Telephone: +41 22 02 11 Telefax: +41 22 03 00 E-mail: [email protected] Web: INTERNATIONAL. STANDARD. IEC. Third edition. So how many are aware of the difference between these two Standards? I had these highlighted to me a few years ago and it was news to me. BS EN applies to circuit-breakers, the main contacts of which are intended to be connected to circuits, the rated voltage of which.

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I had these highlighted to me a few years ago and it was news to me. Amends and replaces BS EN The most suitable solution for use are MCBs wn with both standards as their performance meets requirements of use for residential installations and high enough for use in industry and infrastructure applications.

IEC 60898-1 and IEC 60947-2: a tale of two standards

Dear Koks, Yes it is safe choice. Reply I am confused with two standards for the same breaker. No, create an account now. Share This Page Tweet. If you need 15kA accordingplease check with local offer available, typically it is range of C You can download them from official standardization bureau sites. Utilities and manufacturing facilities use them: Consequences can be dire if residential CBs are used instead of industrial ones.

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This is the reason why manufacturers in addition provide a wide scope of different curves: Reply Dear Amey, If I understood your question well, the difference comes from ratio of nominal Icn and ultimate Icu breaking capacities ratio to service breaking capacity Ics. Supplementary requirements for circuit-breakers used as direct-on-line starters are given in IECapplicable to low-voltage contactors and starters.

Also as i am new, how do i calculate my trip current?

I am confused with two standards for the same breaker. That notion, combined with lack of knowledge or technical expertise, may have led to the misconception that there is one standard for all CBs.

The requirements for circuit-breakers for equipment for example electrical appliances are contained in IEC They are both standards that specify requirements for low-voltage circuit breakers. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.

For example dn the C60N. But somewhere on the breaker it says Icu 20 KA.

BS EN Low-voltage switchgear and controlgear. Circuit-breakers

IEC requires 4kV, in line with the use for final circuits. Procurement managers in utilities, hs, can get things wrong. Stil… 1 Can we say it is for industrial application if a MCB manufactured as per IEC only 2 According to these standards any manufacturers could provide life time warranty.

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Kevin, You should keep it simple: Posting a message to the forum will remove the above advertisement.

British Standards

Really very useful information. I would recommend to find the answer by contacting technical support team in the country.

Is this breaker fit for purpose along with Micrologic 2. Be requirements and test methods for electromagnetic compatibility of circuit-breaker auxiliaries are contained in Annex N. I can say is that mix-ups of standards happen.

BS EN – Low-voltage switchgear and controlgear. Circuit-breakers

Unfortunately 60947- found no value for Icu there. Want access to British Standards? My thinking is that by nature AC signals reverse polarity each cycle and therefore it would not matter which way the MCB was wired.

In fact it is about the same, eg. Understand that is making capacity and not Short Circuit capacity.