{"id":7120,"date":"2024-09-24T16:25:33","date_gmt":"2024-09-24T08:25:33","guid":{"rendered":"https:\/\/viox.com\/?p=7120"},"modified":"2026-03-28T16:50:34","modified_gmt":"2026-03-28T08:50:34","slug":"full-guide-to-molded-case-circuit-breakers-mccbs","status":"publish","type":"post","link":"https:\/\/test.viox.com\/cs\/full-guide-to-molded-case-circuit-breakers-mccbs\/","title":{"rendered":"Co je to lisovan\u00fd jisti\u010d (MCCB)? Kompletn\u00ed pr\u016fvodce principem fungov\u00e1n\u00ed, komponentami, jmenovit\u00fdmi hodnotami a aplikacemi"},"content":{"rendered":"<div class=\"product-intro\">\n<h2>P\u0159\u00edm\u00e1 odpov\u011b\u010f<\/h2>\n<figure style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/img.viox.com\/Molded-case-circuit-breaker-installed-in-a-low-voltage-industrial-distribution-panel.webp\" alt=\"Molded case circuit breaker installed in a low voltage industrial distribution panel\" \/><figcaption><em>T\u011b\u017ek\u00fd lisovan\u00fd jisti\u010d (MCCB) bezpe\u010dn\u011b instalovan\u00fd v n\u00edzkonap\u011b\u0165ov\u00e9m pr\u016fmyslov\u00e9m rozvad\u011b\u010di, p\u0159ipraven\u00fd chr\u00e1nit distribu\u010dn\u00ed za\u0159\u00edzen\u00ed.<\/em><\/figcaption><\/figure>\n<p>A <strong>lisovan\u00fd jisti\u010d (MCCB)<\/strong> je n\u00edzkonap\u011b\u0165ov\u00fd jisti\u010d pou\u017e\u00edvan\u00fd k ochran\u011b nap\u00e1je\u010d\u016f, v\u011bt\u0161\u00edch odbo\u010dn\u00fdch obvod\u016f, nap\u00e1jen\u00ed stroj\u016f a distribu\u010dn\u00edch za\u0159\u00edzen\u00ed proti p\u0159et\u00ed\u017een\u00ed a zkrat\u016fm. Ve srovn\u00e1n\u00ed s men\u0161\u00edm <a href=\"https:\/\/test.viox.com\/cs\/mcb\/\">MCB<\/a>, nab\u00edz\u00ed MCCB obvykle vy\u0161\u0161\u00ed proudov\u00fd rozsah, vy\u0161\u0161\u00ed vyp\u00ednac\u00ed schopnost a flexibiln\u011bj\u0161\u00ed mo\u017enosti spou\u0161t\u011bc\u00edch jednotek pro komer\u010dn\u00ed a pr\u016fmyslov\u00e9 energetick\u00e9 syst\u00e9my.<\/p>\n<p>V praktick\u00e9m smyslu se MCCB nach\u00e1z\u00ed uprost\u0159ed hierarchie n\u00edzkonap\u011b\u0165ov\u00e9 ochrany:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/test.viox.com\/cs\/mcb\/\">MCB<\/a><\/strong> pro men\u0161\u00ed koncov\u00e9 obvody<\/li>\n<li><a href=\"https:\/\/test.viox.com\/cs\/mccb\/\"><strong>MCCB<\/strong><\/a> pro v\u011bt\u0161\u00ed nap\u00e1je\u010de a ochranu odbo\u010dek s vy\u0161\u0161\u00edm zat\u00ed\u017een\u00edm<\/li>\n<li><strong><a href=\"https:\/\/test.viox.com\/cs\/acb\/\">ACB<\/a><\/strong> pro role rozvad\u011b\u010d\u016f s nejvy\u0161\u0161\u00edm proudem a n\u00edzk\u00fdm nap\u011bt\u00edm<\/li>\n<\/ul>\n<p>Pokud se sna\u017e\u00edte rozhodnout, zda v\u00e1\u0161 syst\u00e9m p\u0159erostl miniaturn\u00ed jisti\u010d, pak je to praktick\u00e1 hranice: <strong>MCCB je robustn\u011bj\u0161\u00ed n\u00edzkonap\u011b\u0165ov\u00fd jisti\u010d pou\u017e\u00edvan\u00fd, kdy\u017e obvod pot\u0159ebuje v\u011bt\u0161\u00ed kapacitu a flexibiln\u011bj\u0161\u00ed ochranu, ne\u017e jakou obvykle m\u016f\u017ee poskytnout miniaturn\u00ed jisti\u010d.<\/strong><\/p>\n<p>Pokud pot\u0159ebujete pouze vysv\u011btlen\u00ed zkratky, viz <a href=\"https:\/\/test.viox.com\/cs\/mccb-full-form-molded-case-circuit-breaker\/\">Pln\u00fd n\u00e1zev MCCB: Molded Case Circuit Breaker (jisti\u010d v lisovan\u00e9m pouzd\u0159e)<\/a>.<\/p>\n<h2>Kl\u00ed\u010dov\u00e9 poznatky<\/h2>\n<ul>\n<li>MCCB je <strong>jisti\u010d v lisovan\u00e9m pouzd\u0159e<\/strong> pou\u017e\u00edvan\u00fd pro n\u00edzkonap\u011b\u0165ov\u00e9 nap\u00e1je\u010de a ochranu obvod\u016f s vy\u0161\u0161\u00edm zat\u00ed\u017een\u00edm.<\/li>\n<li>MCCB se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed tam, kde proud, \u00farove\u0148 poruchy nebo po\u017eadavky na nastaven\u00ed vypnut\u00ed p\u0159ekra\u010duj\u00ed praktick\u00fd rozsah standardn\u00edch <a href=\"https:\/\/test.viox.com\/cs\/mcb\/\">MCB<\/a>.<\/li>\n<li>Nejd\u016fle\u017eit\u011bj\u0161\u00ed je pochopit: co je uvnit\u0159 MCCB, jak vyp\u00edn\u00e1 a na kter\u00fdch jmenovit\u00fdch hodnot\u00e1ch z\u00e1le\u017e\u00ed.