{"id":2858,"date":"2020-11-24T09:00:39","date_gmt":"2020-11-24T17:00:39","guid":{"rendered":"https:\/\/www.linquip.com\/blog\/?p=2858"},"modified":"2023-10-02T00:34:30","modified_gmt":"2023-10-02T08:34:30","slug":"types-of-mcb","status":"publish","type":"post","link":"https:\/\/www.linquip.com\/blog\/types-of-mcb\/","title":{"rendered":"All Types of MCB: Features and Application of MCB+ PDF | Linquip"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#What_is_MCB\" >What is MCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#Features_of_MCB\" >Features of MCB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#Different_Types_of_MCB_Based_on_their_Trip_Curves\" >Different Types of MCB Based on their Trip Curves<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#Types_of_MCBs_based_on_the_number_of_poles\" >Types of MCBs based on the number of poles<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#Types_of_MCB_amps_Ratings\" >Types of MCB amps Ratings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#MCB_vs_fuse\" >MCB vs fuse<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#Selection_procedure\" >Selection procedure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#What_Is_the_Working_Principle_of_MCB\" >What Is the Working Principle of MCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#MCB_Applications\" >MCB Applications<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#Are_There_Any_Disadvantages_to_MCB\" >Are There Any Disadvantages to MCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.linquip.com\/blog\/types-of-mcb\/#Download_Types_of_MCB_PDF\" >Download Types of MCB PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p><span style=\"font-weight: 400;\">As you may know, MCBs are tiny devices that act as controlling agents during an unusual supply of power. This mechanism cuts off an electrical system as soon as it detects an overload or a power surge. Generally, it finds use as a replacement for a fuse. Depending upon the nature of the electrical applications, you can incorporate different <\/span><span style=\"font-weight: 400;\">types of MCB<\/span><span style=\"font-weight: 400;\"> in your residences and in industries. Read this new blog in Linquip to find out more about them.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Depending on your application or requirement, Linquip can provide you with all the information you need to make an informed decision on the MCB equipment you need. Here at Linquip, we will answer any questions you have regarding MCB. You can begin by reading the Linquip article &#8220;<\/span><b>What Is MCB<\/b><span style=\"font-weight: 400;\">?&#8221;.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Are you looking for MCB devices? You can browse a wide range of <\/span><b>MCB products<\/b><span style=\"font-weight: 400;\"> for free at Linquip. Where do you intend to buy MCB products? Linquip offers free access to all <\/span><b>MCB Devices for Sale<\/b><span style=\"font-weight: 400;\">. You can also contact Linquip to inquire about MCB equipment or device prices and receive free quotations from <\/span><b>MCB suppliers and companies<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_MCB\"><\/span><strong>What is MCB?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">MCB or <\/span><span style=\"font-weight: 400;\">miniature circuit breaker<\/span><span style=\"font-weight: 400;\"> is an electromechanical device that protects an electric circuit. It prevents damage to an electrical circuit as a result of excess current.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MCBs are protective devices that break the circuit in case of overload or short <\/span><span style=\"font-weight: 400;\">circuit<\/span><span style=\"font-weight: 400;\">s<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MCB works based on either the bi-metallic strip or by a magnetic trip coil. Both methods work by deflecting the latch attached to stop the flow of current. While the bimetallic piece gets heated, the magnetic coil uses the magnetic flux and deflects the latch to open the circuit.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">An MCB is a better alternative to a fuse since it does not require replacement once an overload is detected. Unlike a fuse, an MCB can be easily operated and thus offers improved operational safety and greater convenience without incurring a large operating cost.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In older small circuits that take less current used fuses to provide protection, and today MCB in these less current consuming circuits takes the place of fuses.<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-2860 size-full\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/023595-emea_-_seo_guide_images_-_jan_2020_mcbs-e1604401518428.jpg\" alt=\"types of MCB - Linquip\" width=\"700\" height=\"413\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/023595-emea_-_seo_guide_images_-_jan_2020_mcbs-e1604401518428.jpg 700w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/023595-emea_-_seo_guide_images_-_jan_2020_mcbs-e1604401518428-300x177.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/023595-emea_-_seo_guide_images_-_jan_2020_mcbs-e1604401518428-696x411.jpg 696w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Features_of_MCB\"><\/span>Features of MCB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">These are some features of the MCB:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Its current rating is a hundred amperes.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">It operates thermally.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Usually, its tripping is not controllable.