ICU and ICN. Call: +44 (0) 203 327 3140, SAI Global Australia Pty Ltd ABN 14 144 974 087. The technical storage or access that is used exclusively for statistical purposes. on circuits with high start up currents, e,g. Aging of Plastic covers, degradation of Bi-metals / Springs & No calibration for a long time as if it a life time product. as per 60947-2: Icu=10kA with Ics = 75% =>7,5kA IEC60947-2 used by MCCBs and IEC60898-1 are used by MCBs, is that correct? Yes the standard AC MCBs can be used on DC applications. 86 0 obj << /Linearized 1 /O 88 /H [ 781 596 ] /L 387011 /E 7872 /N 16 /T 385173 >> endobj xref 86 18 0000000016 00000 n 0000000708 00000 n 0000001377 00000 n 0000001531 00000 n 0000001714 00000 n 0000001783 00000 n 0000001963 00000 n 0000004098 00000 n 0000004782 00000 n 0000004990 00000 n 0000005194 00000 n 0000005878 00000 n 0000005957 00000 n 0000006859 00000 n 0000006936 00000 n 0000007015 00000 n 0000000781 00000 n 0000001355 00000 n trailer << /Size 104 /Info 82 0 R /Root 87 0 R /Prev 385163 /ID[<51dc6bc32fd9980bc78bbfa183e7659f><51dc6bc32fd9980bc78bbfa183e7659f>] >> startxref 0 %%EOF 87 0 obj << /Type /Catalog /Pages 84 0 R /Outlines 81 0 R >> endobj 102 0 obj << /S 562 /O 680 /Filter /FlateDecode /Length 103 0 R >> stream They protect electrical power distribution of up to 1000 volts a.c. and 1500 volts d.c. with an entire spectrum of rated currents from 0,5 to 6300A. Hi im looking for an MCB with the following specs please let me know if schneider offers one; standards IEC/EN 60898-1 You should keep it simple: residential installations IEC60898-1, industry and commercial buildings IEC60947-2 & IEC60898-1. Available format (s): Hardcopy, PDF. Post a Comment. Detailed information you can find following the link, pages 2 and 3: Thanks so much for the reply very useful info. Circuit-breakers to BS EN 60898-1 can also comply with BS EN 60947-2 but the short-circuit breaking capacity of each may be different. In response to the question Whats the difference between standards IEC 60898-1 and IEC 60947-2?, Im tending to answer with another question: What do they have in common? Shall any where mention on BS or IEC that we need to do Field Trip Test for each MCBs type B,C,D .We are using SCHNEIDER MCB,s and the project is for housing. CNY VoidH. Please contact our Customer Service Team. This Standard has been added successfully to your Watchlist. I am confused with two standards for the same breaker. In your given example its not exactly as you name it: for iC60N range the 50kA Icu is only for breakers in range of 0,5-4A, for the rest of the range it is 10kA. DKK Miniature circuit breakers that protect above 1,000 amp. We use Siemens breakers and they have a SCCR rating of 10KA as per IEC 60898. Dear Max, you should verify the inrush current of the inductive load first. rated current 63A, Those basic tech specs alone tell us just how different the use of circuit breakers (CBs) are as defined by the two standards. Really very useful information. It may not display this or other websites correctly. They are suitable for Pollution Level 3, which includes unheated rooms, boiler rooms, industrial and farming areas. The rated voltage currently required in industrial use CBs is 400 V, 440 V, 690 volts, or higher values up to 1000 V. Compare those numbers to the usual value 230V/400 V for residential MCBs. The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes. Can BS EN 60898-1 be used instead of BS EN 60947-2? Curve D is developed for applications with high inrush currents, i.e., transformers, power supplies, and heaters. The figures in these tables can be used for design purposes. Under IEC 60947 they do not mention any SCCR rating . Guide for the selection of circuit breakers with reference to their rated voltage. No, your statement is not correct. But Im still confused in case of MCBs that have 2 condition of breaking capacity depend on which IEC that MCB comforting to, Lets take an example of MCB iC60N Applies to a.c. air break circuit breakers for operation at 50 Hz aor 60 Hz with rated voltage not exceeding 440V (between phases), a rated current not exceeding 125 A and a rated short circuit capacity not exceeding 25,000 A. Advantages and disadvantages of star and delta connection. They should disconnect automatically as soon as the combination of the current rise and duration causes the cable or a component to heat up excessively. (iC60N, 6 to 63 A, 380415 V AC 50/60 Hz): Copy. They are used for the protection of highly sensitive devices such as semiconductor devices. on circuits with high start up currents, e,g. so for example we need to add the load up of all the downstiars lighting circut together to determine the full load, then determine the size of the cable? Examples of terminalsG. select protection device according to the cable size. However, fuses remain a highly effective option for overcurrent protection. I can say is that mix-ups of standards happen. You are using an out of date browser. Definitions3. NOK Where cbs made by a different manufacturer are to be