<\/li>\n<li>Kl\u00ed\u010dov\u00e9 jmenovit\u00e9 hodnoty nejsou jen proud a nap\u011bt\u00ed. Zahrnuj\u00ed tak\u00e9 vyp\u00ednac\u00ed schopnost, typ spou\u0161t\u011bc\u00ed jednotky a po\u017eadavky na p\u0159\u00edslu\u0161enstv\u00ed.<\/li>\n<li>Pr\u016fvodce MCCB by m\u011bl nejprve vysv\u011btlit z\u00e1klady. Podrobn\u00fd v\u00fdb\u011br, porovn\u00e1n\u00ed a lad\u011bn\u00ed spou\u0161t\u011bc\u00ed jednotky se pak mohou rozd\u011blit do specializovan\u011bj\u0161\u00edch str\u00e1nek.<\/li>\n<\/ul>\n<h2>Co je to jisti\u010d (MCCB)?<\/h2>\n<p>MCCB je nadproudov\u00e9 ochrann\u00e9 za\u0159\u00edzen\u00ed uzav\u0159en\u00e9 v lisovan\u00e9m izola\u010dn\u00edm pouzd\u0159e. Je ur\u010den pro n\u00edzkonap\u011b\u0165ov\u00e9 syst\u00e9my, kde obvod vy\u017eaduje robustn\u011bj\u0161\u00ed ochranu, ne\u017e jakou obvykle m\u016f\u017ee nab\u00eddnout miniaturn\u00ed odbo\u010dkov\u00fd jisti\u010d.<\/p>\n<p>Fr\u00e1ze <code>lisovan\u00e9 pouzdro<\/code> se vztahuje na izola\u010dn\u00ed pouzdro, kter\u00e9 obsahuje kontakty vedouc\u00ed proud, ovl\u00e1dac\u00ed mechanismus, strukturu pro p\u0159eru\u0161en\u00ed oblouku a spou\u0161t\u011bc\u00ed jednotku. Jisti\u010d nen\u00ed otev\u0159en\u00fd jako ACB a nen\u00ed tak kompaktn\u00ed nebo omezen\u00fd v zat\u00ed\u017een\u00ed jako mal\u00fd miniaturn\u00ed jisti\u010d na DIN li\u0161tu.<\/p>\n<p>Ve v\u011bt\u0161in\u011b re\u00e1ln\u00fdch instalac\u00ed se MCCB pou\u017e\u00edvaj\u00ed pro:<\/p>\n<ul>\n<li>v\u00fdstupn\u00ed nap\u00e1je\u010de z rozvodn\u00fdch desek<\/li>\n<li>v\u011bt\u0161\u00ed obvody motor\u016f a stroj\u016f<\/li>\n<li>rozvod podru\u017en\u00fdch s\u00edt\u00ed<\/li>\n<li>ochrana nap\u00e1je\u010d\u016f gener\u00e1tor\u016f a souvisej\u00edc\u00edch s p\u0159ep\u00edn\u00e1n\u00edm<\/li>\n<li>ochrana odbo\u010dek panel\u016f a rozvad\u011b\u010d\u016f nad r\u00e1mec typick\u00fdch povinnost\u00ed MCB<\/li>\n<\/ul>\n<p>Pokud chcete sp\u00ed\u0161e pohled na \u00farovni produktu ne\u017e vzd\u011bl\u00e1vac\u00ed p\u0159ehled, pod\u00edvejte se na <a href=\"https:\/\/test.viox.com\/cs\/mccb\/\">Str\u00e1nka VIOX MCCB<\/a>.<\/p>\n<h2>Jak funguje MCCB<\/h2>\n<figure style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-diagram-showing-how-a-molded-case-circuit-breaker-detects-faults-and-interrupts-current.webp\" alt=\"Technical diagram showing how a molded case circuit breaker detects faults and interrupts current\" \/><figcaption><em>Podrobn\u00fd technick\u00fd diagram ilustruj\u00edc\u00ed proces detekce poruchy a p\u0159eru\u0161en\u00ed proudu MCCB za podm\u00ednek p\u0159et\u00ed\u017een\u00ed a zkratu.<\/em><\/figcaption><\/figure>\n<p>Na vysok\u00e9 \u00farovni pln\u00ed MCCB dv\u011b \u00falohy:<\/p>\n<ol>\n<li>Trvale p\u0159en\u00e1\u0161\u00ed norm\u00e1ln\u00ed zat\u011b\u017eovac\u00ed proud v r\u00e1mci sv\u00e9ho jmenovit\u00e9ho proudu.<\/li>\n<li>Automaticky otev\u00edr\u00e1 obvod, kdy\u017e poruchov\u00fd stav p\u0159ekro\u010d\u00ed jeho vyp\u00ednac\u00ed charakteristiky.<\/li>\n<\/ol>\n<p>Jisti\u010d detekuje poruchy prost\u0159ednictv\u00edm sv\u00e9ho vyp\u00ednac\u00edho syst\u00e9mu, kter\u00fd m\u016f\u017ee b\u00fdt:<\/p>\n<ul>\n<li><strong>tepeln\u011b-magnetick\u00fd<\/strong><\/li>\n<li><strong>elektronick\u00fd<\/strong><\/li>\n<\/ul>\n<p>V tepeln\u011b-magnetick\u00e9m MCCB:<\/p>\n<ul>\n<li>tepeln\u00fd prvek reaguje na trval\u00e9 p\u0159et\u00ed\u017een\u00ed<\/li>\n<li>magnetick\u00fd prvek reaguje na vy\u0161\u0161\u00ed zkratov\u00e9 proudy<\/li>\n<\/ul>\n<p>V elektronick\u00e9m MCCB:<\/p>\n<ul>\n<li>proud se m\u011b\u0159\u00ed p\u0159esn\u011bji<\/li>\n<li>logiku vypnut\u00ed lze \u010dasto upravit nap\u0159\u00ed\u010d v\u00edce ochrann\u00fdmi funkcemi<\/li>\n<li>koordinace a aplika\u010dn\u00ed flexibilita jsou obvykle vy\u0161\u0161\u00ed<\/li>\n<\/ul>\n<p>V pokro\u010dilej\u0161\u00edch aplikac\u00edch to obvykle znamen\u00e1, \u017ee in\u017een\u00fdr u\u017e nep\u0159em\u00fd\u0161l\u00ed jen o tom, \u201cjestli to vypne?