Low voltage NH knife-blade fuse-links
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1 Low voltage NH knife-blade fuse-links NV KOMBI advantages ETI is introducing a new generation of low-voltage fuse-links from size NV00C up to NV3 with new, dual indication of fuse-link operation, called KOMBI. The indicator is easily visible on the top and centre of the fuse-link, whether it is situated in a standard fuse base or vertical fuse rail or in fuse-switch disconnector. The most important advantages of KOMBI fuse-links: High breaking capacity, 120 ka voltages: 400 V a.c., 500 V a.c., 690 V a.c. and 1000 V a.c. Two versions of covers: aluminium, when the removal tag is under voltage and plastic, when insulated metal removal tag is incorporated into the plastic cover VDE certificates and CCA/CB test reports General about fuse-links Their dimensions correspond with DIN 43620, other technical characteristics correspond with the requirements of the following standards: voltage 400V/500V/ IEC :2005 / EN :1998+A1:2005 IEC :1986+Corr.1: 690V/gG: 1996+A11995+A2:2001 / EN :1995+A1:1998+A2:2002 IEC :2004 / HD :2005 voltage 690V/aM: VDE voltage 400V/gF: PN-IEC voltage 400V/gTr: VDE Short description of constituent parts for NV fuse-links The body of the fuse-link is made of quality steatite which is highly resistant against temperature overloads. In the inner part of the steatite body there is a copper melting element which is welded on a specially shaped inner part of the contact knife by spot welding. By careful shaping of this part we achieved that during assembly the melting element is placed exactly into the middle of the inner place. The remaining inside place of the ceramic body is filled up with precisely determined granulation and chemical structure quartz sand. All contact knives are additionally protected with a layer of silver or on special order of nickel. On the base of cyclic tests we have proved that the fusing characteristics are very stable and the tolerance on the axis can be up to ± 10%. Fuse-link gg Breaking capacity voltage A 120 ka 400, 500, 690 V C KOMBI gg 00C I KOMBI gg* Code No. Code No. ~ 400V ~ 500V ~ 690V ~ 400V ~ 500V ~ 690V / / / / / / / / / / / / / / NEW! technical data on page538
2 00 C gg with striker pin Code No KOMBI gg 00 I KOMBI gg* Code No. Code No. ~ 400 V ~ 500 V ~ 400 V ~ 500 V / / / / /90 00 gg with striker pin Code No KOMBI gg Code No. ~ 500 V ~690 V / / / / / / / / / / / / / /45 241
3 1C KOMBI gg 1C I KOMBI gg* Code No. Code No. ~ 400V ~ 500V ~ 690V ~ 400V ~ 500V ~ 690V / / / / / / / / / /45 1 KOMBI gg 1 I KOMBI gg* Code No. Code No. ~ 400 V ~ 500 V ~ 400 V ~ 500 V / / / / / / / /24 1 gg with striker pin Code No
4 2C KOMBI gg 2C I KOMBI gg* Code No. Code No. ~ 400 V ~ 500 V ~ 400 V ~ 500 V / / / / / / / /15 2 KOMBI gg 2 I KOMBI gg* Code No. Code No. ~ 400 V ~ 500 V ~ 400 V ~ 500 V / / / / /15 2 gg with striker pin Code No
5 3C KOMBI gg Code No. ~ 400 V ~ 500 V / / / / / /12 3 KOMBI gg 3 I KOMBI gg* Code No. Code No. ~ 400 V ~ 500 V ~ 400 V ~ 500 V / / / / / / / / / / /12 3 gg with striker pin Code No gg Code No. ~ 500 V / / / / / /12 244
6 4a gg Code No. ~ 500 V SI / / / / / / / /12 4a gg with striker pin Code No V a.c. gg Code No / / / / / / / / / / / / / /24 245
7 Fuse-link am Breaking capacity voltage A 100 ka 690 V Fuse-links with am characteristics are intended for protection of switchgears and controlgears as well as motors in motor drives where gg characteristics do not comply with all requirements of succesful protection of these devices. They are made in all standard NV sizes from 00 to 4a for all standard rated s and for voltages to 690 V. Their main duty is to enable a full usage of switchgears and controlgears in the region of starting s and to prevent sparking or destruction of protective contacts in case of short-circuit s. It should be noted that these fuse-links are intended only for protection in the limited region (in the region of short-circuit s). fuse-link am NV 00 C NV 00 NV 0 NV 1 Code No. NV 2 C NV 2 NV ** ** ** ** ** ** ** ** * ** * ** ** ** ** ** ** ** ** ** ** ** and the same as for gg fuse-links. * 500 V ** NOT in KOMBI version NV4a 246 technical data on page 541
8 Fuse-link gf Breaking capacity voltage A 100 ka 400 V Fuse-links with gf characteristics are intended for protection of low voltage installations and energy lines, where expected short circuit s are low. We offer all standard rated s in sizes NV00C, NV00, NV1C and NV1 for voltages of up to 400V. fuse-link gf Code No. ~ 400 V C 00 1 C 1 the same as for gg fuse-links the same as for gg fuse-links Fuse-link gtr transformer power Breaking capacity voltage kva 100 ka 400 V fuse-link gtr transformer power Code No. [kva] 2 3c 3 4a * * * * * * * * * * * * * * * * * KOMBI version the same as for gg fuse-links the same as for gg fuse-links technical data on page
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