{"id":9626,"date":"2026-07-10T08:52:16","date_gmt":"2026-07-10T08:52:16","guid":{"rendered":"https:\/\/www.oohmage.com\/?p=9626"},"modified":"2026-08-25T03:03:34","modified_gmt":"2026-08-25T03:03:34","slug":"mccb-ka-rating","status":"publish","type":"post","link":"https:\/\/www.oohmage.com\/tr\/mccb-ka-rating\/","title":{"rendered":"MCCB kA De\u011feri: Sat\u0131n Almadan \u00d6nce Do\u011fru Kesme Kapasitesini Nas\u0131l Se\u00e7melisiniz?"},"content":{"rendered":"<h2 id=\"introduction\" class=\"wp-block-heading\">Giri\u015f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-ka-rating-refers-to-the-maximum-short-circuit-current-that-a-circuit-breaker-can-safely-interrupt-under-specified-conditions-for-mccb-this-value-constitutes-a-part-of-its-interrupting-capacity-rather-than-its-normal-rated-operating-current-choosing-the-correct-ka-rating-helps-to-prevent-the-circuit-breaker-from-malfunctioning-when-the-fault-current-exceeds-the-limit-that-the-equipment-can-clear\">kA de\u011feri, bir devre kesicinin belirli ko\u015fullar alt\u0131nda g\u00fcvenli bir \u015fekilde kesebilece\u011fi maksimum k\u0131sa devre ak\u0131m\u0131n\u0131 ifade eder. \u00d6rne\u011fin, <a href=\"https:\/\/www.oohmage.com\/tr\/molded-case-circuit-breaker\/\" data-type=\"link\" data-id=\"https:\/\/www.oohmage.com\/molded-case-circuit-breaker\/\">MCCB<\/a>, bu de\u011fer, normal nominal \u00e7al\u0131\u015fma ak\u0131m\u0131ndan ziyade kesme kapasitesinin bir par\u00e7as\u0131n\u0131 olu\u015fturur. Do\u011fru kA de\u011ferinin se\u00e7ilmesi, ar\u0131za ak\u0131m\u0131 ekipman\u0131n ortadan kald\u0131rabilece\u011fi s\u0131n\u0131r\u0131 a\u015ft\u0131\u011f\u0131nda devre kesicinin ar\u0131zalanmas\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"for-the-purchasers-who-are-comparing-the-options-of-mccb-the-ka-rating-is-one-of-the-most-important-technical-details-that-need-to-be-confirmed-before-making-a-quotation-a-circuit-breaker-may-have-the-correct-rated-current-pole-configuration-and-physical-size-but-if-its-interrupting-capacity-is-lower-than-the-expected-short-circuit-current-at-the-installation-point-it-may-still-not-be-applicable\">MCCB se\u00e7eneklerini kar\u015f\u0131la\u015ft\u0131ran al\u0131c\u0131lar i\u00e7in, kA de\u011feri, fiyat teklifi vermeden \u00f6nce teyit edilmesi gereken en \u00f6nemli teknik detaylardan biridir. Bir devre kesici, do\u011fru nominal ak\u0131ma, kutup konfig\u00fcrasyonuna ve fiziksel boyuta sahip olabilir; ancak kesme kapasitesi, kurulum noktas\u0131nda beklenen k\u0131sa devre ak\u0131m\u0131ndan d\u00fc\u015f\u00fckse, yine de uygun olmayabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"this-guide-uses-practical-procurement-language-to-explain-the-ka-rating-value-as-well-as-parameters-such-as-icu-ics-icm-and-icw-it-is-aimed-at-electrical-procurement-personnel-cabinet-manufacturers-and-installers-engineers-and-procurement-teams-helping-them-discuss-the-selection-of-mccb-more-clearly-before-referring-to-the-final-specification-sheet-and-project-technical-specifications\">Bu k\u0131lavuz, kA nominal de\u011feri ile Icu, Ics, Icm ve Icw gibi parametreleri a\u00e7\u0131klamak i\u00e7in pratik tedarik terminolojisini kullanmaktad\u0131r. Elektrik tedarik personeli, kabin \u00fcreticileri ve montajc\u0131lar\u0131, m\u00fchendisler ve tedarik ekiplerine y\u00f6nelik olarak haz\u0131rlanm\u0131\u015f olup, bu ki\u015filerin nihai teknik \u00f6zellik belgesine ve proje teknik \u015fartnamelerine ba\u015fvurmadan \u00f6nce MCCB se\u00e7imini daha net bir \u015fekilde tart\u0131\u015fmalar\u0131na yard\u0131mc\u0131 olmay\u0131 ama\u00e7lamaktad\u0131r.<\/p>\n\n\n\n<h2 id=\"what-is-ka-rating-on-a-circuit-breaker\" class=\"wp-block-heading\">Bir devre kesicideki kA de\u011feri nedir?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bir devre kesicideki \u201ckA\u201d de\u011feri, kesme kapasitesini veya kesme yetene\u011fini ifade eder. \u201ckA\u201d harfi kiloamper anlam\u0131na gelir; dolay\u0131s\u0131yla 1 kA, 1.000 amper\u2019e e\u015fittir. Bir devre kesicinin nominal de\u011feri 10 kA ise, bu, s\u00f6z konusu cihaz\u0131n belirtilen testler ve uygulamalar kapsam\u0131nda 10.000 ampere kadar k\u0131sa devre ak\u0131m\u0131n\u0131 kesebilecek \u015fekilde tasarland\u0131\u011f\u0131 anlam\u0131na gelir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bu nominal de\u011ferin \u00f6nemli olmas\u0131n\u0131n nedeni, k\u0131sa devre ak\u0131m\u0131n\u0131n normal y\u00fck ak\u0131m\u0131ndan \u00e7ok farkl\u0131 olmas\u0131d\u0131r. Bir da\u011f\u0131t\u0131m besleme hatt\u0131, normal \u00e7al\u0131\u015fma s\u0131ras\u0131nda 100 A, 250 A veya 400 A ak\u0131m ta\u015f\u0131yabilir, ancak bir k\u0131sa devre durumunda, k\u0131sa bir s\u00fcre i\u00e7inde binlerce hatta on binlerce amperlik ak\u0131mlar \u00fcretir. Devre kesici, da\u011f\u0131t\u0131m panosunda kopma, kontak kayna\u015fmas\u0131 veya a\u015f\u0131r\u0131 hasara neden olmadan devreyi kesebilmelidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"in-the-actual-procurement-discussions-the-ka-rating-answers-a-core-question-if-this-distribution-panel-experiences-a-severe-failure-will-the-selected-circuit-breaker-be-able-to-safely-clear-the-fault-current-this-is-why-the-same-rated-current-level-may-be-equipped-with-different-breaking-capacity-levels\">Ger\u00e7ek tedarik g\u00f6r\u00fc\u015fmelerinde, kA de\u011feri temel bir sorunun yan\u0131t\u0131n\u0131 verir: Bu da\u011f\u0131t\u0131m panosunda ciddi bir ar\u0131za meydana gelirse, se\u00e7ilen devre kesici ar\u0131za ak\u0131m\u0131n\u0131 g\u00fcvenli bir \u015fekilde kesebilecek mi? \u0130\u015fte bu nedenle, ayn\u0131 nominal ak\u0131m seviyesine sahip devre kesiciler farkl\u0131 kesme kapasitelerine sahip olabilir.<\/p>\n\n\n\n<h2 id=\"ka-rating-vs-rated-current-why-100a-does-not-mean-100-ka\" class=\"wp-block-heading\">kA De\u011feri ve Anma Ak\u0131m\u0131: Neden 100 A, 100 kA Anlam\u0131na Gelmez?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bir\u00e7ok ki\u015fi, nominal ak\u0131m (A) ile kA nominal de\u011ferini ayn\u0131 \u015fey olarak de\u011ferlendirerek bir hata yapma e\u011filimindedir. Oysa bunlar tamamen farkl\u0131 kavramlard\u0131r. Anma ak\u0131m\u0131, bu devre kesicinin normal \u00e7al\u0131\u015fma ko\u015fullar\u0131 alt\u0131nda uzun s\u00fcre dayanabilece\u011fi maksimum ak\u0131m\u0131 ifade ederken; kA anma de\u011feri ise k\u0131sa devre durumunda g\u00fcvenli bir \u015fekilde kesebilece\u011fi maksimum ak\u0131m\u0131 g\u00f6sterir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6rne\u011fin: 100 A\u2019l\u0131k bir MCCB\u2019nin kesme kapasitesinin 100 kA oldu\u011fu anlam\u0131na gelmez. 