\u201d, ale tak\u00e9 o tom <strong>jak<\/strong> to vypne. O elektronick\u00fdch spou\u0161t\u011bc\u00edch jednotk\u00e1ch se \u010dasto diskutuje prost\u0159ednictv\u00edm ochrann\u00fdch funkc\u00ed, jako jsou <code>L<\/code>, <code>S<\/code>, <code>I<\/code>, a n\u011bkdy <code>G<\/code>:<\/p>\n<ul>\n<li><code>L<\/code> = ochrana proti dlouhodob\u00e9mu p\u0159et\u00ed\u017een\u00ed<\/li>\n<li><code>S<\/code> = ochrana proti kr\u00e1tkodob\u00e9mu p\u0159et\u00ed\u017een\u00ed<\/li>\n<li><code>I<\/code> = okam\u017eit\u00e1 ochrana<\/li>\n<li><code>G<\/code> = zemn\u00ed ochrana, pokud je k dispozici<\/li>\n<\/ul>\n<p>Tato nastaven\u00ed formuj\u00ed za\u0159\u00edzen\u00ed <strong>\u010dasov\u011b-proudov\u00e1 charakteristika (TCC)<\/strong> a jsou kl\u00ed\u010dov\u00e9 pro koordina\u010dn\u00ed studie. Jin\u00fdmi slovy, elektronick\u00fd MCCB se \u010dasto vyb\u00edr\u00e1 nejen pro vy\u0161\u0161\u00ed proud, ale proto, \u017ee jeho chov\u00e1n\u00ed p\u0159i vypnut\u00ed lze vyladit tak, aby odpov\u00eddalo zbytku syst\u00e9mu.<\/p>\n<p>Samotn\u00e1 sekvence p\u0159eru\u0161en\u00ed je mechanick\u00e1 a elektrick\u00e1. Kdy\u017e spou\u0161t\u011bc\u00ed jednotka p\u0159ik\u00e1\u017ee jisti\u010di otev\u0159\u00edt se, kontakty se odd\u011bl\u00ed, vytvo\u0159\u00ed se oblouk a oblouk je vtla\u010den do struktury pro \u0159\u00edzen\u00ed oblouku, dokud nen\u00ed poruchov\u00fd proud bezpe\u010dn\u011b p\u0159eru\u0161en.<\/p>\n<p>Podrobn\u00e9 srovn\u00e1n\u00ed technologi\u00ed naleznete v <a href=\"https:\/\/test.viox.com\/cs\/electronic-vs-thermal-magnetic-mccb\/\">Elektronick\u00e9 vs. termomagnetick\u00e9 MCCB<\/a>.<\/p>\n<h2>Co je uvnit\u0159 MCCB?<\/h2>\n<figure style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-infographic-showing-the-main-internal-parts-of-a-molded-case-circuit-breaker.webp\" alt=\"Technical infographic showing the main internal parts of a molded case circuit breaker\" \/><figcaption><em>Podrobn\u00fd technick\u00fd rozbor vnit\u0159n\u00edch komponent MCCB, kter\u00fd p\u0159edstavuje spou\u0161t\u011bc\u00ed jednotku, obloukovou komoru a robustn\u00ed lisovan\u00e9 pouzdro.<\/em><\/figcaption><\/figure>\n<p>Toto je jeden z neju\u017eite\u010dn\u011bj\u0161\u00edch zp\u016fsob\u016f, jak odpov\u011bd\u011bt na <code>uvnit\u0159 mccb<\/code> dotaz, proto\u017ee mnoho \u010dten\u00e1\u0159\u016f se ve skute\u010dnosti pt\u00e1, jak je za\u0159\u00edzen\u00ed postaveno a pro\u010d stoj\u00ed v\u00edce ne\u017e miniaturn\u00ed jisti\u010d.<\/p>\n<p>Typick\u00e9 vnit\u0159n\u00ed \u010d\u00e1sti MCCB zahrnuj\u00ed:<\/p>\n<h3>1. Lisovan\u00e9 izola\u010dn\u00ed pouzdro<\/h3>\n<p>Pouzdro poskytuje mechanickou ochranu, izolaci, rozm\u011brovou stabilitu a podporu vnit\u0159n\u00edch \u010d\u00e1st\u00ed. Mus\u00ed tolerovat teplo, poruchov\u00e9 nam\u00e1h\u00e1n\u00ed a dlouhou \u017eivotnost v rozvad\u011b\u010d\u00edch a panelech.<\/p>\n<h3>2. Pevn\u00e9 a pohybliv\u00e9 kontakty<\/h3>\n<p>Tyto vodi\u010de vedou proud za norm\u00e1ln\u00edho provozu a odd\u011bluj\u00ed se p\u0159i vypnut\u00ed jisti\u010de. Konstrukce kontakt\u016f ovliv\u0148uje n\u00e1r\u016fst teploty, spolehlivost a elektrickou \u017eivotnost.<\/p>\n<h3>3. Provozn\u00ed mechanismus<\/h3>\n<p>Provozn\u00ed mechanismus ukl\u00e1d\u00e1 a uvol\u0148uje energii k otev\u0159en\u00ed nebo zav\u0159en\u00ed kontakt\u016f. Toto je \u010d\u00e1st, se kterou u\u017eivatel interaguje prost\u0159ednictv\u00edm rukojeti, ale je to tak\u00e9 mechanick\u00fd syst\u00e9m, kter\u00fd zaji\u0161\u0165uje, \u017ee se kontakty rozhodn\u011b otev\u0159ou za poruchov\u00fdch podm\u00ednek.<\/p>\n<h3>4. Vyp\u00ednac\u00ed jednotka<\/h3>\n<p>Vyp\u00ednac\u00ed jednotka je ochrann\u00fd mozek MCCB. V z\u00e1vislosti na typu jisti\u010de m\u016f\u017ee b\u00fdt:<\/p>\n<ul>\n<li>tepeln\u011b-magnetick\u00fd<\/li>\n<li>elektronick\u00e1 s nastaviteln\u00fdm nastaven\u00edm<\/li>\n<\/ul>\n<p>U pokro\u010dilej\u0161\u00edch konstrukc\u00ed podporuje vyp\u00ednac\u00ed jednotka funkce, jako je dlouhodob\u00e1, kr\u00e1tkodob\u00e1 a okam\u017eit\u00e1 ochrana, a n\u011bkdy i dal\u0161\u00ed logiku v z\u00e1vislosti na produktov\u00e9 \u0159ad\u011b.