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">MCB can be easily operated and thus offers improved operational safety and greater convenience without incurring an expensive operating cost.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">They find use to protect lower current circuits and have the following specifications:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Current rating \u2013 Amperes<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Short Circuit Rating \u2013 Kilo Amperes (kA)\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Operating Characteristics \u2013 B, C, D, Z or K Curves<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_17202\" aria-describedby=\"caption-attachment-17202\" style=\"width: 632px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-17202\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/parts.-png.webp\" alt=\"types of mcb\" width=\"632\" height=\"385\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/parts.-png.webp 632w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/parts.-png-300x183.webp 300w\" sizes=\"(max-width: 632px) 100vw, 632px\" \/><figcaption id=\"caption-attachment-17202\" class=\"wp-caption-text\">Parts of an MCB (Reference: <strong>electricalidea.com<\/strong>)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Different_Types_of_MCB_Based_on_their_Trip_Curves\"><\/span>Different Types of MCB <span style=\"font-weight: 400;\">Based on their Trip Curves<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Type B MCB<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Type C MCB<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Type D MCB<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Type K MCB<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Type Z MCB<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">There are various types of MCB <\/span><span style=\"font-weight: 400;\">according to tripping over the range of fault current.<\/span><span style=\"font-weight: 400;\"> Each type is responsive to the likely strength of electrical surges in different settings and a particular load of power. Several different kinds of MCB are available:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Types A, B, C, D, K, and Z. <\/span><span style=\"font-weight: 400;\">However, the three crucial versions are type B, type C, and type D.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">These variations are typically known as their \u2018trip curve\u2019, also known as their tripping attributes that are the range of tripping fault current at which the device operates in the event of a short circuit or overload.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Let\u2019s take a look at the differences between each type:<\/span><\/p>\n<h3>Type B MCB<\/h3>\n<p><span style=\"font-weight: 400;\">B types trip if the current flowing through hits between three and five times the recommended maximum.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Type B is the most sensitive <\/span><span style=\"font-weight: 400;\">types of MCB<\/span><span style=\"font-weight: 400;\">, designed for domestic and low voltage commercial settings where any current surges are likely to be small like lighting circuits, home wirings, etc.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><b>Functions of Type B MCB<\/b><span style=\"font-weight: 400;\"> are protection for people and big-length cables in TN and IT systems.<\/span><\/li>\n<\/ul>\n<h3>Type C MCB<\/h3>\n<p><span style=\"font-weight: 400;\">C types trip at currents between five and ten times their rated load. They find use in commercial or industrial types of applications where there could be chances of higher values of short circuit currents in the circuit.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Good examples include smaller electric motors, fans, fluorescent lighting, small transformers, pilot devices, control circuits, coils, etc.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><b>Functions of Type C MCB<\/b><span style=\"font-weight: 400;\"> are protection for resistive and inductive loads with low inrush current.\u00a0<\/span><\/li>\n<\/ul>\n<h3>Type D MCB<\/h3>\n<p><span style=\"font-weight: 400;\">D type MCBs are the least sensitive type, only activating when current surges to between ten and twenty times the recommended maximum.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00a0Examples include welding equipment, X-ray machines, UPS systems, large motors, uninterruptible power supply units, industrial welding equipment, etc.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><b>Functions of Type D MCB<\/b><span style=\"font-weight: 400;\"> are protection for circuits that supply loads with high inrush current at the circuit closing (transformers, breakdown lamps).\u00a0<\/span><\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"size-full wp-image-2861\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/20180727145824_53856.jpg\" alt=\"types of MCB - Linquip\" width=\"700\" height=\"700\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/20180727145824_53856.jpg 700w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/20180727145824_53856-300x300.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/20180727145824_53856-150x150.jpg 150w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/20180727145824_53856-696x696.jpg 696w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/20180727145824_53856-420x420.jpg 420w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<h3><strong>Type K MCB<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Type K trip when the current reaches 8 to 12 times than the rated current with an operating time of less than 0.1 Second. These are used for inductive loads which have a chance of high inrush currents. They are also a good choice for motors.