100 A, yaln\u0131zca ilgili devrenin normal ak\u0131m\u0131n\u0131n yakla\u015f\u0131k 100 A oldu\u011funu g\u00f6sterir. Ger\u00e7ekte ne kadar y\u00fcksek bir k\u0131sa devre ak\u0131m\u0131n\u0131 kesebilece\u011fi ise \u00fcr\u00fcn serisine, kullan\u0131m ortam\u0131na, kurulum y\u00f6ntemine ve kapasite d\u00fc\u015f\u00fcrme gerekip gerekmedi\u011fine ba\u011fl\u0131d\u0131r. Bu de\u011fer 10 kA, 25 kA, 36 kA, 50 kA veya ba\u015fka de\u011ferler olabilir ve tamamen belirli modele ve \u00e7al\u0131\u015fma gerilimine ba\u011fl\u0131d\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><div class=\"table-wrap\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>De\u011ferlendirme \u00f6\u011fesi<\/strong><\/td><td><strong>Neyi anlat\u0131yor?<\/strong><\/td><td><strong>Al\u0131c\u0131lar bunu nas\u0131l kullanmal\u0131d\u0131r?<\/strong><\/td><\/tr><tr><td>Anma ak\u0131m\u0131 (In)<\/td><td>Kesicinin belirli ko\u015fullar alt\u0131nda ta\u015f\u0131yabilece\u011fi s\u00fcrekli ak\u0131m.<\/td><td>Bunu y\u00fck ak\u0131m\u0131, kablo kapasitesi, panolun tasar\u0131m\u0131 ve koruma gereksinimlerine g\u00f6re ayarlay\u0131n.<\/td><\/tr><tr><td>kA de\u011feri \/ kesme kapasitesi<\/td><td>Kesicinin g\u00fcvenli bir \u015fekilde kesebilece\u011fi maksimum k\u0131sa devre ak\u0131m\u0131.<\/td><td>Tesisat noktas\u0131nda mevcut ar\u0131za ak\u0131m\u0131ndan daha d\u00fc\u015f\u00fck olmad\u0131\u011f\u0131ndan emin olun.<\/td><\/tr><tr><td>Anma gerilimi (Ue)<\/td><td>Kesicinin teknik \u00f6zelliklerinin ge\u00e7erli oldu\u011fu \u00e7al\u0131\u015fma gerilimi seviyesi.<\/td><td>Kesme kapasitesi gerilime g\u00f6re de\u011fi\u015fiklik g\u00f6sterebilece\u011finden, kA kapasitesini do\u011fru gerilimde kontrol edin.<\/td><\/tr><tr><td>Direk d\u00fczeni<\/td><td>3P veya 4P gibi korunan veya anahtarlanan iletkenlerin say\u0131s\u0131.<\/td><td>Elektrik sistemine, n\u00f6tr kablo gereksinimlerine ve panonun tasar\u0131m\u0131na uygun olarak se\u00e7in.<\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"this-difference-is-particularly-crucial-for-cabinet-manufacturing-plants-complete-equipment-factories-the-two-circuit-breakers-may-look-similar-and-have-the-same-rated-current-but-one-of-them-has-a-lower-breaking-capacity-if-the-circuit-breaker-with-the-lower-breaking-capacity-is-used-in-a-place-with-high-short-circuit-current-it-would-be-a-serious-selection-error-with-significant-potential-problems\">Bu fark, \u00f6zellikle kabin imalat tesisleri (komple ekipman fabrikalar\u0131) i\u00e7in hayati \u00f6nem ta\u015f\u0131maktad\u0131r. \u0130ki devre kesici birbirine benziyor ve ayn\u0131 nominal ak\u0131ma sahip olabilir, ancak bunlardan birinin kesme kapasitesi daha d\u00fc\u015f\u00fckt\u00fcr. Kesme kapasitesi daha d\u00fc\u015f\u00fck olan devre kesici, y\u00fcksek k\u0131sa devre ak\u0131m\u0131 bulunan bir yerde kullan\u0131l\u0131rsa, bu durum ciddi bir se\u00e7im hatas\u0131 olur ve \u00f6nemli sorunlara yol a\u00e7abilir.<\/p>\n\n\n\n<h2 id=\"what-does-ka-rating-mean-for-mccb-selection\" class=\"wp-block-heading\">MCCB Se\u00e7imi A\u00e7\u0131s\u0131ndan kA De\u011feri Ne Anlama Gelir?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MCCB i\u00e7in kA de\u011feri, temel koruma karar\u0131n\u0131n bir par\u00e7as\u0131d\u0131r. Kal\u0131pl\u0131 g\u00f6vdeli devre kesiciler, di\u011fer uygulamalar\u0131n yan\u0131 s\u0131ra genellikle al\u00e7ak gerilim da\u011f\u0131t\u0131m panolar\u0131nda, besleme devrelerinde, motor devrelerinde, jenerat\u00f6r \u00e7\u0131k\u0131\u015flar\u0131nda, fotovoltaik sistemlerde ve end\u00fcstriyel y\u00fcklerde kullan\u0131l\u0131r. Bu uygulamalarda devre kesici, hem normal \u00e7al\u0131\u015fma ak\u0131mlar\u0131n\u0131 hem de anormal k\u0131sa devre ak\u0131mlar\u0131n\u0131 kald\u0131rabilmelidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bir devre kesici se\u00e7erken g\u00f6z \u00f6n\u00fcnde bulundurulmas\u0131 gereken en temel ilke, se\u00e7ilen MCCB\u2019nin kesme kapasitesinin, kurulum noktas\u0131nda beklenen k\u0131sa devre ak\u0131m\u0131ndan b\u00fcy\u00fck veya ona e\u015fit olmas\u0131 gerekti\u011fidir. Beklenen k\u0131sa devre ak\u0131m\u0131n\u0131n b\u00fcy\u00fckl\u00fc\u011f\u00fc, transformat\u00f6r kapasitesi, transformat\u00f6r empedans\u0131, kablo uzunlu\u011fu, yukar\u0131 ak\u0131\u015ftaki elektrik \u015febekesinin k\u0131sa devre kapasitesi, jenerat\u00f6r ve motorlardan gelen geri besleme katk\u0131lar\u0131 ve sistemdeki da\u011f\u0131t\u0131m panosunun spesifik konumu gibi bir\u00e7ok fakt\u00f6rden etkilenir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6rne\u011fin: Transformat\u00f6r\u00fcn yan\u0131na veya ana da\u011f\u0131t\u0131m panosunun yak\u0131n\u0131na monte edilmi\u015f bir devre kesicinin maruz kalabilece\u011fi k\u0131sa devre ak\u0131m\u0131, genellikle uzun bir kablodan ge\u00e7tikten sonra devreye dahil edilen bir devre kesicinin maruz kalaca\u011f\u0131 ak\u0131mdan \u00e7ok daha b\u00fcy\u00fckt\u00fcr. Bu nedenle, t\u00fcm projeler i\u00e7in ge\u00e7erli olacak evrensel bir kA de\u011feri \u00f6nerilemez. Do\u011fru nominal de\u011fer, kalifiye elektrik uzmanlar\u0131 taraf\u0131ndan hesaplanmal\u0131 veya teyit edilmeli ve ard\u0131ndan MCCB'nin teknik \u00f6zelliklerine g\u00f6re se\u00e7ilmelidir.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img data-srcset=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-9.png 384w, https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-9-300x241.png 300w\" fetchpriority=\"high\" decoding=\"async\"   data-src=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-9.