<\/p>\n<h3>5. Zh\u00e1\u0161ec\u00ed komora nebo struktura pro p\u0159eru\u0161en\u00ed oblouku<\/h3>\n<p>Kdy\u017e se jisti\u010d otev\u0159e p\u0159i poruchov\u00e9m proudu, vytvo\u0159\u00ed se elektrick\u00fd oblouk. Zh\u00e1\u0161ec\u00ed komora oblouk nat\u00e1hne, ochlad\u00ed a rozd\u011bl\u00ed, aby jisti\u010d mohl bezpe\u010dn\u011b p\u0159eru\u0161it proud.<\/p>\n<h3>6. Vstupn\u00ed a v\u00fdstupn\u00ed svorky<\/h3>\n<p>Tyto svorky p\u0159ipojuj\u00ed MCCB do syst\u00e9mu. V praktick\u00e9 instala\u010dn\u00ed pr\u00e1ci jsou kvalita svorek, kontrola utahovac\u00edho momentu, ulo\u017een\u00ed vodi\u010de a rozhran\u00ed p\u0159\u00edpojnic d\u016fle\u017eit\u00e9 pro dlouhodobou spolehlivost.<\/p>\n<h3>7. P\u0159\u00edslu\u0161enstv\u00ed<\/h3>\n<p>Mnoho MCCB podporuje p\u0159\u00edslu\u0161enstv\u00ed, jako jsou:<\/p>\n<ul>\n<li>pomocn\u00e9 kontakty<\/li>\n<li>vyp\u00ednac\u00ed spou\u0161t\u011b<\/li>\n<li>podp\u011b\u0165ov\u00e9 spou\u0161t\u011b<\/li>\n<li>motorov\u00e9 pohony<\/li>\n<li>alarmov\u00e9 kontakty<\/li>\n<\/ul>\n<p>Tyto prvky prom\u011b\u0148uj\u00ed jisti\u010d z jednoduch\u00e9ho ochrann\u00e9ho za\u0159\u00edzen\u00ed na sou\u010d\u00e1st \u0161ir\u0161\u00edho \u0159\u00eddic\u00edho a monitorovac\u00edho syst\u00e9mu.<\/p>\n<p>Pokud je p\u0159\u00edslu\u0161enstv\u00ed pro va\u0161i aplikaci z\u00e1sadn\u00ed, stoj\u00ed za to se samostatn\u011b zab\u00fdvat souvisej\u00edc\u00edmi specializovan\u00fdmi t\u00e9maty, jako jsou pomocn\u00e9 kontakty a funkce vyp\u00ednac\u00ed spou\u0161t\u011b.<\/p>\n<h2>Kl\u00ed\u010dov\u00e9 parametry MCCB, kter\u00fdm byste m\u011bli rozum\u011bt<\/h2>\n<figure style=\"text-align: center;\"><img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-infographic-showing-key-MCCB-ratings-including-Icu-Ics-and-LSIG-trip-functions.webp\" alt=\"Technical infographic showing key MCCB ratings including Icu Ics and LSIG trip functions\" \/><figcaption><em>Komplexn\u00ed p\u0159ehled kritick\u00fdch parametr\u016f MCCB, podrobn\u011b popisuj\u00edc\u00ed vyp\u00ednac\u00ed schopnosti Icu, Ics a funkce elektronick\u00e9 vyp\u00ednac\u00ed charakteristiky.<\/em><\/figcaption><\/figure>\n<p>Jedn\u00edm z d\u016fvod\u016f, pro\u010d in\u017een\u00fd\u0159i p\u0159ech\u00e1zej\u00ed od jednoduch\u00fdch diskus\u00ed o jisti\u010d\u00edch ke specifick\u00e9mu obsahu MCCB, je to, \u017ee parametry za\u010d\u00ednaj\u00ed m\u00edt mnohem v\u011bt\u0161\u00ed v\u00fdznam.<\/p>\n<h3>Jmenovit\u00fd proud<\/h3>\n<p>Toto je proud, kter\u00fd m\u00e1 jisti\u010d v\u00e9st za definovan\u00fdch podm\u00ednek. Je to jedna z prvn\u00edch hodnot, na kter\u00e9 se lid\u00e9 d\u00edvaj\u00ed, ale nen\u00ed to jedin\u00e1, na kter\u00e9 z\u00e1le\u017e\u00ed.<\/p>\n<h3>Velikost r\u00e1mu<\/h3>\n<p>R\u00e1mec stanovuje fyzickou platformu jisti\u010de a proudovou ob\u00e1lku. V r\u00e1mci stejn\u00e9 r\u00e1mcov\u00e9 \u0159ady mohou existovat r\u016fzn\u00e1 nastaven\u00ed vyp\u00edn\u00e1n\u00ed.<\/p>\n<h3>Nap\u011bt\u00ed<\/h3>\n<p>Jisti\u010d mus\u00ed odpov\u00eddat nap\u011bt\u00ed syst\u00e9mu a kontextu aplikace, v\u010detn\u011b vhodnosti pro st\u0159\u00eddav\u00fd nebo stejnosm\u011brn\u00fd proud, kde je to relevantn\u00ed.<\/p>\n<h3>Po\u010det p\u00f3l\u016f<\/h3>\n<p>Mezi b\u011b\u017en\u00e9 konfigurace p\u00f3l\u016f pat\u0159\u00ed:<\/p>\n<ul>\n<li>2-p\u00f3lov\u00fd<\/li>\n<li>3-p\u00f3lov\u00fd<\/li>\n<li>4-p\u00f3lov\u00fd<\/li>\n<\/ul>\n<p>V\u00fdb\u011br po\u010dtu p\u00f3l\u016f z\u00e1vis\u00ed na architektu\u0159e syst\u00e9mu, po\u017eadavc\u00edch na sp\u00edn\u00e1n\u00ed vodi\u010d\u016f a zp\u016fsobu zpracov\u00e1n\u00ed neutr\u00e1lu.<\/p>\n<h3>P\u0159eru\u0161ovac\u00ed kapacita<\/h3>\n<p>Toto je jeden z nejd\u016fle\u017eit\u011bj\u0161\u00edch parametr\u016f MCCB. Jisti\u010d mus\u00ed b\u00fdt schopen p\u0159eru\u0161it potenci\u00e1ln\u00ed poruchov\u00fd proud dostupn\u00fd v m\u00edst\u011b instalace.