Fuse link - NH000 gG 25A/690V - time-lag 004181307

Knife fuse links – reliable installation protection

Knife fuse links NH are a proven element of electrical protection, protecting against the effects of short circuits and overloads. The NH000 gG 25A/690V product, with catalog number 004181307, is designed for industrial requirements and meets the standards of PN-93/E-06160 (gF), PN-IEC-269 and VDE 0636. This guarantees compatibility and safety in various applications.

Construction and characteristic features

The fuse link is made of high-quality materials – a steatite body provides thermal stability, and silver-plated brass knife contacts guarantee optimal current conduction. Aluminum covers protect against corrosion, which translates into a long service life. The link is filled with quartz sand of precise granulation, which affects the high short-circuit breaking capacity (up to 100 kA) and stable electrical parameters.

Particular attention is paid to the double tripping indicator – a red eye in the central part of the ceramic body and a springy plate on the upper cover. This solution ensures easy and reliable identification of a blown fuse, both in the fuse base and in the disconnector. Additionally, the indicator in the upper cover allows cooperation with the NVS 5 microswitch for remote signaling of the fuse status.

Application and parameters

The NH000 gG 25A/690V fuse link is intended for protecting cables and devices with a time-delay characteristic (gG). This means that it allows for short-term exceeding of the rated current without tripping, which is particularly important when starting devices with electric motors or other pulsed loads. The rated current of this fuse link is 25A at AC 690V and DC 250V. The total Joule integral of switching is 1200 A²s, and the pre-arcing is 10000 A²s. The power loss value is 2.6W.

By choosing this fuse link, you are investing in reliable protection of the electrical installation, in accordance with the applicable IEC 60269-1 and IEC 60269-2 standards. Insulated holders (NH…/I…) are also available to increase safety during installation and operation.