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-9632 lazyload\" style=\"aspect-ratio:1.246765765308711;width:519px;height:auto\"  sizes=\"(max-width: 384px) 100vw, 384px\" \/><noscript><img decoding=\"async\" width=\"384\" height=\"308\" src=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-9.png\" alt=\"\" class=\"wp-image-9632\" style=\"aspect-ratio:1.246765765308711;width:519px;height:auto\" srcset=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-9.png 384w, https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-9-300x241.png 300w\" sizes=\"(max-width: 384px) 100vw, 384px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"when-making-the-selection-other-details-also-need-to-be-considered-simultaneously-the-enclosure-class-trip-rated-current-trip-device-type-pole-number-rated-voltage-accessories-and-installation-environment-all-affect-the-final-mccb-selection-the-ka-rated-value-is-indeed-crucial-but-it-is-not-the-only-factor-to-be-taken-into-account\">Se\u00e7im yap\u0131l\u0131rken, di\u011fer ayr\u0131nt\u0131lar da ayn\u0131 anda g\u00f6z \u00f6n\u00fcnde bulundurulmal\u0131d\u0131r. Muhafaza s\u0131n\u0131f\u0131, kesme nominal ak\u0131m\u0131, kesme cihaz\u0131 t\u00fcr\u00fc, kutup say\u0131s\u0131, nominal gerilim, aksesuarlar ve kurulum ortam\u0131, nihai MCCB se\u00e7imini etkileyen fakt\u00f6rlerdir. KA nominal de\u011feri ger\u00e7ekten \u00e7ok \u00f6nemlidir, ancak dikkate al\u0131nmas\u0131 gereken tek fakt\u00f6r bu de\u011fildir.<\/p>\n\n\n\n<h2 id=\"icu-vs-ics-in-mccb-the-difference-buyers-should-know\" class=\"wp-block-heading\">MCCB\u2019de Icu ve Ics: Al\u0131c\u0131lar\u0131n Bilmesi Gereken Farklar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sat\u0131n alma personeli, MCCB\u2019nin kesme kapasitesini de\u011ferlendirirken, teknik \u00f6zellik belgelerinde s\u0131kl\u0131kla Icu ve Ics gibi terimlerle kar\u015f\u0131la\u015f\u0131r. Bu parametreler, devre kesicinin b\u00fcy\u00fck k\u0131sa devre ak\u0131mlar\u0131na maruz kald\u0131\u011f\u0131 durumdaki performans\u0131n\u0131 tan\u0131mlamak i\u00e7in kullan\u0131l\u0131r. Bu terimler, katalogda sadece s\u00fcs olarak yer alan kelimeler olarak g\u00f6r\u00fclmemelidir; bu devre kesicinin ger\u00e7ek g\u00fc\u00e7 da\u011f\u0131t\u0131m sisteminde g\u00fcvenli bir \u015fekilde kullan\u0131l\u0131p kullan\u0131lamayaca\u011f\u0131n\u0131 do\u011frudan etkiler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ICU genellikle nihai k\u0131sa devre kesme kapasitesini ifade eder. Bu de\u011fer, bir devre kesicinin belirtilen test ko\u015fullar\u0131 alt\u0131nda kesebilece\u011fi maksimum k\u0131sa devre ak\u0131m\u0131 de\u011ferini g\u00f6sterir. Ancak, bu kesme i\u015fleminin tamamlanmas\u0131n\u0131n ard\u0131ndan, \u00fcr\u00fcn standartlar\u0131 ve test prosed\u00fcrlerine g\u00f6re devre kesici art\u0131k normal \u015fekilde \u00e7al\u0131\u015famayabilir ve incelenmesi veya de\u011fi\u015ftirilmesi gerekebilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ics, k\u0131sa devre kesme kapasitesini ifade eder. Bu de\u011fer, devre kesicinin s\u00f6z konusu seviyedeki k\u0131sa devre ak\u0131m\u0131n\u0131 kesti\u011fi halde h\u00e2l\u00e2 normal \u015fekilde \u00e7al\u0131\u015fabilece\u011fi ak\u0131m de\u011ferini temsil eder. Ics, \u00fcr\u00fcn tasar\u0131m\u0131na ve standartlara ba\u011fl\u0131 olarak genellikle Icu'nun y\u00fczdesi olarak ifade edilir (\u00f6rne\u011fin 50%, 75% veya 100%). Kesin de\u011fer, se\u00e7ilen MCCB'nin teknik \u00f6zelliklerinden teyit edilmelidir.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><div class=\"table-wrap\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>D\u00f6nem<\/strong><\/td><td><strong>Genel anlam\u0131<\/strong><\/td><td><strong>MCCB al\u0131c\u0131lar\u0131 i\u00e7in pratik \u00f6nemi<\/strong><\/td><\/tr><tr><td>Yo\u011fun Bak\u0131m \u00dcnitesi<\/td><td>En y\u00fcksek k\u0131sa devre kesme kapasitesi.<\/td><td>Kesicinin belirtilen ko\u015fullar alt\u0131nda kesebilece\u011fi maksimum ar\u0131za ak\u0131m\u0131n\u0131 g\u00f6sterir. De\u011feri do\u011fru gerilimde do\u011frulay\u0131n.<\/td><\/tr><tr><td>Ics<\/td><td>Hizmet devre kesme kapasitesi.<\/td><td>Tan\u0131mlanm\u0131\u015f ko\u015fullar alt\u0131nda hizmetin kesintisiz s\u00fcrd\u00fcr\u00fclebilme kapasitesiyle ili\u015fkili kesinti seviyesini g\u00f6sterir. Daha y\u00fcksek Ics de\u011ferleri, kritik paneller i\u00e7in \u00f6nemli olabilir.<\/td><\/tr><tr><td>Icm<\/td><td>K\u0131sa devre olu\u015fturma kapasitesi.<\/td><td>Kesicinin, belirtilen k\u0131sa devre ko\u015fullar\u0131 alt\u0131nda sa\u011flayabilece\u011fi tepe ak\u0131m\u0131 ifade eder. Bu de\u011fer, elektrodinamik gerilme ile ilgilidir.<\/td><\/tr><tr><td>Icw<\/td><td>K\u0131sa s\u00fcreli dayan\u0131m ak\u0131m\u0131.<\/td><td>Cihaz\u0131n k\u0131sa bir s\u00fcre i\u00e7in dayanabilece\u011fi ak\u0131m\u0131 belirtir. Bu \u00f6zellik, se\u00e7ici sistemlerde ve baz\u0131 hava devre kesici uygulamalar\u0131nda daha s\u0131k \u00f6ne \u00e7\u0131kar.<\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Genel kesinti kapasitesi terimlerine ili\u015fkin daha ayr\u0131nt\u0131l\u0131 bir a\u00e7\u0131klama i\u00e7in, OOHMAGE\u2019nin \u015fu konudaki destek makalesine bak\u0131n\u0131z: <a href=\"https:\/\/www.oohmage.com\/tr\/breaking-capacity-of-circuit-breaker\/\"><u>devre kesicinin kesme kapasitesi<\/u><\/a>. Bu sayfay\u0131 referans olarak kullan\u0131n, ard\u0131ndan se\u00e7ilen MCCB serisinden nihai derecelendirmeyi teyit edin.<\/p>\n\n\n\n<h2 id=\"common-ka-ratings-for-mcb-mccb-and-acb\" class=\"wp-block-heading\">MCB, MCCB ve ACB i\u00e7in Yayg\u0131n kA De\u011ferleri<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Farkl\u0131 tipteki devre kesiciler genellikle farkl\u0131 kesme kapasitesi aral\u0131klar\u0131yla sunulur. Ancak bu aral\u0131klar, evrensel kurallar olarak de\u011fil, tipik piyasa referanslar\u0131 olarak de\u011ferlendirilmelidir. Kesin de\u011ferler, nominal gerilim, \u00fcr\u00fcn standard\u0131, g\u00f6vde boyutu, tasar\u0131m, uygulama ve \u00fcreticinin teknik verilerine ba\u011fl\u0131d\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><div class=\"table-wrap\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Kesici tipi<\/strong><\/td><td><strong>Yayg\u0131n kullan\u0131m alanlar\u0131<\/strong><\/td><td><strong>K\u0131rma kapasitesine ili\u015fkin tipik tart\u0131\u015fma<\/strong><\/td><\/tr><tr><td>MCB<\/td><td>Son devreler, k\u00fc\u00e7\u00fck da\u011f\u0131t\u0131m panolar\u0131 ve hafif ticari y\u00fckler.<\/td><td>Pazar ve standartlara ba\u011fl\u0131 olarak genellikle 4,5 kA, 6 kA veya 10 kA gibi daha d\u00fc\u015f\u00fck kA seviyeleri \u00e7er\u00e7evesinde tart\u0131\u015f\u0131l\u0131r.<\/td><\/tr><tr><td>MCCB<\/td><td>Besleme hatlar\u0131, da\u011f\u0131t\u0131m panolar\u0131, motor devreleri, jenerat\u00f6r \u00e7\u0131k\u0131\u015flar\u0131 ve end\u00fcstriyel y\u00fckler.<\/td><td>Genellikle seri ve gerilime g\u00f6re 10 kA, 25 kA, 36 kA, 50 kA, 70 kA veya daha y\u00fcksek gibi daha geni\u015f kA aral\u0131klar\u0131nda mevcuttur.<\/td><\/tr><tr><td>ACB<\/td><td>Ana besleme hatlar\u0131, b\u00fcy\u00fck da\u011f\u0131t\u0131m sistemleri ve se\u00e7ici koruma \u015femalar\u0131.