<\/span><\/p>\n<h3><strong>Type Z MCB<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Type Z MCBs are highly sensitive MCBs that operate for a current value between 2 to 3 times the rated current with an operating time of less than 0.1 Second. They are used with more delicate devices prone to short circuits, such as semiconductors.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Type A, K, and Z MCBs have extremely small operating times compared to type B, C, and D MCBs. Class A, K, and Z are highly sensitive breakers that operate very quickly in a short time used to protect sensitive devices.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The tripping current and operating time of each of the above MCB types are given in the table below.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Type<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tripping Current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Operating Time<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Type B\u00a0\u00a0<\/b><\/td>\n<td><span style=\"font-weight: 400;\">3 To 5 times the full load current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.04 To 13 Sec<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Type C\u00a0\u00a0<\/b><\/td>\n<td><span style=\"font-weight: 400;\">5 To 10 times the full load current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.04 To 5 Sec<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Type D\u00a0\u00a0<\/b><\/td>\n<td><span style=\"font-weight: 400;\">10 To 20 times the full load current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">0.04 To 3 Sec<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Type K\u00a0\u00a0<\/b><\/td>\n<td><span style=\"font-weight: 400;\">8 To 12 times the full load current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&lt;0.1 Sec<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Type Z\u00a0\u00a0<\/b><\/td>\n<td><span style=\"font-weight: 400;\">2 To 3 times the full load current<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&lt;0.1 Sec<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_MCBs_based_on_the_number_of_poles\"><\/span><strong>Types of MCBs based on the number of poles<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Single Pole MCB<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Double pole MCB<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Triple Pole MCB<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Three poles with a neutral\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Four Poles<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_17203\" aria-describedby=\"caption-attachment-17203\" style=\"width: 728px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-17203\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/MCBs-with-Different-poles.jpg\" alt=\"types of mcb\" width=\"728\" height=\"272\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/MCBs-with-Different-poles.jpg 728w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/MCBs-with-Different-poles-300x112.jpg 300w\" sizes=\"(max-width: 728px) 100vw, 728px\" \/><figcaption id=\"caption-attachment-17203\" class=\"wp-caption-text\">Types of MCB according to different poles (Reference: <strong>electronicshub.org<\/strong>)<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Another way of classifying MCBs is on the number of poles they have which are as follows.<\/span><\/p>\n<h3><strong>Single Pole MCB<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">A single-pole circuit breaker has one switch and also protects a single phase of the circuit.<\/span><\/p>\n<h3><strong>Double pole MCB<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">The double pole circuit breaker has two switches and also protects two-phase and neutral.<\/span><\/p>\n<h3><strong>Triple Pole MCB<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">A three-pole circuit breaker has three switches, and they also protect the three phases.<\/span><\/p>\n<h3><strong>Three poles with a neutral<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Three poles and a neutral circuit breaker protect the three phases of the circuit. It also has a neutral switch.<\/span><\/p>\n<h3><strong>Four Poles<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">A four-pole MCB contains four switches, three phases, and a neutral. But unlike the three poles with neutral, the four poles protect all the phases and the neutral. They are used in places with an unbalanced circuit.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_MCB_amps_Ratings\"><\/span><strong>Types of MCB amps Ratings<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The current rating is the value of <\/span><span style=\"font-weight: 400;\">the <\/span><span style=\"font-weight: 400;\">current over which <\/span><span style=\"font-weight: 400;\">the <\/span><span style=\"font-weight: 400;\">breaker gets tripped. <\/span><span style=\"font-weight: 400;\">The <\/span><span style=\"font-weight: 400;\">Rated current of the MCB to be used depends on the load current of the equipment to be protected. For <\/span><span style=\"font-weight: 400;\">a<\/span><span style=\"font-weight: 400;\"> typical MCB, this rating is 6 amperes to 125 amperes. They are available in the following ratings: 6A, 10A, 16A, 20A, 25A, 32A, 45A, 50A, 63A, 80A, 100A, 125A.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For example, if you use AC in your house, then it is advisable to use a 20 amps MCB, and for regular lights and fans, 6amps should do just fine.