installed, verification will have to be undertaken by the manufacturer of the distribution board to BS EN 61439-2 or BS EN 61439-3. Please enter a valid email address, Problem with captcha verification, please check your connection, IEC 60898-1 and IEC 60947-2: a tale of two standards, https://www2.schneider-electric.com/corporate/en/careers/jobs-with-us/jobs-with-us.page, https://www2.schneider-electric.com/sites/corporate/en/products-services/product-launch/acti9/acti9-ic60.page, https://blog.se.com/power-management-metering-monitoring-power-quality/2013/07/16/iec-60947-2-the-all-risk-insurance-for-circuit-breakers/, https://webstore.iec.ch/publication/21972. It is a mechanical device that disturbs the flow of high magnitude (fault) current and in additions performs the function of a switch. Yes it is safe choice. Welcome to ElectriciansForums.net - The American Electrical Advice Forum. Required fields are marked *. You have selected more than three (3) trainings. You already added this Product in the Watchlist. DC breaking conditions are different than AC. Marking and other product information6. Typically IEC 60898-1 certified circuit breakers meet required performance to prove proper protection of household installations: Pollution degree 2, impulse voltage 4kV, isolation voltage is the same as nominal voltage 400V. If i need a MCB IEC60898-1: 15KA, is there such product from Schneider? break capacity of 6kva, What electrical contractors need to consider when installing heat pumps | NAPIT, Taking a focus on EVCP installations NAPIT offers top tips for EV installers, NAPIT Top 10 EV Tips Guide | Top Product Award 2022, NICEIC Pocket Guide App | Top Product Award 2022, The importance of omitting RCDs in accordance with BS 7671: 2018+A2:2022 | NAPIT, The importance of registration for electrical inspection and testing | NAPIT, NAPIT welcomes update to Welsh Government Guidance. Discuss type and ratings of BS EN 60898 circut breakers in the Electrical Forum area at ElectriciansForums.net, Reply to type and ratings of BS EN 60898 circut breakers in the Electrical Forum area at ElectriciansForums.net. Please Login or Create an Account so you can add users to your Multi user PDF Later. When Zs tests are carried out at an ambient temperature of 10C, the conductors being tested may be assumed to be also at 10C. For example, the BS EN 60898-1 standard describes B, C and D operating curves with ratio to rated current. You must replace a fuse once it serves its purpose, but circuit breakers operate via a switch that you simply reset. Good for making Technical specification for electrical tender. Special requirements for auxiliary circuits for safety extra-low voltageF. There will be circumstances where a designer has specified requirements which are particular to an electrical installation. Classification of circuit-breakers into energy limiting classesZB. Utility procurement managers can also get things wrong. Although cbs from different manufacturers may appear similar, the technical performance, dimensions and terminations are not always compatible. Stil Are AC MCBs polarity sensitive? Designed to protect circuits that need a very low short circuit trip setting (Ex: Semiconductors), Designed for cable protection (Ex: Control circuits, lighting), Designed for medium magnetic startups (Ex: Lighting panels, control panels), Designed to allow for high inrush loads (Ex: Motor or transformation circuits). So what is your opinion of using MCCB-947 & MCB-898 in a single distribution for a residential/commercial buildings. In any case you should pay attention on technical characteristics of devices like: Icu, Ics, Ue, Uimp, pollution degree, ect. Kevin, HKD .. @Praseet > Thank you for your interest in our company. One more question regarding RCCB. In fact it is about the same, eg. Do you have DP breakers IEC certified for industrial application and 10 KA rated? AUD Answer (1 of 5): [1] DISADVANTAGES:- Expense While inexpensive options exist, low-cost MCBs offer limited protection against short circuits. Cmin = the voltage variation factor (usually 0.95). hi Vladislav, For more than 20 copies, please contact ourCustomer Supportteam on+44 (0)203 327 3140. Hello Vlad, our customer need 10kAIC circuit breaker for Lighting / C.O. electrical life not less than 6000 That notion, combined with a lack of knowledge or technical expertise, may have led to the misconception that there is only one standard for all CBs. But happen it does. As higher this value as more robust breaker to withstand Ics. Also any problem occurs if using IEC898 MCB in industrial applications. Icu is given only for range 5SY8. 