Fuse link - NH1 gG 20A/500V - time-lag 004184227

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 design and parameters of these fuse links comply with PN-93/E-06160 (gF), PN-IEC-269 and VDE 0636 standards, which guarantees their reliable operation in various conditions. The offered model NH1 gG 20A/500V is a time-delay fuse link, intended for general use – protection of wires and devices.

Construction and characteristic features

The fuse link is made of high-quality steatite, a material with stable thermal properties. Silver-plated knife contacts ensure good electrical contact and minimize the risk of corrosion. Aluminum covers provide additional protection against external factors. The fuse link is filled with specially granulated quartz sand, which affects the high short-circuit breaking capacity – up to 120 kA – and stable operating parameters.

A special feature of this model is the double tripping indicator. This means the presence of both a red eye in the central part of the ceramic body and a spring-loaded plate on the top cover. This solution ensures easy and quick visual identification of a blown fuse link, both in the fuse base and in the disconnector. Additionally, the indicator on the top cover allows cooperation with the NVS 5 microswitch for remote tripping signaling.

Application and benefits

NH fuse links are widely used in industrial installations and public buildings. They are ideal for protecting:

• Electrical wires
• Electrical devices
• Power circuits
• Electrical switchboards

By choosing this fuse link, you gain:

• Effective protection against overloads and short circuits – thanks to the gG characteristic, the fuse link reacts with a delay to short-term current surges, which helps avoid unnecessary tripping of circuits when starting devices with a motor.
• High reliability – confirmed by compliance with applicable standards and solid construction.
• Easy status identification – thanks to the double tripping indicator.
• Remote signaling capability – through cooperation with the NVS 5 microswitch.
• Production in the EU - a guarantee of quality and compliance with European standards.

It is worth remembering the possibility of using insulated holders (NH…/I…) to increase safety during assembly and maintenance.