{"id":54395,"date":"2016-06-28T19:03:47","date_gmt":"2016-06-28T16:03:47","guid":{"rendered":"https:\/\/yilkomer.com\/tip-1-2-parafudr-tip-2-farki\/"},"modified":"2026-01-11T21:47:31","modified_gmt":"2026-01-11T18:47:31","slug":"how-do-type-12-bc-class-surge-protectors-differ-from-type-2-class-c-surge-protectors","status":"publish","type":"post","link":"https:\/\/yilkomer.com\/en\/how-do-type-12-bc-class-surge-protectors-differ-from-type-2-class-c-surge-protectors\/","title":{"rendered":"How Do Type 1+2 (B+C) Class Surge Protectors Differ from Type 2 (Class C) Surge Protectors?"},"content":{"rendered":"

Recently, we have witnessed that LV SURGE ARRESTER<\/strong><\/em><\/span><\/a> products, especially among switchgear materials, are being sold far from technical knowledge (like apples and pears). This, as in many issues where trade precedes technique in our country, leads to incorrect protection of systems, damage to the systems of investors and facility owners who are unaware of the issue, and huge financial losses as a result of a possible lightning impulse. Surge arresters technically have many classes, and product selection is of great importance at this point. When we look at the low voltage surge arrester<\/strong> system located inside the panel only as a surge arrester, the issue will lead to serious economic losses in the long run, and above all, it causes our national wealth to melt away for nothing. Protection products must really be selected in accordance with their purpose and used to protect systems. However, it is seen as an insignificant product, especially among switchgear materials, and wrong products are used extensively just because some switchgear companies write their brands on them. As Y\u0131lkomer, we have 2400 types of products in our product range; if the issue were that simple, we would not need so many surge arrester types. Therefore, for the correct product selection, we wanted to summarize the most basic subject of the event, Type 1 Class B<\/strong> <\/span>and Type 2 Class C surge arrester<\/strong> <\/span>subject once again in this article. We think that at least conscious users will read our technical explanations to realize the importance of the issue.<\/p>\n

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Basically, the purpose of use of LV Surge Arresters is to prevent Sudden Overvoltage<\/strong> <\/a>Impulses directed at our system from damaging the entire electrical and automation system. A possible lightning impulse can cause very serious damage. On the other hand, a sudden voltage surge can burn the most important card of our facility. However, these two impulses are different; as engineers, we need to select products according to impulse characteristics by considering all possibilities. Basically, in the literature, LV Surge Arrester<\/strong> products can be divided into 2 basic categories as Surge Protection and Lightning Protection. If it will protect our facility against sudden overvoltage, switching, harmonics, and sudden voltage surges, we can use products with Surge Protection Device<\/strong> <\/em><\/span>features. However, if the subject is lightning, we must use products whose test and characteristic curves have been tested correctly.<\/p>\n

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LV surge arrester systems should be selected as a result of risk analysis.<\/p><\/div>\n

Products protecting against lightning impulses are named Type 1, Class B, Class 1. Products protecting against grid impulses, switching elements, and sudden voltage surges are named Type 2, Class C, Class 2. Products protecting against both impulses are named Type 1+2, Class B+C<\/strong>. Yes, when you look at the products, their types may look the same, but when you look on them, you can see their differences at least basically with letters like T1-T2. The subject has many details. However, you can understand the basic difference primarily by looking at the product. Protection values as T1 and T2 are written on the products. Product protection values may vary according to product feature, impulse power, and usage area, but the basic difference is that they are classified as T1 and T2<\/strong><\/em>. A product with only T2 protection value written on it does not protect against Lightning; on the contrary, when exposed to lightning impulse, it leads to very dangerous results such as melting, explosion, arcing, so the surge arrester class is very important. The same rules apply to AC and DC. If we are going to buy a surge arrester<\/strong> <\/em>and use it in our building entrance panel or in a solar project in an open field, the product must definitely have T1 +T2 protection values.<\/p>\n