Fuse link - NH000 gG 20A/400V - time-lag 004181106

Knife fuse links – reliable installation protection

Knife fuse links NH are industrial devices designed to protect electrical installations against the effects of short circuits and overloads. Their parameters and dimensions comply with PN-93/E-06160 (gF), PN-IEC-269 and VDE 0636 standards. This specific fuse link, with the symbol NH000 gG 20A/400V, combines a proven design with modern signaling solutions.

Construction and application

The NH000 gG 20A/400V fuse link is characterized by a time-delay characteristic (gG), which means it is intended for general use and provides protection against overloads and short circuits. This is particularly important in installations where short-term current surges occur, e.g. when starting motors. The construction based on a steatite body, a material with high thermal stability, guarantees reliable operation even in difficult conditions. The knife contacts made of silver-plated brass ensure good electrical contact and minimize power losses.

Advantages and characteristic features

• Double indication of operation: The combination of an indicator on the top cover and in the central part of the ceramic body facilitates quick identification of a blown fuse – both visually and remotely (cooperation with NVS 5 microswitch).
• High breaking capacity: The fuse link has a short-circuit breaking capacity of 120 kA, which ensures effective protection of the installation against the effects of serious failures.
• Strength and durability: The body filled with quartz sand of a special granulation increases the stability of electrical parameters and the breaking capacity. The aluminum covers protect against corrosion.
• Easy installation: Silver-plated knife contacts facilitate installation in a fuse holder or fuse disconnector.
• Compliance with standards: The fuse link meets the requirements of IEC 60269-1 and IEC 60269-2 standards, which confirms its safety and quality.
• Rated current: 20 A at 400 V AC.
• gG characteristic: Full-range protection, ideal for cables and devices requiring protection against overloads and short circuits.
• Power loss: 2.7 W – indicates energy efficiency under normal operating conditions.
• Joule integral: Pre-arcing: 400 A²s; Breaking: 1210 A²s – parameters important for selecting the appropriate protection for a given circuit.

This fuse link is a solid protective element for electrical installations, both for professional installers and end users looking for a reliable solution.