<\/td><td>Kesme kapasitesi, k\u0131sa s\u00fcreli dayan\u0131m ve koordinasyonun \u00f6nemli oldu\u011fu y\u00fcksek ak\u0131ml\u0131 sistemler i\u00e7in s\u0131kl\u0131kla tercih edilir.<\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-crucial-point-is-that-one-cannot-make-a-selection-solely-based-on-common-specification-ranges-a-10ka-circuit-breaker-might-be-just-right-when-placed-in-a-downstream-distribution-box-but-it-might-not-be-sufficient-when-placed-in-the-main-distribution-cabinet-near-the-transformer-a-50ka-circuit-breaker-which-might-be-necessary-in-an-industrial-project-could-be-a-waste-of-resources-for-a-small-distribution-panel-with-a-much-smaller-short-circuit-current\">\u00d6nemli olan nokta, se\u00e7imi yaln\u0131zca genel teknik \u00f6zellik aral\u0131klar\u0131na dayand\u0131rarak yapamayaca\u011f\u0131m\u0131zd\u0131r. 10 kA\u2019l\u0131k bir devre kesici, bir alt da\u011f\u0131t\u0131m kutusuna yerle\u015ftirildi\u011finde tam uygun olabilir, ancak transformat\u00f6r\u00fcn yan\u0131ndaki ana da\u011f\u0131t\u0131m kabinine yerle\u015ftirildi\u011finde yeterli olmayabilir. End\u00fcstriyel bir projede gerekli olabilecek 50 kA'l\u0131k bir devre kesici, \u00e7ok daha d\u00fc\u015f\u00fck k\u0131sa devre ak\u0131m\u0131na sahip k\u00fc\u00e7\u00fck bir da\u011f\u0131t\u0131m paneli i\u00e7in kaynak israf\u0131 olabilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"from-a-procurement-perspective-the-most-reliable-approach-is-as-follows-first-based-on-the-project-technical-specifications-short-circuit-current-calculation-results-local-electrical-regulations-and-cabinet-design-plans-determine-the-specific-ka-rated-value-required-then-match-the-corresponding-series-of-circuit-breakers-and-the-parameter-specifications\">Tedarik a\u00e7\u0131s\u0131ndan en g\u00fcvenilir yakla\u015f\u0131m \u015f\u00f6yledir: \u00d6ncelikle, projenin teknik \u015fartnameleri, k\u0131sa devre ak\u0131m\u0131 hesaplama sonu\u00e7lar\u0131, yerel elektrik y\u00f6netmelikleri ve kabin tasar\u0131m planlar\u0131 temel al\u0131narak, gerekli olan spesifik kA nominal de\u011feri belirlenmelidir. Ard\u0131ndan, buna uygun devre kesici serisi ve parametre \u00f6zellikleri se\u00e7ilmelidir.<\/p>\n\n\n\n<h2 id=\"how-to-choose-the-right-ka-rating-for-an-mccb\" class=\"wp-block-heading\">Bir MCCB i\u00e7in Do\u011fru kA De\u011ferini Nas\u0131l Se\u00e7ilir?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Do\u011fru MCCB kA de\u011ferini se\u00e7erken, \u00fcr\u00fcn katalo\u011fundaki en ucuz se\u00e7enekten ziyade elektrik sisteminin kendisinden yola \u00e7\u0131k\u0131lmal\u0131d\u0131r. Sat\u0131n alma personeli, m\u00fchendisler veya kabin \u00fcreticileri \u00f6ncelikle devre kesicinin nereye monte edilece\u011fini ve o noktada meydana gelebilecek k\u0131sa devre ak\u0131m\u0131n\u0131n b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc belirlemelidir. Ard\u0131ndan, proje gereksinimlerine uygun bir marj b\u0131rakarak, bu de\u011feri kar\u015f\u0131layan veya a\u015fan kesme kapasitesine sahip bir MCCB se\u00e7melidirler.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u015fa\u011f\u0131daki kontrol listesi, talepte bulunmadan \u00f6nce se\u00e7imle ilgili ileti\u015fim s\u00fcrecini netle\u015ftirmenize yard\u0131mc\u0131 olabilir. Bu liste, resmi m\u00fchendislik hesaplamalar\u0131n\u0131n yerini alamaz; ancak genellikle nihai \u00fcr\u00fcn serisini belirleyen \u00f6nemli bilgilerin g\u00f6zden ka\u00e7mas\u0131n\u0131 \u00f6nlemede faydal\u0131d\u0131r.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><div class=\"table-wrap\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Se\u00e7im \u00f6\u011fesi<\/strong><\/td><td><strong>Neleri teyit etmek gerekir?<\/strong><\/td><td><strong>Neden \u00f6nemli?<\/strong><\/td><\/tr><tr><td>Anma gerilimi<\/td><td>Sistem gerilimi, AC\/DC durumu ve ilgili standart.<\/td><td>Kesme kapasitesi, do\u011fru gerilimde kontrol edilmelidir. Bir gerilimdeki de\u011fer, ba\u015fka bir gerilimde ge\u00e7erli olmayabilir.<\/td><\/tr><tr><td>Mevcut ar\u0131za ak\u0131m\u0131<\/td><td>MCCB kurulum noktas\u0131nda hesaplanan veya belirtilen k\u0131sa devre ak\u0131m\u0131.<\/td><td>Se\u00e7ilen kA de\u011feri, mevcut ar\u0131za ak\u0131m\u0131ndan daha d\u00fc\u015f\u00fck olmamal\u0131d\u0131r.<\/td><\/tr><tr><td>Gerekli koparma kapasitesi<\/td><td>kA projesinin bir gereksinimi veya hedeflenen Icu\/Ics de\u011feri.<\/td><td>Bu, standart, y\u00fcksek kopma mukavemetli veya daha y\u00fcksek performansl\u0131 bir serinin gerekli olup olmad\u0131\u011f\u0131n\u0131 belirler.<\/td><\/tr><tr><td>Nominal ak\u0131m \/ \u00e7er\u00e7eve boyutu<\/td><td>Y\u00fck ak\u0131m\u0131, \u00e7er\u00e7eve boyutu, devre kesme de\u011feri ve g\u00fc\u00e7 d\u00fc\u015f\u00fcrme ko\u015fullar\u0131.<\/td><td>Kesici, hatal\u0131 devreye girme veya a\u015f\u0131r\u0131 \u0131s\u0131nma olmaks\u0131z\u0131n normal ak\u0131m\u0131 iletebilmelidir.<\/td><\/tr><tr><td>Kablo ve panel nominal de\u011feri<\/td><td>Kablo \u00e7ap\u0131, baral\u0131 tasar\u0131m, muhafaza koruma s\u0131n\u0131f\u0131 ve panel k\u0131sa devre dayan\u0131m de\u011feri.<\/td><td>Kesici, yaln\u0131zca tek tek bile\u015fenlerin nominal de\u011ferlerine de\u011fil, t\u00fcm montaj\u0131n nominal de\u011ferine uygun olmal\u0131d\u0131r.<\/td><\/tr><tr><td>Direk say\u0131s\u0131<\/td><td>3P, 4P veya di\u011fer sistem gereksinimleri.<\/td><td>Direk se\u00e7imi, devre d\u00fczenini, n\u00f6tr devre anahtarlamas\u0131n\u0131 ve panonun kablolamas\u0131n\u0131 etkiler.<\/td><\/tr><tr><td>A\u00e7ma \u00fcnitesi<\/td><td>Duruma g\u00f6re termal manyetik, elektronik, ayarlanabilir veya sabit ayarlar.<\/td><td>A\u00e7ma-kapama davran\u0131\u015f\u0131, a\u015f\u0131r\u0131 y\u00fck ve k\u0131sa devre korumalar\u0131n\u0131, koordinasyonu ve uygulama esnekli\u011fini etkiler.<\/td><\/tr><tr><td>ICU \/ ICS ili\u015fkisi<\/td><td>Teknik \u00f6zellik tablosundaki maksimum de\u011ferler ve hizmet kesinti kapasitesi.<\/td><td>Kritik veya kesintisiz \u00e7al\u0131\u015fan sistemler, hizmet performans\u0131n\u0131n daha kapsaml\u0131 bir \u015fekilde do\u011frulanmas\u0131n\u0131 gerektirebilir.<\/td><\/tr><tr><td>Hedef pazar<\/td><td>IEC, UL veya yerel y\u00f6netmeliklere ili\u015fkin gereklilikler ve belgeleme ihtiya\u00e7lar\u0131.<\/td><td>Sertifikasyon, etiketleme ve test gereklilikleri, pazara ve \u00fcr\u00fcn serisine g\u00f6re de\u011fi\u015fiklik g\u00f6sterir.