60898 is an IEC standard; there are two parts. SGD In other words in the final distribution electrical switchboards of buildings in which the nominal current does not exceed 125A. Testing a 4mm radial circuit today or so I Hi i am trying to figure out if there is any requirement for ip ratings for sockets in a shed. to answer to ricki comment to use of MCB in DC current. They are suitable for Pollution Level 2 and their classifications and applications are shown in Tables 1a, and 1b. BS 3871 Part 1 was withdrawn on the 1st July 1994. It is higher because of lower Icu breaking capacity ratio to service breaking capacity Ics, eg. The technical storage or access that is used exclusively for statistical purposes. Test sequences and number of samples to be submittedfor certification purposesD. With circuit breakers, you simply flip the switch again and move on with your day. 448A, FLA is abt. Tests8.1 Type tests and routine tests8.2 Test conditions8.3 Indelibility of marking8.4 Reliability of screws, current-carrying parts and connections8.5 Reliability of terminals for external conductors8.6 Protection against electric shock8.7 Dielectric properties8.8 Temperature rise and power loss8.9 28-day test8.10 Tripping characteristics8.11 Mechanical and electrical8.12 Short-circuit8.13 Resistance to mechanical shock and impact8.14 Resistance to heat8.15 Resistance to abnormal heat and to fire8.16 Resistance to rustingFiguresA. I have mid eighties Looks like someone wants their homework doing. For more than 20 copies, please contact ourCustomer Supportteam on+44 (0)203 327 3140. The trip curve shows the estimated tripping time of the circuit breaker. Please contact our Customer Service team on Email: This product cannot be added to your cart right now. Calculate the maximum measured Z s. Solution From Table B6 of the OSG, the maximum measured Z s value is1.75 at an ambient temperature of 10 o C. A star-delta starter is the most commonly used method for the stating of 3 . 16kA due to the length of the service cable. Curve Z is developed for applications with very low inrush currents. All current amendments available at time of purchase are included . If the field of installation is commercial buildings or industry, Icu=10kA is proper solution. Superseded date: 09-09-2003. By creating an account you agree to the Hunker, Advantages and Disadvantages of Circuit Breakers and Fuses. IEC 60947-2 governs circuit breakers (CBs) for industrial applications. IEC 60947-2 the all-risk insurance for circuit breakers Part 1, IEC 60947-2 the all-risk insurance for circuit breakers Part 2, IEC 60947-2 the all-risk insurance for circuit breakers Part 3, How Todays Electrical Standards can help Improve Safety in Existing Dwellings. In contrast, Table 41.3 of BS 7671 gives values suitable for all BS EN 60898 MCBs and BS EN 61009-1 RCCBOs. can we use all AC MCB in DC voltage? I have a customer that requested kwh meters on the socket circuits of an office lock he rents out,(rooms are rented separately). MCB is a miniature circuit breaker and MCCB is a molded case circuit breaker. https://blog.se.com/power-management-metering-monitoring-power-quality/2013/07/16/iec-60947-2-the-all-risk-insurance-for-circuit-breakers/, Dear sir, BS EN 60898-1-2003+A .. Electrical accessories - Circuit breakers for overcurrent protection for household and similar installations - Part 1: Circuit-breakers for a.c. operation 2003-09-09 The NICEIC just say refer to manufacturer, but I cant find the information for 60947-3 mcbs starting from 2A and also for a lot of the motor starters GV2,3 etc etc. You have selected more than three (3) participants. Although some may consider them old-fashioned, fuses are still legal to use and represent a good option for overcurrent protection, especially if your home already has a fuse box. How to verify MCB functioning well on site? motors, you would select a type c or d. then you work out your Zs for the circuit and make sure it's below the max. Draft Amendment 1 to IEC 60898-2: Circuit-breakers for overcurrent protection for household and similar installations Part 2: Circuit-breakers for a.c and d.c. operation In industrial applications can be used breakers certified as per IEC 60947-2 or IEC 60947-2 and 60898 both. I mean Schneider MCBs. Dear Koks, 01-01-1991, Publisher: Assuming the breaker is a 3 phase 230VAC, 63A. You should contact the technical support of Schneider Electric in your country. The metal either melts or it does not. These certified CBs are intended for indoor use, and under pollution and humidity-free conditions: households or similar installations where overcurrent protection will not likely be maintained by unskilled users. General2. 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Curve C is developed for applications with moderate inrush currents such as lighting, control circuits, and coils, computers, and appliances. In the absence of such data the inspector should apply the requirements set out in BS 7671. Does it mean that the trip kA is different when the breaker is used for residential or non residential use? 09-09-2003, Language(s): Two standards that specify requirements for low-voltage circuit-breakers (cbs) have been causing confusion for some time among designers and installers of electrical installations. To avoid nuisance trips, circuit breakers need to be sized appropriately to compensate for overcurrent. Ricki, you are correct, there are no difference on MCBs power supply side connection