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The following lists some of the most frequently encountered load capacities for commercial MCBs:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">6 amps<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">10 amps<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">16 amps<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">20 amps<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">25 amps<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">32 amps<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"MCB_vs_fuse\"><\/span><strong>MCB vs fuse<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">MCB lasts for a long time, while the fuse gets damaged after a single trip.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Unlike a fuse, MCB has a plastic enclosure that covers the metallic conductor.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">MCB has a switch, unlike fuse.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">MCBs are easy to restart after tripping while the fuse must be changed.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_17204\" aria-describedby=\"caption-attachment-17204\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-17204\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/mcb-vs-fuse.jpg\" alt=\"types of mcb\" width=\"800\" height=\"600\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/mcb-vs-fuse.jpg 800w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/mcb-vs-fuse-300x225.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/mcb-vs-fuse-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-17204\" class=\"wp-caption-text\">Fuse vs. MCB (Reference: <strong>hplindia.com<\/strong>)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Selection_procedure\"><\/span><strong>Selection procedure<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Now that you know about the types of MCB, you should analyze the kind that would best suit your household device. Before choosing the type of MCB, it is essential to find out a few technical details. First, check what voltage and frequency with which the device functions, like if it is AC or DC. Next, note the starting current load and trip characteristics. Additionally, see if there are any extra features like a manual or automatic reset and safety approvals. Sometimes, the operating conditions, like the temperature, corrosion, and radiation, may contribute to choosing the correct MCB. Although the current rating is the primary deciding factor, it is better to analyze other factors before investing in the MCB as it plays an important role in preventing electrical hazards at your place.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_the_Working_Principle_of_MCB\"><\/span><b>What Is the Working Principle of MCB?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">As a result of an overflow of current through an MCB, the bimetallic strip becomes heated and deflects by bending. By deflecting the bi-metallic strip, the latch is released. By stopping the flow of current in the circuit, the latch causes the MCB to turn off.<\/span><\/p>\n<figure id=\"attachment_17205\" aria-describedby=\"caption-attachment-17205\" style=\"width: 490px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-17205\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/working.jpg\" alt=\"types of mcb\" width=\"490\" height=\"279\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/working.jpg 490w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/working-300x171.jpg 300w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><figcaption id=\"caption-attachment-17205\" class=\"wp-caption-text\">Working principle of an MCB (Reference: <strong>electricaltechnology.org<\/strong>)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"MCB_Applications\"><\/span><strong>MCB Applications<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">MCB performs many functions such as local control switches, isolating switches against faults, and overload protection devices for installations or specific types of equipment or appliances.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MCB is vital for the efficient functioning and maintaining the safety of the electric machines. Thus, it finds use in most electrical appliances, be it for domestic usage or industrial purposes. The multitude of electric connections at home like lights, heater, and fans require MCB to check and protect them.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ideally, <\/span><span style=\"font-weight: 400;\">types of MCB<\/span><span style=\"font-weight: 400;\"> are an excellent solution for homes, buildings, and commercial areas with less equipment. The effective installation of MCBs can ensure the safety and protection of all the electrical systems across households and industries. Here are examples of <\/span><span style=\"font-weight: 400;\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Circuit_breaker#Low-voltage\" target=\"_blank\" rel=\"noopener noreferrer\">MCB<\/a> uses<\/span><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\">\n<h3><strong>Home Electrical Panels<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">MCBs protect homes from overload. Due to their capacity to handle large amounts of electricity, they are much more reliable and safer than a fuse. One of its advantages is that it ensures equal distribution of electrical energy across all the devices. There will be lesser instances of power fluctuations inside the house.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\">\n<h3><strong>Heaters<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">MCBs are a dependable safety solution if you have installed heaters in your home or office. With a successful installation of an MCB, you can avoid heaters from developing high voltage fluctuations as it draws a large amount of power from the main supply.