<\/td><\/tr><tr><td>Ba\u015fvuru<\/td><td>Da\u011f\u0131t\u0131m besleme hatt\u0131, motor, jenerat\u00f6r, g\u00fcne\u015f enerjisi, end\u00fcstriyel panel veya di\u011fer kullan\u0131mlar.<\/td><td>Uygulama, koruma \u00f6zelliklerini, aksesuarlar\u0131 ve koordinasyon gereksinimlerini etkiler.<\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img data-srcset=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-10.png 323w, https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-10-300x241.png 300w\" decoding=\"async\"   data-src=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-10.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"\" class=\"wp-image-9633 lazyload\" style=\"aspect-ratio:1.2471944008688307;width:479px;height:auto\"  sizes=\"(max-width: 323px) 100vw, 323px\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"323\" height=\"259\" src=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-10.png\" alt=\"\" class=\"wp-image-9633\" style=\"aspect-ratio:1.2471944008688307;width:479px;height:auto\" srcset=\"https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-10.png 323w, https:\/\/www.oohmage.com\/wp-content\/uploads\/2026\/07\/image-10-300x241.png 300w\" sizes=\"(max-width: 323px) 100vw, 323px\" \/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"for-instance-the-purchaser-might-request-a-400a-3-pole-mccb-but-this-information-is-still-far-from-sufficient-the-supplier-also-needs-to-know-what-is-the-system-voltage-400v-415v-480v-or-other-values-what-is-the-required-breaking-capacity-25ka-36ka-50ka-or-higher-is-the-trip-unit-fixed-or-adjustable-does-the-product-need-to-meet-the-document-certification-requirements-of-specific-markets\">\u00d6rne\u011fin, al\u0131c\u0131 400 A, 3 kutuplu bir MCCB talep edebilir. Ancak bu bilgi h\u00e2l\u00e2 yeterli olmaktan uzakt\u0131r. Tedarik\u00e7inin ayr\u0131ca \u015funlar\u0131 da bilmesi gerekir: Sistem gerilimi nedir (400 V, 415 V, 480 V veya ba\u015fka de\u011ferler)? Gerekli kesme kapasitesi nedir (25 kA, 36 kA, 50 kA veya daha y\u00fcksek)? A\u00e7ma \u00fcnitesi sabit mi yoksa ayarlanabilir mi? \u00dcr\u00fcn\u00fcn belirli pazarlar\u0131n belge sertifikasyon gerekliliklerini kar\u015f\u0131lamas\u0131 gerekiyor mu?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"when-the-information-is-incomplete-a-responsible-supplier-should-proactively-clarify-the-situation-to-the-customer-instead-of-presumptuously-providing-a-generic-model-this-approach-not-only-demonstrates-responsibility-towards-the-purchasing-party-but-also-towards-the-cabinet-manufacturer-and-the-final-installation-site\">Bilgiler eksik oldu\u011funda, sorumlu bir tedarik\u00e7i, keyfi bir \u015fekilde genel bir model sunmak yerine, durumu m\u00fc\u015fteriye proaktif bir \u015fekilde a\u00e7\u0131kl\u0131\u011fa kavu\u015fturmal\u0131d\u0131r. Bu yakla\u015f\u0131m, sadece sat\u0131n alan tarafa de\u011fil, ayn\u0131 zamanda dolap \u00fcreticisine ve nihai kurulum yerine de sorumluluk g\u00f6sterir.<\/p>\n\n\n\n<h2 id=\"example-reading-a-400a-mccb-with-36ka-or-50ka-breaking-capacity\" class=\"wp-block-heading\">\u00d6rnek: 36 kA veya 50 kA kesme kapasitesine sahip 400 A\u2019l\u0131k bir MCCB\u2019nin de\u011ferini okumak<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Varsay\u0131msal bir proje \u00f6rne\u011fi ele alal\u0131m: Gereksinim, 400A\u2019l\u0131k bir MCCB\u2019dir. Buradaki 400A, se\u00e7ilen \u00fcr\u00fcn konfig\u00fcrasyonu kapsam\u0131ndaki nominal ak\u0131m veya a\u00e7ma ak\u0131m\u0131 de\u011ferini ifade eder. Bu de\u011fer, s\u00f6z konusu devre kesicinin k\u0131sa devre kesme kapasitesini belirtmez. Gereksinimi teknik a\u00e7\u0131dan eksiksiz hale getirmek i\u00e7in, al\u0131c\u0131 ayr\u0131ca ilgili gerilimde 36 kA m\u0131 yoksa 50 kA m\u0131 oldu\u011fu gibi gerekli kesme kapasitesini de belirtmelidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kurulum noktas\u0131nda beklenen k\u0131sa devre ak\u0131m\u0131 30 kA ise, kesme kapasitesi a\u00e7\u0131s\u0131ndan 36 kA\u2019l\u0131k bir MCCB yeterli olabilir \u2013 elbette, nominal gerilim, Icu\/Ics, kabin tasar\u0131m\u0131, koruma koordinasyonu ve yerel y\u00f6netmelikler gibi di\u011fer fakt\u00f6rler de dikkate al\u0131nmal\u0131d\u0131r. Ancak, beklenen k\u0131sa devre ak\u0131m\u0131 42 kA ise, 36 kA'l\u0131k se\u00e7enek yeterli olmayabilir ve 50 kA veya daha y\u00fcksek \u00f6zellikli bir \u00e7\u00f6z\u00fcm\u00fcn de\u011ferlendirilmesi gerekebilir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bunun yaln\u0131zca basitle\u015ftirilmi\u015f bir \u00f6rnek oldu\u011funu belirtmek \u00f6nemlidir. Nihai se\u00e7im, projenin ger\u00e7ek k\u0131sa devre hesaplama sonu\u00e7lar\u0131 ve \u00fcr\u00fcn teknik \u00f6zellik belgeleri temel al\u0131narak teyit edilmelidir.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><div class=\"table-wrap\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Etiket \u00f6\u011fesi<\/strong><\/td><td><strong>Al\u0131c\u0131n\u0131n g\u00f6rebilece\u011fi \u015feyler<\/strong><\/td><td><strong>Nas\u0131l yorumlanmal\u0131?<\/strong><\/td><\/tr><tr><td>400A<\/td><td>Anma ak\u0131m\u0131 veya devre kesme de\u011feri.<\/td><td>Normal ak\u0131m se\u00e7ene\u011fi. Bu, 400 kA anlam\u0131na gelmez.<\/td><\/tr><tr><td>36 kA veya 50 kA<\/td><td>Belirtilen gerilimdeki kopma kapasitesi.<\/td><td>Ar\u0131za ak\u0131m\u0131 kesme kapasitesi. Bu de\u011fer, gerekli ar\u0131za ak\u0131m\u0131 seviyesine e\u015fit veya bu seviyenin \u00fczerinde olmal\u0131d\u0131r.<\/td><\/tr><tr><td>3P \/ 4P<\/td><td>Direk d\u00fczeni.<\/td><td>Sistem kablolama d\u00fczenine ve n\u00f6tr kablo gereksinimlerine uygun olmal\u0131d\u0131r.<\/td><\/tr><tr><td>A\u00e7ma \u00fcnitesi<\/td><td>Seriye ba\u011fl\u0131 olarak sabit, ayarlanabilir, termomanyetik veya elektronik tipte olabilir.<\/td><td>Koruma davran\u0131\u015f\u0131n\u0131 ve koordinasyon esnekli\u011fini etkiler.<\/td><\/tr><tr><td>Gerilim i\u015fareti<\/td><td>\u00d6rnek: Belirli bir gerilimdeki Ue de\u011feri.<\/td><td>kA de\u011ferinin proje geriliminde ge\u00e7erli oldu\u011funu do\u011frulay\u0131n.<\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"this-example-demonstrates-why-when-making-an-inquiry-for-mccb-one-must-never-simply-say-i-need-a-circuit-breaker-with-a-rating-of-400a-a-complete-inquiry-should-provide-the-supplier-with-sufficient-information-so-that-he-can-help-you-select-the-appropriate-series-rather-than-merely-matching-a-specific-rated-current-value\">Bu \u00f6rnek, MCCB i\u00e7in teklif talebinde bulunurken neden asla sadece \u201c400A nominal ak\u0131m de\u011ferine sahip bir devre kesiciye ihtiyac\u0131m var\u201d dememeniz gerekti\u011fini g\u00f6stermektedir. Tam bir teklif talebi, tedarik\u00e7iye yaln\u0131zca belirli bir nominal ak\u0131m de\u011ferini e\u015fle\u015ftirmek yerine, uygun seriyi se\u00e7menize yard\u0131mc\u0131 olabilmesi i\u00e7in yeterli bilgiyi sa\u011flamal\u0131d\u0131r.