in AC applications. If such recommendations do not exist its better to use dedicated DC offer. legrand 3 amp type c 10 ka triple pole mcb circuit breaker 069 34 bs en 60898 . You have selected more than three (3) participants. Unfortunately I have no answer for the question. This means that the tabulated maximum Zs values of Tables 41.2, 41.3 and 41.4 need to be adjusted accordingly. Is this breaker fit for purpose along with Micrologic 2.2 trip unit? Circuit-breakers to BS EN 60898-1 are safe and easy to use, even after many years without maintenance. sponsored . can you help me more about use of Schneider MCB in DC current. But somewhere on the breaker it says Icu 20 KA . Any installer who plans to substitute a different cb must obtain authority from the assembly manufacturer to do so in compliance with Regulation 536.4.203. From your article I get that IEC 947-2 has stronger specs more than IEC 898-1 such as ( Ue , Ui , pollution degree) but how Icu for 947 ( stronger conditions ) can be greater than 898 for the same MCB, Dear Mostafa, in IEC 898-1 it is mainly used definition of Icn (rated (nominal) breaking capacity) but not Icu (ultimate breaking capacity) and it makes the difference. As mentioned in the blog, MCB manufactured as per IEC 60898 to be used in residential buildings or similar applications. Hunker may earn compensation through affiliate links in this story. The high instantaneous trip level prevents nuisance tripping, and components being protected can typically withstand higher fault currents without being damaged. What will be be approximate short-time delay timing for 448A inrush? Calculate the maximum Zs value. The concept behind it evolved in the 1970s-80s when it was a single standard for all low-voltage switchgear. Circuit-breakers to BS-EN 60947-2 are frequently used for industrial applications in utilities and manufacturing industries. You'll be able to access your Multi User Orders to add Users. Stephen, the Max Zs value is not always published in technical guides. This article will try to clarify the situation. Please contact our Customer Service team on Email: standards@saiglobal.comPhone: +44 0203 327 3140. Fuses are made of a piece of metal that will melt when too much power passes through it, effectively disrupting the circuit and preventing that power surge from reaching your appliance. USD To some homeowners, this represents too much of a hassle. Manufacturers warn against installing circuit- breakers of one manufacturer as replacements for cbs of another manufacturer, without the necessary verification of performance. Also as i am new, how do i calculate my trip current ? Hello Sumith, The technical storage or access that is used exclusively for anonymous statistical purposes. They are used to protect power distribution circuits up to 1,000 V AC and 1500 V DC with current ratings of 0.5 A to 6,300 A. The electromagnetic trip is five to ten times the rated current of the supplementary protector (5~10 x In). JPY Advantages and Disadvantages of Circuit Breakers and Fuses Fuses represent a less expensive route for overcurrent protection. Reference ambient temperature is 30C for households. EUR This website was designed, optimised and is hosted by Untold Media. if you have a 2.5mm circuit with a ccc of 23A, you would select a 16A or 20A MCB. 1.5mm is generally used for lighting ( domestic) as a " 1 size fits all", the load on a domestic lighting circuit is very rarely exceeding the ccc of 1.5mm. I have started working in the industrial sector and am having trouble completing test certs for installations fed from panels. . Calculate the maximum measured Zs. Following IEC 898-1 ratio between Icn and Ics (service breaking capacity) shall be: (05/2005), FRAMEWORK FOR NEW INDUSTRIAL AND COMMERCIAL UNDERGROUND CONNECTIONS - PART 5: MATERIALS SPECIFICATION, SPECIFICATION FOR DISTRIBUTION ASSEMBLIES FOR REDUCED LOW VOLTAGE ELECTRICITY SUPPLIES FOR CONSTRUCTION AND BUILDING SITES, EMERGENCY LIGHTING - CODE OF PRACTICE FOR DESIGN, INSTALLATION, MAINTENANCE AND USE OF OPTICAL FIBRE SYSTEMS, BS 8436 - ELECTRIC CABLES - SPECIFICATION FOR 300/500 V SCREENED ELECTRIC CABLES HAVING LOW EMISSION OF SMOKE AND CORROSIVE GASES WHEN AFFECTED BY FIRE, FOR USE IN WALLS, PARTITIONS AND BUILDING VOIDS - MULTICORE CABLES, HEALTH AND SAFETY FOR DESIGN AND TECHNOLOGY IN SCHOOLS AND SIMILAR ESTABLISHMENTS - CODE OF PRACTICE, Fire hazard testing - Part 2: Test methods - Section 1: Glow-wire test and guidance, LOW VOLTAGE SWITCHGEAR AND CONTROLGEAR - CIRCUIT BREAKERS, Low voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock, NOMINAL VOLTAGES FOR LOW-VOLTAGE PUBLIC ELECTRICITY SUPPLY SYSTEMS, FIRE HAZARD TESTING - TEST METHODS - GLOW-WIRE TEST AND GUIDANCE, GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT - INDEX, SURVEY AND COMPILATION OF THE SINGLE SHEETS, Simple online access to standards, technical information and regulations, Critical updates of standards and customisable alerts and notifications, Multi - user online standards collection: secure, flexibile and cost effective.