<\/p>\n<p>Mezi kl\u00ed\u010dov\u00e9 term\u00edny \u010dasto pat\u0159\u00ed:<\/p>\n<ul>\n<li><code>Icu<\/code><\/li>\n<li><code>Ics<\/code><\/li>\n<\/ul>\n<p>Tyto parametry ovliv\u0148uj\u00ed, zda je jisti\u010d vhodn\u00fd pro skute\u010dnou \u00farove\u0148 poruchy a o\u010dek\u00e1v\u00e1n\u00ed provozu instalace.<\/p>\n<p>Pro c\u00edlen\u011bj\u0161\u00ed diskusi viz <a href=\"https:\/\/test.viox.com\/cs\/how-to-read-mccb-nameplates-for-electrical-safety\/\">Jak \u010d\u00edst \u0161t\u00edtky MCCB pro elektrickou bezpe\u010dnost<\/a>.<\/p>\n<h3>Typ spou\u0161t\u011bc\u00ed jednotky<\/h3>\n<p>Architektura vyp\u00ednac\u00ed jednotky siln\u011b ovliv\u0148uje:<\/p>\n<ul>\n<li>nastavitelnost<\/li>\n<li>koordinace<\/li>\n<li>opakovatelnost<\/li>\n<li>potenci\u00e1l monitorov\u00e1n\u00ed<\/li>\n<\/ul>\n<p>Proto by se pr\u016fvodce MCCB m\u011bl zm\u00ednit o typu vyp\u00ednac\u00ed jednotky i na z\u00e1kladn\u00ed \u00farovni.<\/p>\n<h2>B\u011b\u017en\u00e9 typy MCCB<\/h2>\n<p>Existuje n\u011bkolik u\u017eite\u010dn\u00fdch zp\u016fsob\u016f, jak klasifikovat MCCB. Praktick\u00fd pr\u016fvodce by m\u011bl udr\u017eovat taxonomii jednoduchou.<\/p>\n<h3>Podle technologie vyp\u00edn\u00e1n\u00ed<\/h3>\n<ul>\n<li>termomagnetick\u00fd MCCB<\/li>\n<li>elektronick\u00fd MCCB<\/li>\n<\/ul>\n<p>Toto je \u010dasto nejv\u00fdznamn\u011bj\u0161\u00ed klasifikace v re\u00e1ln\u00fdch projektech, proto\u017ee p\u0159\u00edmo ovliv\u0148uje nastaven\u00ed, p\u0159esnost a koordinaci. Jakmile syst\u00e9m vy\u017eaduje selektivn\u00ed koordinaci, p\u0159\u00edsn\u011bj\u0161\u00ed kontrolu nastaven\u00ed nebo pokro\u010dilej\u0161\u00ed logiku ochrany, konverzace se obvykle p\u0159esouv\u00e1 sm\u011brem k elektronick\u00fdm vyp\u00ednac\u00edm jednotk\u00e1m a jejich chov\u00e1n\u00ed TCC sp\u00ed\u0161e ne\u017e k jednoduch\u00e9mu v\u00fdb\u011bru jisti\u010de s pevn\u00fdm vyp\u00edn\u00e1n\u00edm.<\/p>\n<h3>Podle aplika\u010dn\u00edho zat\u00ed\u017een\u00ed<\/h3>\n<p>N\u011bkter\u00e9 MCCB jsou vyb\u00edr\u00e1ny pro p\u0159\u00edmou ochranu nap\u00e1je\u010de, zat\u00edmco jin\u00e9 jsou vyb\u00edr\u00e1ny, proto\u017ee aplikace vy\u017eaduje:<\/p>\n<ul>\n<li>vy\u0161\u0161\u00ed vyp\u00ednac\u00ed v\u00fdkon<\/li>\n<li>nastaviteln\u011bj\u0161\u00ed chov\u00e1n\u00ed vyp\u00edn\u00e1n\u00ed<\/li>\n<li>siln\u011bj\u0161\u00ed podporu koordinace<\/li>\n<li>integraci p\u0159\u00edslu\u0161enstv\u00ed<\/li>\n<\/ul>\n<h3>Podle mont\u00e1\u017ee a integrace do syst\u00e9mu<\/h3>\n<p>V z\u00e1vislosti na v\u00fdrobci a syst\u00e9mu mohou b\u00fdt MCCB integrov\u00e1ny do rozvad\u011b\u010d\u016f, sp\u00ednac\u00edch desek, sestav stroj\u016f nebo vyhrazen\u00fdch ochrann\u00fdch prostor\u016f.<\/p>\n<p>Pro v\u011bt\u0161inu \u010dten\u00e1\u0159\u016f nen\u00ed u\u017eite\u010dn\u00e1 ot\u00e1zka \u201cKolik typ\u016f MCCB existuje?\u201d, ale sp\u00ed\u0161e:<\/p>\n<p><strong>Kter\u00e1 technologie vyp\u00edn\u00e1n\u00ed, t\u0159\u00edda parametr\u016f a sada p\u0159\u00edslu\u0161enstv\u00ed vyhovuje m\u00e9 aplikaci?<\/strong><\/p>\n<h2>Kde se pou\u017e\u00edvaj\u00ed MCCB?<\/h2>\n<p>MCCB jsou \u0161iroce pou\u017e\u00edv\u00e1ny v n\u00edzkonap\u011b\u0165ov\u00fdch komer\u010dn\u00edch a pr\u016fmyslov\u00fdch syst\u00e9mech. Mezi typick\u00e9 aplikace pat\u0159\u00ed:<\/p>\n<ul>\n<li>hlavn\u00ed v\u00fdstupn\u00ed nap\u00e1je\u010de z n\u00edzkonap\u011b\u0165ov\u00e9ho rozvad\u011b\u010de<\/li>\n<li>d\u00edl\u010d\u00ed rozvody a nap\u00e1je\u010de panel\u016f<\/li>\n<li>nap\u00e1jec\u00ed obvody motor\u016f a stroj\u016f<\/li>\n<li>rozvody HVAC<\/li>\n<li>ochrana nap\u00e1je\u010de gener\u00e1toru<\/li>\n<li>rozvodn\u00e9 sestavy souvisej\u00edc\u00ed s p\u0159enosem<\/li>\n<li>v\u011bt\u0161\u00ed odbo\u010dn\u00e9 obvody, kde kapacita MCB nesta\u010d\u00ed<\/li>\n<\/ul>\n<p>To je jeden z d\u016fvod\u016f, pro\u010d <code>dotaz na mccb<\/code> m\u00e1 tendenci p\u0159itahovat sp\u00ed\u0161e in\u017een\u00fdry, v\u00fdrobce panel\u016f a n\u00e1kupn\u00ed t\u00fdmy ne\u017e b\u011b\u017en\u00e9 reziden\u010dn\u00ed u\u017eivatele. MCCB se obvykle objevuj\u00ed tam, kde je zat\u00ed\u017een\u00ed syst\u00e9mu vy\u0161\u0161\u00ed a d\u016fsledky \u0161patn\u00e9ho v\u00fdb\u011bru jsou v\u00e1\u017en\u011bj\u0161\u00ed.