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\">\n<h3><strong>Lights<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Every household has an extensive lighting system. MCBs can play a significant role in the effective distribution of electricity across all the lighting systems of the house. For instance, the operation of fluorescent lamps requires large amounts of electricity as compared to light bulbs. Here is where MCBs come to the rescue. Additionally, MCBs help in maintaining the quality and safety of light bulbs.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\">\n<h3><strong>Industrial Applications<\/strong><\/h3>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">MCBs can provide an impressible safety mechanism in small-scale as well as large-scale industries. Ideally, most of the machinery in industries requires up to 30 kA of power supply. In such a case, there is a need to switch to MCBs from old fuses. In commercial establishments, <\/span><span style=\"font-weight: 400;\">types of MCB<\/span><span style=\"font-weight: 400;\"> play a key role in maintaining the efficiency of the applications and installations by optimizing its energy flow. They find use in hotels, supermarkets, and bakeries.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Are_There_Any_Disadvantages_to_MCB\"><\/span>Are There Any Disadvantages to MCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Here are some disadvantages of MCB:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MCBs are more expensive than fuses. In general, an MCB distribution board is more costly than a rewireable fuse board. The probability of overloading the circuit is eliminated by operating by someone who is unqualified.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">So, there you have a detailed description of different <\/span><span style=\"font-weight: 400;\">types of MCB<\/span><span style=\"font-weight: 400;\"> and their characteristics. If you enjoyed this article in Linquip, let us know by leaving a reply in the comment section. Is there any question we can help you through? Feel free to <a href=\"https:\/\/www.linquip.com\/sign-up?client_redirect=\/\" target=\"_blank\" rel=\"noopener noreferrer\">sign up<\/a> on our website to get the most professional advice from our experts.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Download_Types_of_MCB_PDF\"><\/span><strong>Download Types of MCB PDF<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To get immediate access to this content, you can download it as a PDF document.<\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/11\/linquip.com-The-Ultimate-Guide-to-Knowing-Everything-About-All-Types-of-MCB.pdf\" class=\"su-button su-button-style-default su-button-wide\" style=\"color:#FFFFFF;background-color:#2D89EF;border-color:#246ec0;border-radius:12px\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color:#FFFFFF;padding:0px 30px;font-size:22px;line-height:44px;border-color:#6cadf4;border-radius:12px;text-shadow:none\"> Download PDF<\/span><\/a><\/div>\n<h3><b>Buy Equipment or Ask for a Service<\/b><\/h3>\n<p>By using Linquip RFQ Service, you can expect\u00a0to receive quotations from various suppliers across multiple industries and regions.<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"http:\/\/linquip.com\/get-quote?utm_source=blog&amp;utm_medium=content&amp;utm_campaign=product_list&amp;utm_term=product_list&amp;utm_content=rfq\" target=\"_blank\" rel=\"noopener\">Click Here to Request a Quotation From Suppliers and Service Providers<\/a><\/strong><\/p>\n<p><strong><em>Read More In Linquip<\/em><\/strong><\/p>\n<ul>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.linquip.com\/blog\/vacuum-circuit-breakers\/\" target=\"_blank\" rel=\"noopener\">A good look at\u00a0Vacuum Circuit Breakers<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.linquip.com\/blog\/types-of-circuit-breaker\/\" target=\"_blank\" rel=\"noopener\">Types of Circuit Breaker: A Basic Guide to Know Different Classifications<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.linquip.com\/blog\/difference-between-isolator-and-circuit-breaker\/\" target=\"_blank\" rel=\"noopener\">Difference Between Isolator and Circuit Breaker: Ultimate Guide<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.linquip.com\/blog\/difference-between-relay-circuit-breaker\/\" target=\"_blank\" rel=\"noopener\">Difference Between Relay and Circuit Breaker: Everything You Need to Know<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; 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Generally, it finds use as a replacement for a fuse. Depending upon the nature of the electrical applications, &#8230;<\/p>\n","protected":false},"author":4,"featured_media":32760,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[21],"tags":[],"class_list":["post-2858","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical-component"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/2858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/comments?post=2858"}],"version-history":[{"count":9,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/2858\/revisions"}],"predecessor-version":[{"id":19288,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/2858\/revisions\/19288"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media\/32760"}],"wp:attachment":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media?parent=2858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/categories?post=2858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/tags?post=2858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}