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 would recommend to find the answer by contacting technical support team in the country. But somewhere 609472 the breaker it says Icu 20 KA. Reply Hello Jonas, No, your statement is not correct. That is the reason why usually we meet limited number of printed technical information on CBs.
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. Click here to find out how 660947-2 access this document. Example of Resi9 and Eazy9 circuit breakers for residential applications. These CBs are intended for use of indoor, 60974-2 and humidity-free conditions: You should contact the technical support of Schneider Electric in your country.
For certain specific applications for example traction, rolling mills, marine service particular or additional requirements may be necessary.
With additional requirements for integrally fused circuit-breakers. They are both standards that specify requirements for low-voltage bx breakers. Supplementary requirements for circuit-breakers used as direct-on-line starters are given in IECapplicable to low-voltage hs and starters. Thanks for your reply. For example on the C60N. I was aware of the IEC standards of identical designations but didn’t know British Standards had adopted them.
IEC 60898-1 and IEC 60947-2: a tale of two standards
Posting a message to the forum will remove the above advertisement. Reply i like this Reply I have never confused them yet maybe because its not much since I started working. All in all there are so many interrupting ratings that I am so confused.
IECenn I introduced at length in the first of these blog postsgoverns CBs for industrial applications. Which one if for homes, which one for industry?
I want to ask you that. Hello Yogesh, you can download them from IEC official website: Just those basic tech specs tell us how different the use of circuit breakers defined by our two standards are. NOTE Circuit-breakers which are dealt with in this standard may be provided with devices for automatic opening under predetermined conditions other than those of over-current and undervoltage as, for example, reversal of power or current.
The standard states that the top rated current is A, while the lowest is 6A and maximum value of rated short-circuit capacity Icn is 25kA. The requirements for circuit-breakers not fulfilling the requirements for over-current protection are contained in Annex L. Yes, my password is: Unfortunately I found no value for Icu there. Yes Hagar and Eaton will make devices to both Standards so when filling out certs we should be stating MCBs are installed.
Assuming the breaker is a 3 phase VAC, 63A.
Kevin, You should keep it simple: This standard does not deal with the verification of operation under such pre-determined conditions. Featured Bloggers Atin Chhabra. Share This Page Tweet. These are all written into the Standard so if you are installing MCBs in to areas of a Polution Level 3 then that circuit breaker is not fit for purpose. One more question regarding RCCB. Example of Acti9 circuit breaker used for buildings and industry applications. In fact it is about the same, eg.
Dear Sumedha, Test procedures are explained in the mentioned standards. No, create an ba now. Reply I am confused with two standards for the same breaker. Icu, Ics, Ue, Uimp, pollution 609477-2, ect. Kindly let me know if it is available on the Schneider site appreciate if Schneider can up load a youtube video Reply Dear Sumedha, Ns procedures are explained in the mentioned standards.
As for IECit relates to the a.
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So how many are aware of the difference between these two Standards? Reply Thanks for your reply. The requirements and test methods for electromagnetic compatibility of circuit-breakers are contained in Annex J.
It applies whatever the rated currents, the method of construction or the proposed applications of the circuit-breakers may be. IEC requires 4kV, in line with the use for final circuits. I am confused with two standards for the same breaker. But happen it does.