<\/p>\n<h2>MCCB vs MCB: Kr\u00e1tk\u00e9 praktick\u00e9 srovn\u00e1n\u00ed<\/h2>\n<p>Tato str\u00e1nka by m\u011bla vysv\u011btlit z\u00e1kladn\u00ed rozd\u00edl, ale nenahrazovat specializovanou str\u00e1nku s porovn\u00e1n\u00edm.<\/p>\n<table style=\"border-collapse: collapse; width: 100%; text-align: left;\" border=\"1\">\n<thead>\n<tr>\n<th style=\"padding: 8px;\">Funkce<\/th>\n<th style=\"padding: 8px;\">MCCB<\/th>\n<th style=\"padding: 8px;\">MCB<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\">Typick\u00e1 role<\/td>\n<td style=\"padding: 8px;\">Ji\u0161t\u011bn\u00ed p\u0159\u00edvod\u016f a v\u011btv\u00ed s vy\u0161\u0161\u00edm zat\u00ed\u017een\u00edm<\/td>\n<td style=\"padding: 8px;\">Men\u0161\u00ed koncov\u00e9 obvody<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Proudov\u00fd rozsah<\/td>\n<td style=\"padding: 8px;\">\u0160ir\u0161\u00ed a vy\u0161\u0161\u00ed<\/td>\n<td style=\"padding: 8px;\">Ni\u017e\u0161\u00ed a omezen\u011bj\u0161\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Vyp\u00ednac\u00ed schopnost<\/td>\n<td style=\"padding: 8px;\">Obecn\u011b vy\u0161\u0161\u00ed<\/td>\n<td style=\"padding: 8px;\">Obecn\u011b ni\u017e\u0161\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Flexibilita nastaven\u00ed vyp\u00ednac\u00ed charakteristiky<\/td>\n<td style=\"padding: 8px;\">\u010casto \u0161ir\u0161\u00ed<\/td>\n<td style=\"padding: 8px;\">Obvykle jednodu\u0161\u0161\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Aplikace<\/td>\n<td style=\"padding: 8px;\">Komer\u010dn\u00ed a pr\u016fmyslov\u00e9 rozvody<\/td>\n<td style=\"padding: 8px;\">Reziden\u010dn\u00ed a m\u00e9n\u011b zat\u00ed\u017een\u00e9 odbo\u010dn\u00e9 obvody<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Praktick\u00fd z\u00e1v\u011br je jednoduch\u00fd:<\/p>\n<ul>\n<li>zvolte <a href=\"https:\/\/test.viox.com\/cs\/mcb\/\">MCB<\/a> pro men\u0161\u00ed koncov\u00e9 obvody<\/li>\n<li>zvolte MCCB tam, kde \u00farove\u0148 zat\u00ed\u017een\u00ed, \u00farove\u0148 poruchy nebo flexibilita ji\u0161t\u011bn\u00ed p\u0159esahuje tento rozsah<\/li>\n<\/ul>\n<p>Pro specializovan\u00e9 porovn\u00e1n\u00ed viz <a href=\"https:\/\/test.viox.com\/cs\/mccb-vs-mcb\/\">MCCB vs MCB<\/a>.<\/p>\n<h2>Jak vybrat MCCB: Logika v\u00fdb\u011bru na vysok\u00e9 \u00farovni<\/h2>\n<p>Tato str\u00e1nka by m\u011bla \u010dten\u00e1\u0159\u016fm poskytnout r\u00e1mec a pot\u00e9 p\u0159edat podrobn\u00e9 dimenzov\u00e1n\u00ed specializovan\u00e9 p\u0159\u00edru\u010dce.<\/p>\n<p>Na vysok\u00e9 \u00farovni za\u010d\u00edn\u00e1 v\u00fdb\u011br MCCB s:<\/p>\n<ol>\n<li>Zat\u011b\u017eovac\u00ed proud<\/li>\n<li>syst\u00e9mov\u00e9 nap\u011bt\u00ed<\/li>\n<li>po\u010dtu p\u00f3l\u016f<\/li>\n<li>dostupn\u00fd zkratov\u00fd proud<\/li>\n<li>po\u017eadovan\u00e1 vyp\u00ednac\u00ed schopnost<\/li>\n<li>typ vyp\u00ednac\u00ed jednotky<\/li>\n<li>po\u017eadavky na p\u0159\u00edslu\u0161enstv\u00ed a ovl\u00e1d\u00e1n\u00ed<\/li>\n<li>koordinaci se za\u0159\u00edzen\u00edmi proti proudu a po proudu<\/li>\n<\/ol>\n<p>To sta\u010d\u00ed pro str\u00e1nku se z\u00e1klady.<br \/>\nPokud \u010dten\u00e1\u0159 ji\u017e dimenzuje skute\u010dn\u00fd panel, m\u011bl by se pono\u0159it hloub\u011bji do specializovan\u00e9 p\u0159\u00edru\u010dky: <a href=\"https:\/\/test.viox.com\/cs\/how-to-select-an-mccb-for-a-panel\/\">Jak vybrat MCCB pro panel<\/a>.<\/p>\n<h2>Z\u00e1klady instalace, \u00fadr\u017eby a testov\u00e1n\u00ed<\/h2>\n<p>S MCCB se \u010dasto zach\u00e1z\u00ed jako s odoln\u00fdmi za\u0159\u00edzen\u00edmi s n\u00edzk\u00fdmi n\u00e1roky na \u00fadr\u017ebu, ale to by se nem\u011blo zam\u011b\u0148ovat s \u201cignorovat je nav\u017edy\u201d.