Low voltage NH knife-blade fuse links
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Lowvoltage NH knife-blade fuse-links Low voltage NH knife-blade fuse-links ETI is introducing a new generation of low-voltage fuse-links from size NVOOC up to 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 NV/NH KOMBI fuse-links: ■ High breaking capacity, 120 kA ■ Rated voltages: 400 V a.c, 500 V a.c, 690 V a.c. and 1000 V a.c and up to 440 V d.c. In case of use in d.c. voltages, consultation with ETI technical team is recommended. ■ 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 NV/NH fuse-links Their dimensions correspond with DIN 43620, other technical characteristics correspond with the requirements of the following standards: ■ Rated voltage 400V/gF: PN-IEC 60269-2 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 achived 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 quarz 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 current axis can be up to ± 10%. Rated current Breaking capacity Rated voltage

Low voltage NH knife-blade fuse-links NV/NH 00 C gG with striker pin technical data on page 410

Lowvoltage NH knife-blade fuse-links NV/NH 1 gG with striker pin technical data on page 410

Low voltage NH knife-blade fuse-links NV/NH 2 gG with striker pin technical data on page 410

Lowvoltage NH knife-blade fuse-links technical data on page 410

Low voltage NH knife-blade fuse-links NV/NH 4a gG with striker pin NV/NH IIOOOV technical data on page 410

Lowvoltage NH knife-blade fuse-links Fuse-link NV/NHaM Rated current Breaking capacity Rated voltage 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 currents and for voltages to 690 V. Their main duty is to enable a full usage of switchgears and controlgears in the region of starting currents and to prevent sparking or descruction of...

Low voltage NH knife-blade fuse-links Rated current Breaking capacity Rated voltage Fuse-links with gF current characteristics are intendend for protection of low voltage installations and energy lines, where expected short circuit currents are low. We offer all standard rated currents in sizes NVOOC, NVOO, NV1C and NV1 Rated transformer power Breaking capacity Rated voltage gGtalilne gGtalilne vlozke vlozke technical data on page 414

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