Energy saving hrc fuselinks blade type hn 63 a 800 a cylindrical type hf 2 a 63 a. They are known as semienclosed or rewireable fuses. Hrc fuses consist of a ceramic body with a silver fuse filament based on ampere rating and a striker pin. During overloads or short circuits the fuse gets heated up to melting point due to excessive current and breaks the circuit. Hrc fuse links, vac product code asicc 77434 quality and standards is 703.
Bs88, iec269 industrial hrc fuse links offset bolted tags 550v ac and motor rated 415v osd offset bolted tag bussmann division cooper u. In power plants, hrc fuses are used extensively to protect buses, feeders and loads. Performance of hrc fuse and mccb in low voltage distribution. Lv hrc fuse switchdisconnectors, size 00 11 3 4 12 6 9 9 10 10 1. An important element in the fuselink construction is also the striker system. Electrical fuse on what principle does the fuse operate. Steatite insulator, corrosionproof aluminum metal parts with fullcontact, silverplated copper blades. Fuse characteristics, terms and consideration factors. Low voltage fuse catalogue hrc fuse online catalogue. In the united states they are known as class j, class l, class r, etc. Part of that system is temperature sensitive element, which reacts in cases of temperature increasing of the fuselink due to various reasons. Design and manufacturing of hrc fuse links engineers. Because of its high current rupturing capacity, a special method for extinguishing arc is required in the design of hrc fuse. Please visit our website at for further information.
In this mode, the fuse does operate during the first major half cycle, and does limit the magnitude of the fault current. Nh lv hrc fuse links conform to the international standard iec 60269 combi indicator. The ratio of fusing current and the current rating of fuse element is known as. However, the best possible rating of a hrc fuselink selectedrecommended for such application depends on. No we should not use the hrc fuse in place of semiconductor fuse. The load contactors are interlocked with the fan controls to ensure load can be applied only when the fan is running. Fuses with gg characteristics protect associated cables. Because of its high current rupturing capacity, a special method for extinguishing arc is required in the. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Hrc fuse links size 000 w technical data size nh000 rated voltage ac400v rated current 2100a rated breaking capacity 100ka utilization category gg standards iecen 602691 din vde 06362 powerdissipation 4a 0,7w. Hrc fuselinks offer one of the best forms of protection for motor starting applications in view of very low short circuit stresses generated in case of a fault as compared to other protective devices. The body is a ceramic material of robust construction and has one or more element holes. Lv hrc fuse switch disconnectors with quasiinstantaneous circuit. You can find 00 and 3ag sized hrc fuses, but dont forget to top up the credit on the visa card before purchase.
The larger the wire cross section, the larger is the current that the fuselink will carry without operating. Fuse characteristics can be classified into three general categories. Hrc fuse link is a very common, simple and effective electrical protection device against over load and short circuit current. It consists of fuse wire which is designed according to the customers requirement and the rest of the design depends upon it. Basic construction 1 base of disconnector ultl003 2 protective cover, top boltl003 3 protective cover, bottom. Pe hrc fuses system tm fuse links for distribution protection construction. Hrc fuse construction, working and characteristics electrical. Lv hrc stripfuseways bottom connection sizes 003 160a630a 62 product definition stripfuseways are 3pole striptype fusebases for mounting on busbars. The vapour of fuse element and the powder together form the high resistive substance which extinguishes the arc. Here is an example of a timecurrent curve from a cooper bussmann datasheet. Hrc fuse links nh class of operation glgg 690v ac 440v dc 6 to 630 amps. Arcing takes place inside hbc fuse cartridge during fault and hence your installation is safe. In case of any fault, the striker pin comes out with pre defined force.
Hrc fuse bases are tested for 80 ka at 415 v, 50 hz as per is. The typical fuse consists of an element which is surrounded by filler and enclosed by the fuse body. Schurter offers a wide variety of fuses to meet any application. High rupturing capacity hrc fuses are totally enclosed fuses with definitely known, high breaking capacities which have been developed after intensive research by manufacturers and supply engineers. Cad blocks and files can be downloaded in the formats dwg, rfa, ipt, f3d. Looking at the curve for the 400amp fuse, the second from the bottom, the 400amp fuse w.
In this paper, application of hrc fuses and mccbs in low voltage distribution network is examined. It depends on the duration of the current and the specifications of the fuse. The standard range of fuses for low voltage industrial and general. In the uk, fuses of this type are specified for use at voltages up to 250 v and currents up to 100 a. Request pdf performance of hrc fuse and mccb in low voltage distribution. Extensive electrical protection with hrc fuse protection for each element group and its associated contactor, control circuit, fan motor overload and load bank. There is a small overlap zone between the overload and shortcircuit modes of operation, where the fuse may or may not act in.
The nsd range of fuse links comply with general purpose gg characteristics and fit into the safeloc fuse holders and into the camloc distribution fuseboardsystem. But the semiconductor fuse will act when the current exceeding as well as no current in the circuit,where the voltage exceeds the fuse limit. Looking for downloadable 3d printing models, designs, and cad files. Recommended fuse holders basic fuse holder catalog catalog numbers numbers nsd 32nnsf esd 63ensf. Hrc fuse consists of heat resisting ceramic body having metal end caps on which silver current carrying element. Hrc fuse links size 2 w technical data size nh2 rated voltage ac400v rated current 35400a rated breaking capacity 100ka utilization category gg standards iecen 602691 din vde 06362 powerdissipation 63a 5,5a. Bare wire will vapourise and bridge the contacts inside the equipments. One contact of each phase in coming contact is con nected to one phase of a 3pole busbar system.
Varius e2 summary of models of hrc fuselinks type pva10 pv10 pv14 pv22 rated current i n up to 32 a up to 63 a up to 125 a rated voltage u n ac 400 v, 500 v 400 v, 500 v, 690 v 400 v, 500 v, 690 v dc 250 v 250 v 250 v fuselink size 10x38 14x51. Remote alarm terminal available in three positions common to dc circuit protection devices. Can you replace the glass fuses in a multimeter with hrc fuses of a similar voltage and current rating. All other copies of this bif document are by definition uncontrolled. Hrc fuse high rupturing capacity fuse and its types. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. The element is welded or soldered to the fuse contacts blades or ferrules. S01574a ofaa s01574a fusegear bs and din type hrcfuse. An hrc fuse is a type of cartridge fuse, in which the fuse element is enclosed within a transparent capsule, usually made up of. This is very important when testing large capacity power supplies, due to the possible high fault currents. Din square bodied, dual indication industrial fuses. Bussmann also reserves the right to change or update, without notice, any technical infor.
Free cad and bim blocks library content for autocad, autocad lt, revit, inventor, fusion 360 and other 2d and 3d cad applications by autodesk. Because the hrc fuse will act,at the time of short circuit or the current exceeding the fuse limit. Can we use hrc fuse inplace of semi conductor fuse. They combine three length wisearranged 1pole fusebases in one unit. The construction of the fuse element is similar to the low voltage fuses. This striker pin further can be used to trip equipment it has to protect. Insulating blades for hrc fuse sockets are made of red polycarbonate, in three dimensions, depending on the fuse socket and are provided with metallic fixing lamella that allows the coupling to protective devices for the handling of hrc fuses. A fuse is a protection device used to protect a device or a circuit from severe damage caused due to overcurrent or short circuit faults. Is 703 iec 60269 new standard for hrc fuses supercedes is 9224. By the temporary replacement of fuses, insulating blades allow the open position locking of power. Performance of hrc and mccb are compared under a typical system performance condition. Hrc fuses consist of a ceramic body with a silver fuse filament based on ampere rating and a striker pin mechanism.
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