<\/p>\n\n\n\n<h2 id=\"common-mistakes-when-selecting-mccb-ka-rating\" class=\"wp-block-heading\">MCCB kA De\u011ferini Se\u00e7erken S\u0131k Yap\u0131lan Hatalar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-first-common-mistake-is-confusing-the-rated-current-with-the-ka-rated-value-the-purchaser-might-have-chosen-a-circuit-breaker-simply-because-its-current-rating-matched-the-load-but-completely-failed-to-consider-whether-it-could-safely-interrupt-the-short-circuit-current-at-the-installation-point-this-is-the-most-common-problem-at-first-glance-the-circuit-breaker-seems-to-be-the-right-choice-but-technically-speaking-it-is-completely-unsuitable\">En s\u0131k yap\u0131lan ilk hata, nominal ak\u0131m\u0131 kA cinsinden nominal de\u011ferle kar\u0131\u015ft\u0131rmakt\u0131r. Al\u0131c\u0131, sadece nominal ak\u0131m\u0131 y\u00fcke uygun oldu\u011fu i\u00e7in bir devre kesici se\u00e7mi\u015f olabilir, ancak bu devre kesicinin kurulum noktas\u0131nda k\u0131sa devre ak\u0131m\u0131n\u0131 g\u00fcvenli bir \u015fekilde kesip kesemeyece\u011fini hi\u00e7 dikkate almam\u0131\u015f olabilir. Bu en yayg\u0131n sorundur \u2013 ilk bak\u0131\u015fta devre kesici do\u011fru se\u00e7im gibi g\u00f6r\u00fcn\u00fcr, ancak teknik a\u00e7\u0131dan bak\u0131ld\u0131\u011f\u0131nda tamamen uygun de\u011fildir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-second-mistake-is-to-only-consider-the-price-without-considering-the-installation-location-low-ka-circuit-breakers-are-indeed-cheaper-but-if-they-are-installed-next-to-the-transformer-at-the-generator-outlet-or-near-the-main-distribution-panel-they-might-not-be-sufficient-because-the-short-circuit-current-in-these-areas-is-often-higher-the-price-should-be-considered-after-confirming-the-basic-electrical-suitability\">\u0130kinci hata, kurulum yerini dikkate almadan sadece fiyat\u0131 g\u00f6z \u00f6n\u00fcnde bulundurmakt\u0131r. D\u00fc\u015f\u00fck kA de\u011ferine sahip devre kesiciler ger\u00e7ekten daha ucuzdur, ancak bunlar transformat\u00f6r\u00fcn yan\u0131na, jenerat\u00f6r \u00e7\u0131k\u0131\u015f\u0131na veya ana da\u011f\u0131t\u0131m panosunun yak\u0131n\u0131na monte edilirse, bu alanlardaki k\u0131sa devre ak\u0131m\u0131 genellikle daha y\u00fcksek oldu\u011fu i\u00e7in yeterli olmayabilir. Fiyat, temel elektriksel uygunluk do\u011fruland\u0131ktan sonra de\u011ferlendirilmelidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-third-mistake-is-to-overlook-the-influence-of-the-rated-voltage-the-interrupting-capacity-is-not-an-isolated-value-the-same-circuit-breaker-may-have-one-interrupting-capacity-at-this-voltage-but-it-could-be-a-different-value-at-a-different-voltage-it-is-essential-to-consult-the-specification-sheet-in-accordance-with-the-actual-system-voltage\">\u00dc\u00e7\u00fcnc\u00fc hata, nominal gerilimin etkisini g\u00f6z ard\u0131 etmektir. Kesme kapasitesi tek ba\u015f\u0131na de\u011ferlendirilen bir de\u011fer de\u011fildir. Ayn\u0131 devre kesici, bu gerilimde belirli bir kesme kapasitesine sahip olabilir, ancak farkl\u0131 bir gerilimde bu de\u011fer farkl\u0131 olabilir. Ger\u00e7ek sistem gerilimine uygun olarak teknik \u00f6zellik belgesine ba\u015fvurmak b\u00fcy\u00fck \u00f6nem ta\u015f\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-fourth-mistake-is-to-focus-solely-on-the-circuit-breaker-itself-and-fail-to-consider-the-entire-distribution-panel-the-cabinet-busbar-system-cables-upstream-protection-devices-as-well-as-the-short-circuit-tolerance-capacity-of-the-distribution-panel-itself-all-need-to-be-taken-into-account-a-high-breaking-capacity-circuit-breaker-does-not-mean-that-the-entire-system-can-withstand-the-same-level-of-faults\">D\u00f6rd\u00fcnc\u00fc hata, yaln\u0131zca devre kesiciye odaklan\u0131p da\u011f\u0131t\u0131m panosunun tamam\u0131n\u0131 g\u00f6z ard\u0131 etmektir. Da\u011f\u0131t\u0131m panosunun kabini, baral\u0131 sistemi, kablolar\u0131, yukar\u0131 ak\u0131m koruma cihazlar\u0131 ve ayr\u0131ca panonun kendisinin k\u0131sa devre tolerans kapasitesi de dikkate al\u0131nmal\u0131d\u0131r. Y\u00fcksek kesme kapasitesine sahip bir devre kesici, t\u00fcm sistemin ayn\u0131 seviyedeki ar\u0131zalara dayanabilece\u011fi anlam\u0131na gelmez.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-fifth-mistake-is-to-simply-replace-the-circuit-breaker-without-investigating-the-cause-after-it-has-experienced-a-serious-fault-if-the-mccb-has-already-disconnected-a-high-fault-current-then-the-installation-should-be-inspected-according-to-the-product-documentation-maintenance-procedures-and-safety-rules-whether-to-replace-it-or-not-should-be-decided-by-qualified-personnel\">Be\u015finci hata, devre kesicide ciddi bir ar\u0131za meydana geldikten sonra nedenini ara\u015ft\u0131rmadan devre kesiciyi basit\u00e7e de\u011fi\u015ftirmektir. MCCB halihaz\u0131rda y\u00fcksek bir ar\u0131za ak\u0131m\u0131n\u0131 kesmi\u015fse, tesisat \u00fcr\u00fcn belgeleri, bak\u0131m prosed\u00fcrleri ve g\u00fcvenlik kurallar\u0131 do\u011frultusunda incelenmelidir. Devre kesicinin de\u011fi\u015ftirilip de\u011fi\u015ftirilmeyece\u011fine ili\u015fkin karar, yetkili personel taraf\u0131ndan verilmelidir.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"a-standardized-procurement-process-can-prevent-these-problems-the-key-lies-in-treating-the-ka-rating-as-a-mandatory-technical-parameter-rather-than-an-optional-add-on-item-in-the-product-catalogue\">Standartla\u015ft\u0131r\u0131lm\u0131\u015f bir tedarik s\u00fcreci bu sorunlar\u0131 \u00f6nleyebilir. Bunun anahtar\u0131, KA derecesini \u00fcr\u00fcn katalo\u011fundaki iste\u011fe ba\u011fl\u0131 bir ek \u00f6zellik olarak de\u011fil, zorunlu bir teknik parametre olarak ele almakt\u0131r.<\/p>\n\n\n\n<h2 id=\"when-to-ask-oohmage-for-mccb-selection-support\" class=\"wp-block-heading\">MCCB Se\u00e7imi Konusunda OOHMAGE\u2019den Ne Zaman Destek \u0130stenmelidir?