisti\u010d s lisovan\u00fdm pouzdrem<\/strong>.<\/p>\n<h3>K \u010demu slou\u017e\u00ed MCCB?<\/h3>\n<p>MCCB chr\u00e1n\u00ed p\u0159\u00edvody, za\u0159\u00edzen\u00ed a distribu\u010dn\u00ed obvody p\u0159eru\u0161en\u00edm proudu b\u011bhem p\u0159et\u00ed\u017een\u00ed nebo zkratu v rozsahu ochrany dan\u00e9ho jisti\u010de.<\/p>\n<h3>Jak\u00fd je rozd\u00edl mezi MCCB a MCB?<\/h3>\n<p>Jisti\u010d MCB se obvykle pou\u017e\u00edv\u00e1 pro men\u0161\u00ed koncov\u00e9 obvody, zat\u00edmco jisti\u010d MCCB se pou\u017e\u00edv\u00e1 pro v\u011bt\u0161\u00ed obvody, p\u0159\u00edvody a n\u00e1ro\u010dn\u011bj\u0161\u00ed ochrann\u00e9 funkce. Jisti\u010de MCCB obecn\u011b poskytuj\u00ed \u0161ir\u0161\u00ed proudov\u00fd rozsah, vy\u0161\u0161\u00ed vyp\u00ednac\u00ed schopnost a pokro\u010dilej\u0161\u00ed mo\u017enosti ochrany.<\/p>\n<h3>Pro\u010d se jisti\u010d naz\u00fdv\u00e1 lisovan\u00fd jisti\u010d?<\/h3>\n<p>N\u00e1zev se vztahuje k lisovan\u00e9mu izola\u010dn\u00edmu pouzdru, kter\u00e9 chr\u00e1n\u00ed mechanismus jisti\u010de a podporuje za\u0159\u00edzen\u00ed v n\u00e1ro\u010dn\u011bj\u0161\u00edch elektrick\u00fdch aplikac\u00edch.<\/p>\n<h3>Kde se MCCB b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed?<\/h3>\n<p>MCCB se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v komer\u010dn\u00edch a pr\u016fmyslov\u00fdch rozvodech energie, ochran\u011b nap\u00e1je\u010d\u016f, strojn\u00edch panelech, gener\u00e1torov\u00fdch syst\u00e9mech a v\u011bt\u0161\u00edch elektrick\u00fdch z\u00e1t\u011b\u017e\u00edch.<\/p>\n<h3>Jak\u00fd je rozd\u00edl mezi termomagnetick\u00fdmi a elektronick\u00fdmi MCCB?<\/h3>\n<p>Jisti\u010de MCCB s tepelnou a magnetickou spou\u0161t\u00ed vyu\u017e\u00edvaj\u00ed tepeln\u00e9 a magnetick\u00e9 spou\u0161t\u011bc\u00ed prvky, zat\u00edmco elektronick\u00e9 jisti\u010de MCCB pou\u017e\u00edvaj\u00ed elektronick\u00e9 sn\u00edm\u00e1n\u00ed a spou\u0161t\u011bc\u00ed logiku pro v\u011bt\u0161\u00ed nastavitelnost a koordinaci v pokro\u010dilej\u0161\u00edch syst\u00e9mech.<\/p>\n<h2>Z\u00e1v\u011br<\/h2>\n<p>Na str\u00e1nk\u00e1ch <strong>Zkratka MCCB<\/strong> je <strong>Jisti\u010d s lisovan\u00fdm pouzdrem<\/strong>, ale tento term\u00edn je d\u016fle\u017eit\u00fd, proto\u017ee poukazuje na specifickou t\u0159\u00eddu ochrann\u00fdch za\u0159\u00edzen\u00ed pou\u017e\u00edvan\u00fdch v n\u00e1ro\u010dn\u011bj\u0161\u00edch elektrick\u00fdch syst\u00e9mech. MCCB nen\u00ed jen v\u011bt\u0161\u00ed jisti\u010d. Je to jisti\u010d navr\u017een\u00fd pro n\u00e1ro\u010dn\u011bj\u0161\u00ed role ochrany, siln\u011bj\u0161\u00ed po\u017eadavky na p\u0159eru\u0161en\u00ed a \u0161ir\u0161\u00ed flexibilitu aplikace v komer\u010dn\u00ed a pr\u016fmyslov\u00e9 distribuci energie.<\/p>\n<p>Proto pochopen\u00ed n\u00e1zvu, typu spou\u0161t\u011bc\u00ed jednotky a n\u011bkolika kl\u00ed\u010dov\u00fdch specifikac\u00ed jde mnohem d\u00e1le ne\u017e zapamatov\u00e1n\u00ed si samotn\u00e9 zkratky. Jakmile je zkratka jasn\u00e1, dal\u0161\u00edm praktick\u00fdm krokem je sladit jisti\u010d se syst\u00e9mem, \u00farovn\u00ed poruchy a c\u00edlem ochrany.<\/p>\n<\/div>\n<div class=\"simg-pop-btn\" style=\"top: 280px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 280px; left: 14px; display: none;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>The MCCB full form in electrical systems is Molded Case Circuit Breaker. An MCCB is a low-voltage circuit breaker used to protect feeders, larger loads, and distribution circuits from overload and short-circuit conditions. In brief, while many standard MCB applications stay within lower branch-circuit ranges, MCCBs are used across much higher current levels and can [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19130,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-19128","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/19128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/comments?post=19128"}],"version-history":[{"count":1,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/19128\/revisions"}],"predecessor-version":[{"id":21684,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/19128\/revisions\/21684"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/media\/19130"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/media?parent=19128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/categories?post=19128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/tags?post=19128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}