\u201d<\/p>\n<p>Na z\u00e1kladn\u00ed \u00farovni spr\u00e1vn\u00e1 praxe zahrnuje:<\/p>\n<ul>\n<li>spr\u00e1vn\u00e9 p\u00e1rov\u00e1n\u00ed vodi\u010d\u016f a svorek<\/li>\n<li>spr\u00e1vn\u00e9 pou\u017eit\u00ed to\u010div\u00e9ho momentu<\/li>\n<li>term\u00e1ln\u00ed kontrola zat\u00ed\u017een\u00fdch spoj\u016f<\/li>\n<li>vizu\u00e1ln\u00ed kontrola po\u0161kozen\u00ed nebo p\u0159eh\u0159\u00e1t\u00ed<\/li>\n<li>pravideln\u00e9 funk\u010dn\u00ed kontroly odpov\u00eddaj\u00edc\u00ed instalaci<\/li>\n<\/ul>\n<p>U jisti\u010d\u016f s elektronick\u00fdmi vyp\u00ednac\u00edmi jednotkami m\u016f\u017ee testov\u00e1n\u00ed a ov\u011b\u0159ov\u00e1n\u00ed p\u0159esahovat jednoduchou mechanickou kontrolu. Spr\u00e1vn\u00fd pl\u00e1n \u00fadr\u017eby z\u00e1vis\u00ed na:<\/p>\n<ul>\n<li>zat\u00ed\u017een\u00ed jisti\u010de<\/li>\n<li>historie poruch<\/li>\n<li>kriti\u010dnost syst\u00e9mu<\/li>\n<li>pokyny v\u00fdrobce<\/li>\n<\/ul>\n<p>Tato p\u0159\u00edru\u010dka pouze pot\u0159ebuje stanovit, \u017ee testov\u00e1n\u00ed je d\u016fle\u017eit\u00e9. Nemus\u00ed se st\u00e1t specializovanou str\u00e1nkou pro testov\u00e1n\u00ed.<\/p>\n<h2>B\u011b\u017en\u00e9 chyby, kter\u00e9 lid\u00e9 d\u011blaj\u00ed s MCCB<\/h2>\n<h3>1. Pova\u017eov\u00e1n\u00ed jmenovit\u00e9ho proudu za jedin\u00fd faktor v\u00fdb\u011bru<\/h3>\n<p>Jmenovit\u00fd proud je d\u016fle\u017eit\u00fd, ale MCCB m\u016f\u017ee b\u00fdt st\u00e1le \u0161patn\u00fd, pokud je vyp\u00ednac\u00ed schopnost, typ vyp\u00ednac\u00ed jednotky nebo koordinace nevhodn\u00e1.<\/p>\n<h3>2. Pou\u017e\u00edv\u00e1n\u00ed MCCB tam, kde by sta\u010dil MCB<\/h3>\n<p>Nadm\u011brn\u00e1 specifikace ji\u0161t\u011bn\u00ed m\u016f\u017ee pl\u00fdtvat rozpo\u010dtem a prostorem bez p\u0159id\u00e1n\u00ed skute\u010dn\u00e9 hodnoty.<\/p>\n<h3>3. Pou\u017e\u00edv\u00e1n\u00ed MCB tam, kde je vy\u017eadov\u00e1n MCCB<\/h3>\n<p>Toto je opa\u010dn\u00e1 chyba a \u010dasto nebezpe\u010dn\u011bj\u0161\u00ed. Vy\u0161\u0161\u00ed poruchov\u00e9 zat\u00ed\u017een\u00ed, v\u011bt\u0161\u00ed p\u0159\u00edvody a n\u00e1ro\u010dn\u011bj\u0161\u00ed aplikace \u010dasto vy\u017eaduj\u00ed ji\u0161t\u011bn\u00ed na \u00farovni MCCB.<\/p>\n<h3>4. Ignorov\u00e1n\u00ed technologie vyp\u00ednac\u00ed jednotky<\/h3>\n<p>Volba vyp\u00ednac\u00ed jednotky ovliv\u0148uje nejen v\u00fdkon ji\u0161t\u011bn\u00ed, ale tak\u00e9 nastavitelnost a selektivitu.<\/p>\n<h3>5. P\u0159eskakov\u00e1n\u00ed kontroly \u0161t\u00edtku<\/h3>\n<p>Mnoho chyb p\u0159i v\u00fdb\u011bru se stane, proto\u017ee \u0161t\u00edtek jisti\u010de nen\u00ed pln\u011b pochopen. Vyp\u00ednac\u00ed schopnost, r\u00e1m a detaily vyp\u00edn\u00e1n\u00ed jsou d\u016fle\u017eit\u00e9.<\/p>\n<h2>\u010casto Kladen\u00e9 Ot\u00e1zky<\/h2>\n<h3>Co je to jisti\u010d v lisovan\u00e9m pouzd\u0159e?<\/h3>\n<p>Jisti\u010d v lisovan\u00e9m pouzd\u0159e je n\u00edzkonap\u011b\u0165ov\u00e9 nadproudov\u00e9 ochrann\u00e9 za\u0159\u00edzen\u00ed uzav\u0159en\u00e9 v lisovan\u00e9m izola\u010dn\u00edm pouzd\u0159e. Pou\u017e\u00edv\u00e1 se pro ochranu p\u0159\u00edvod\u016f a n\u00e1ro\u010dn\u011bj\u0161\u00edch odbo\u010dek, kde \u00farove\u0148 proudu, zkratov\u00e1 odolnost nebo flexibilita vyp\u00edn\u00e1n\u00ed p\u0159esahuj\u00ed praktick\u00fd rozsah miniaturn\u00edho jisti\u010de.<\/p>\n<h3>Jak\u00fd je rozd\u00edl mezi MCCB a MCB?<\/h3>\n<p>MCCB se obecn\u011b pou\u017e\u00edvaj\u00ed pro v\u011bt\u0161\u00ed obvody, vy\u0161\u0161\u00ed poruchov\u00e9 proudy a n\u00e1ro\u010dn\u011bj\u0161\u00ed ochrann\u00e9 funkce, zat\u00edmco MCB se obvykle pou\u017e\u00edvaj\u00ed pro men\u0161\u00ed koncov\u00e9 obvody s jednodu\u0161\u0161\u00edmi po\u017eadavky na ochranu.<\/p>\n<h3>Co je uvnit\u0159 MCCB?<\/h3>\n<p>Typick\u00fd MCCB obsahuje lisovan\u00e9 izola\u010dn\u00ed pouzdro, pevn\u00e9 a pohybliv\u00e9 kontakty, ovl\u00e1dac\u00ed mechanismus, vyp\u00ednac\u00ed jednotku, prvky pro zh\u00e1\u0161en\u00ed oblouku, svorky a \u010dasto voliteln\u00e9 p\u0159\u00edslu\u0161enstv\u00ed, jako jsou pomocn\u00e9 kontakty nebo vyp\u00ednac\u00ed c\u00edvky.<\/p>\n<h3>Kde se pou\u017e\u00edvaj\u00ed MCCB?