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">OOHMAGE, g\u00fc\u00e7 da\u011f\u0131t\u0131m\u0131, end\u00fcstriyel ve proje uygulamalar\u0131 i\u00e7in uygun MCCB \u00e7\u00f6z\u00fcmleri de dahil olmak \u00fczere al\u00e7ak gerilim elektrik \u00fcr\u00fcnleri tedarik etmektedir. Proje gereksinimleri ne kadar net olursa, model e\u015fle\u015ftirme o kadar h\u0131zl\u0131 ve do\u011fru bir \u015fekilde ger\u00e7ekle\u015ftirilebilir. Gereksinimler eksikse, ilk ad\u0131m, devre kesicinin uygun boyutunu tahmin etmek yerine sahadaki elektrik ko\u015fullar\u0131n\u0131 netle\u015ftirmek olmal\u0131d\u0131r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MCCB modeli deste\u011fi veya fiyat teklifi talep etmeden \u00f6nce, elinizde varsa a\u015fa\u011f\u0131daki bilgileri g\u00f6nderin:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nominal gerilim ve AC\/DC sistem t\u00fcr\u00fc.<\/li>\n\n\n\n<li>Anma ak\u0131m\u0131 veya beklenen y\u00fck ak\u0131m\u0131.<\/li>\n\n\n\n<li>Gerekli kA kesme kapasitesi veya hesaplanan mevcut ar\u0131za ak\u0131m\u0131.<\/li>\n\n\n\n<li>Kutuplu say\u0131lar\u0131 (\u00f6rne\u011fin 3P veya 4P).<\/li>\n\n\n\n<li>Belirtilmi\u015fse, sabit, ayarlanabilir, termomanyetik veya elektronik gibi devre kesici t\u00fcr\u00fc tercihi.<\/li>\n\n\n\n<li>Miktar, hedef pazar ve gerekli belgeler.<\/li>\n\n\n\n<li>Da\u011f\u0131t\u0131m paneli, motor besleme hatt\u0131, jenerat\u00f6r \u00e7\u0131k\u0131\u015f\u0131, g\u00fcne\u015f enerjisi sistemi veya end\u00fcstriyel y\u00fck gibi uygulamalar.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"with-these-detailed-information-oohmage-is-able-to-assist-in-reviewing-the-appropriate-mccb-series-solutions-and-to-formulate-a-clearer-quotation-path-however-specific-values-certification-certificates-accessory-configurations-inventory-status-and-market-entry-qualifications-for-the-target-market-still-need-to-be-confirmed-one-by-one-based-on-the-selected-product-series-specification-documents-order-requirements-and-the-final-usage-location\">Bu ayr\u0131nt\u0131l\u0131 bilgiler sayesinde OOHMAGE, uygun MCCB serisi \u00e7\u00f6z\u00fcmlerinin de\u011ferlendirilmesine yard\u0131mc\u0131 olabilir ve daha net bir teklif s\u00fcreci olu\u015fturabilir. Ancak, hedef pazara y\u00f6nelik spesifik de\u011ferler, sertifikalar, aksesuar konfig\u00fcrasyonlar\u0131, stok durumu ve pazara giri\u015f \u015fartlar\u0131, se\u00e7ilen \u00fcr\u00fcn serisi, teknik \u00f6zellik belgeleri, sipari\u015f gereksinimleri ve nihai kullan\u0131m yeri temel al\u0131narak tek tek teyit edilmelidir.<strong><\/strong><\/p>\n\n\n\n<h2 id=\"final-thoughts\" class=\"wp-block-heading\">Son D\u00fc\u015f\u00fcnceler<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bir MCCB\u2019nin kA de\u011feri, sistemdeki mevcut ar\u0131za ak\u0131m\u0131n\u0131 kesicinin g\u00fcvenli kesme kapasitesiyle ili\u015fkilendirir. Do\u011fru se\u00e7im, kurulum noktas\u0131ndan ba\u015flar: ar\u0131za ak\u0131m\u0131n\u0131 belirleyin, ard\u0131ndan teknik \u00f6zellik belgesinden nominal gerilim\/ak\u0131m, Icu\/Ics, kutup say\u0131s\u0131 ve devre kesme \u00fcnitesini do\u011frulay\u0131n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Al\u0131c\u0131lar ve panele montajc\u0131lar, se\u00e7imlerini asla sadece amper de\u011ferine g\u00f6re yapmamal\u0131d\u0131r; \u00f6zellikle ana paneller, end\u00fcstriyel besleme hatlar\u0131, jenerat\u00f6r \u00e7\u0131k\u0131\u015flar\u0131 ve di\u011fer y\u00fcksek ar\u0131za riski ta\u015f\u0131yan noktalarda kesme kapasitesini her zaman do\u011frulamal\u0131d\u0131r. Eksiksiz proje verileriyle, <a href=\"https:\/\/www.oohmage.com\/tr\/\" data-type=\"link\" data-id=\"https:\/\/www.oohmage.com\/\">OOHMAGE<\/a> a\u00e7\u0131k\u00e7a tan\u0131mlanm\u0131\u015f teknik gereksinimlere dayal\u0131 olarak \u00fcr\u00fcn se\u00e7imi ve teklif incelemesi konusunda destek sa\u011flayabilir.<\/p>\n\n\n\n<h2 id=\"mccb-ka-rating-faqs\" class=\"wp-block-heading\">MCCB kA De\u011ferine \u0130li\u015fkin S\u0131k Sorulan Sorular<\/h2>\n\n\n\n<h3 id=\"what-does-ka-mean-on-a-circuit-breaker\" class=\"wp-block-heading\">Bir devre kesicide \u201ckA\u201d ne anlama gelir?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">kA, kiloamper anlam\u0131na gelir. Bir devre kesicide bu de\u011fer genellikle, kesicinin belirli ko\u015fullar alt\u0131nda g\u00fcvenli bir \u015fekilde kesebilece\u011fi k\u0131sa devre ak\u0131m\u0131 seviyesini ifade eder. \u00d6rne\u011fin, 10 kA, gerilim, standartlar ve teknik \u00f6zellikler belgesindeki bilgilere ba\u011fl\u0131 olarak 10.000 amperlik kesme kapasitesi anlam\u0131na gelir.<\/p>\n\n\n\n<h3 id=\"is-ka-rating-the-same-as-amp-rating\" class=\"wp-block-heading\"><strong>kA de\u011feri, amper de\u011feri ile ayn\u0131 m\u0131d\u0131r?<\/strong><strong><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hay\u0131r. Amper (A) de\u011feri, 100 A veya 400 A gibi normal s\u00fcrekli ak\u0131m\u0131 ifade eder. kA de\u011feri ise 10 kA, 25 kA veya 50 kA gibi k\u0131sa devre kesme kapasitesini ifade eder. Bir MCCB se\u00e7erken her iki de\u011fer de gereklidir.<\/p>\n\n\n\n<h3 id=\"what-is-the-ka-rating-of-an-mccb\" class=\"wp-block-heading\">Bir MCCB\u2019nin kA de\u011feri nedir?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-ka-rating-of-mccb-depends-on-the-product-series-enclosure-grade-rated-voltage-and-applicable-standards-usually-when-selecting-one-may-encounter-ratings-of-10ka-25ka-36ka-50ka-70ka-or-higher-but-the-specific-value-must-be-confirmed-based-on-the-specification-sheet-and-project-requirements\">MCCB\u2019nin kA de\u011feri, \u00fcr\u00fcn serisine, muhafaza s\u0131n\u0131f\u0131na, nominal gerilime ve ge\u00e7erli standartlara ba\u011fl\u0131d\u0131r. Genellikle se\u00e7im yap\u0131l\u0131rken 10 kA, 25 kA, 36 kA, 50 kA, 70 kA veya daha y\u00fcksek de\u011ferlerle kar\u015f\u0131la\u015f\u0131labilir, ancak kesin de\u011fer teknik \u00f6zellik belgesine ve proje gereksinimlerine g\u00f6re teyit edilmelidir.<\/p>\n\n\n\n<h3 id=\"what-is-the-difference-between-icu-and-ics-in-mccb\" class=\"wp-block-heading\"><strong>MCCB\u2019de Icu ile Ics aras\u0131ndaki fark nedir?<\/strong><strong><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Icu, nihai k\u0131sa devre kesme kapasitesini, Ics ise hizmet k\u0131sa devre kesme kapasitesini ifade eder. Al\u0131c\u0131 a\u00e7\u0131s\u0131ndan bak\u0131ld\u0131\u011f\u0131nda, Icu tan\u0131mlanm\u0131\u015f en y\u00fcksek kesme kapasitesini, Ics ise tan\u0131mlanm\u0131\u015f k\u0131sa devre ko\u015fullar\u0131 alt\u0131nda hizmet performans\u0131n\u0131 g\u00f6sterir. Bu ili\u015fki, se\u00e7ilen MCCB teknik \u00f6zellik belgesinde kontrol edilmelidir.<\/p>\n\n\n\n<h3 id=\"can-i-use-a-10ka-breaker-instead-of-a-6ka-breaker\" class=\"wp-block-heading\">6 kA'l\u0131k bir kesici yerine 10 kA'l\u0131k bir kesici kullanabilir miyim?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c7o\u011fu durumda, daha y\u00fcksek bir kesme kapasitesi, daha d\u00fc\u015f\u00fck bir kA gereksinimini kar\u015f\u0131layabilir veya a\u015fabilir; ancak se\u00e7im yaln\u0131zca kA de\u011ferine dayal\u0131 de\u011fildir. Yine de nominal gerilim, nominal ak\u0131m, kutup say\u0131s\u0131, devre kesme \u00fcnitesi, fiziksel uyumluluk, standart, panel nominal de\u011feri ve yerel y\u00f6netmelik gerekliliklerini do\u011frulaman\u0131z gerekir.<\/p>\n\n\n\n<h3 id=\"what-happens-if-the-breaker-ka-rating-is-too-low\" class=\"wp-block-heading\">Kesicinin kA de\u011feri \u00e7ok d\u00fc\u015f\u00fckse ne olur?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mevcut ar\u0131za ak\u0131m\u0131, kesicinin kesme kapasitesinden y\u00fcksekse, kesici ar\u0131zay\u0131 g\u00fcvenli bir \u015fekilde kesemeyebilir. Bu durum, ekipman hasar\u0131, ark enerjisi, muhafaza ar\u0131zas\u0131 veya g\u00fcvenli olmayan ko\u015fullar riskini art\u0131rabilir. Kurulum, yetkili personel taraf\u0131ndan g\u00f6zden ge\u00e7irilmelidir.<\/p>\n\n\n\n<h3 id=\"how-do-i-know-what-ka-rating-my-panel-needs\" class=\"wp-block-heading\">Panomun hangi kA de\u011ferine ihtiyac\u0131 oldu\u011funu nas\u0131l anlar\u0131m?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"the-required-ka-rating-should-be-determined-based-on-the-results-of-short-circuit-calculations-or-the-project-technical-specifications-the-influencing-factors-include-the-transformer-capacity-and-its-impedance-the-cable-length-the-short-circuit-capacity-of-the-upstream-power-grid-the-contribution-of-the-generator-or-motor-s-feedback-current-and-the-installation-position-of-the-distribution-panel-in-the-system-the-specific-expected-short-circuit-current-value-should-be-confirmed-by-qualified-electrical-professionals\">Gerekli kA de\u011feri, k\u0131sa devre hesaplamalar\u0131n\u0131n sonu\u00e7lar\u0131na veya projenin teknik \u015fartnamelerine g\u00f6re belirlenmelidir. Etkileyen fakt\u00f6rler aras\u0131nda transformat\u00f6r kapasitesi ve empedans\u0131, kablo uzunlu\u011fu, yukar\u0131 ak\u0131\u015ftaki elektrik \u015febekesinin k\u0131sa devre kapasitesi, jenerat\u00f6r veya motorun geri besleme ak\u0131m\u0131n\u0131n katk\u0131s\u0131 ve sistemdeki da\u011f\u0131t\u0131m panosunun kurulum konumu yer al\u0131r. Beklenen spesifik k\u0131sa devre ak\u0131m\u0131 de\u011feri, kalifiye elektrik uzmanlar\u0131 taraf\u0131ndan teyit edilmelidir.<\/p>\n\n\n\n<h3 id=\"does-a-higher-ka-rating-mean-better-protection\" class=\"wp-block-heading\">Daha y\u00fcksek bir kA de\u011feri, daha iyi koruma anlam\u0131na gelir mi?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"a-higher-ka-rating-indicates-a-stronger-interrupting-capacity-but-this-does-not-necessarily-mean-that-the-overall-protection-effect-will-be-better-correct-protection-also-depends-on-multiple-factors-such-as-rated-current-trip-setting-value-protection-coordination-voltage-level-specific-application-and-cabinet-design-the-most-suitable-choice-is-always-the-one-that-matches-the-actual-system-requirements\">Daha y\u00fcksek bir kA de\u011feri, daha g\u00fc\u00e7l\u00fc bir kesme kapasitesini g\u00f6sterir; ancak bu, genel koruma etkisinin mutlaka daha iyi olaca\u011f\u0131 anlam\u0131na gelmez. Do\u011fru koruma, ayr\u0131ca nominal ak\u0131m, devre kesme ayar de\u011feri, koruma koordinasyonu, gerilim seviyesi, \u00f6zel uygulama ve kabin tasar\u0131m\u0131 gibi bir\u00e7ok fakt\u00f6re ba\u011fl\u0131d\u0131r. En uygun se\u00e7im, her zaman ger\u00e7ek sistem gereksinimlerine uyan se\u00e7enektir.<\/p>\n\n\n\n<h3 id=\"what-information-should-i-send-before-requesting-an-mccb-quotation\" class=\"wp-block-heading\">MCCB fiyat teklifi talep etmeden \u00f6nce hangi bilgileri g\u00f6ndermeliyim?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"when-making-an-inquiry-please-provide-the-following-information-rated-voltage-rated-current-required-ka-value-or-expected-short-circuit-current-pole-number-type-of-trip-device-requirement-purchase-quantity-target-market-and-application-scenario-these-details-will-help-the-supplier-recommend-a-more-suitable-mccb-series-for-you-avoiding-blind-recommendations\">Talepte bulunurken l\u00fctfen a\u015fa\u011f\u0131daki bilgileri belirtiniz: nominal gerilim, nominal ak\u0131m, gerekli kA de\u011feri veya beklenen k\u0131sa devre ak\u0131m\u0131, kutup say\u0131s\u0131, istenen kesici cihaz t\u00fcr\u00fc, sat\u0131n al\u0131nacak miktar, hedef pazar ve uygulama senaryosu. Bu ayr\u0131nt\u0131lar, tedarik\u00e7inin size daha uygun bir MCCB serisi \u00f6nermesine yard\u0131mc\u0131 olacak ve geli\u015fig\u00fczel \u00f6nerilerin \u00f6nlenmesini sa\u011flayacakt\u0131r.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction The kA rating refers to the maximum short-circuit current that a circuit breaker can safely interrupt under specified conditions. For MCCB, this value constitutes a part of its interrupting capacity rather than its normal rated operating current. Choosing the correct kA rating helps to prevent the circuit breaker from malfunctioning when the fault current [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":9631,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","rank_math_title":"MCCB kA Rating: How to Choose the Right Breaking Capacity Before You Buy","rank_math_description":"Choose the right MCCB kA rating with clear Icu\/Ics explanations, breaking capacity examples, and a practical checklist for safer selection.","rank_math_focus_keyword":""},"categories":[92],"tags":[],"class_list":["post-9626","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circuit-breakers"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/posts\/9626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/comments?post=9626"}],"version-history":[{"count":2,"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/posts\/9626\/revisions"}],"predecessor-version":[{"id":9635,"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/posts\/9626\/revisions\/9635"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/media\/9631"}],"wp:attachment":[{"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/media?parent=9626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/categories?post=9626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oohmage.com\/tr\/wp-json\/wp\/v2\/tags?post=9626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}