<\/h3>\n<p>MCCB se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v n\u00edzkonap\u011b\u0165ov\u00fdch komer\u010dn\u00edch a pr\u016fmyslov\u00fdch distribu\u010dn\u00edch syst\u00e9mech, v\u010detn\u011b nap\u00e1je\u010d\u016f, obvod\u016f stroj\u016f, podru\u017en\u00fdch rozvad\u011b\u010d\u016f a v\u011bt\u0161\u00edch odbo\u010dn\u00fdch obvod\u016f.<\/p>\n<h3>Co znamenaj\u00ed Icu a Ics na MCCB?<\/h3>\n<p>Jedn\u00e1 se o jmenovit\u00e9 hodnoty souvisej\u00edc\u00ed se zkratovou odolnost\u00ed, kter\u00e9 pom\u00e1haj\u00ed ur\u010dit, zda je jisti\u010d vhodn\u00fd pro dostupn\u00fd zkratov\u00fd proud a o\u010dek\u00e1van\u00e9 provozn\u00ed podm\u00ednky v dan\u00e9m syst\u00e9mu.<\/p>\n<h3>Je ka\u017ed\u00fd MCCB elektronick\u00fd?<\/h3>\n<p>MCCB mohou vyu\u017e\u00edvat tepeln\u011b-magnetickou nebo elektronickou vyp\u00ednac\u00ed technologii, v z\u00e1vislosti na aplikaci a produktov\u00e9 \u0159ad\u011b.<\/p>\n<h3>Jak m\u00e1m vybrat spr\u00e1vn\u00fd MCCB?<\/h3>\n<p>Jisti\u010d MCCB zvol\u00edte spr\u00e1vn\u011b tak, \u017ee slad\u00edte proud, nap\u011bt\u00ed, po\u010det p\u00f3l\u016f, dostupnou \u00farove\u0148 poruchov\u00e9ho proudu, vyp\u00ednac\u00ed schopnost, typ spou\u0161t\u011b a po\u017eadavky na koordinaci instalace.<\/p>\n<h2>Z\u00e1v\u011br<\/h2>\n<p>Pokud chcete nejjasn\u011bj\u0161\u00ed odpov\u011b\u010f na <code>co je to lisovan\u00fd jisti\u010d<\/code>, je to toto:<\/p>\n<p><strong>MCCB je n\u00edzkonap\u011b\u0165ov\u00fd jisti\u010d pro p\u0159\u00edvody a odbo\u010dn\u00e9 obvody s vy\u0161\u0161\u00edm zat\u00ed\u017een\u00edm, kde \u00farove\u0148 proudu, \u00farove\u0148 poruchy nebo flexibilita vyp\u00edn\u00e1n\u00ed p\u0159esahuje norm\u00e1ln\u00ed pracovn\u00ed rozsah miniaturn\u00edho jisti\u010de.<\/strong><\/p>\n<p>To je tak\u00e9 d\u016fvod, pro\u010d by tato str\u00e1nka m\u011bla existovat odd\u011blen\u011b od:<\/p>\n<ul>\n<li>hlavn\u00ed <a href=\"https:\/\/test.viox.com\/cs\/mccb\/\">Str\u00e1nka produktu MCCB<\/a><\/li>\n<li>hlavn\u00ed <a href=\"https:\/\/test.viox.com\/cs\/mccb-vs-mcb\/\">Str\u00e1nka s porovn\u00e1n\u00edm MCCB vs MCB<\/a><\/li>\n<li>hlavn\u00ed <a href=\"https:\/\/test.viox.com\/cs\/how-to-select-an-mccb-for-a-panel\/\">pr\u016fvodce v\u00fdb\u011brem MCCB<\/a><\/li>\n<li>hlavn\u00ed <a href=\"https:\/\/test.viox.com\/cs\/mccb-full-form-molded-case-circuit-breaker\/\">Str\u00e1nka s \u00fapln\u00fdm zn\u011bn\u00edm zkratky MCCB<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<\/div>\n<div class=\"simg-pop-btn\" style=\"top: 5915.77px; left: 54.0078px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 5915.77px; left: 54.0078px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 79.8281px; left: 54.0078px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 79.8281px; left: 54.0078px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 79.8281px; left: 54.0078px; display: none;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Direct Answer A heavy-duty molded case circuit breaker (MCCB) safely installed within a low-voltage industrial distribution panel, ready to protect distribution equipment. A molded case circuit breaker (MCCB) is a low-voltage circuit breaker used to protect feeders, larger branch circuits, machinery supplies, and distribution equipment against overloads and short circuits. Compared with a smaller MCB, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7121,"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-7120","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\/7120","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=7120"}],"version-history":[{"count":4,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/7120\/revisions"}],"predecessor-version":[{"id":23291,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/7120\/revisions\/23291"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/media\/7121"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/media?parent=7120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/categories?post=7120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/tags?post=7120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}