Knife fuse link NH000 double indicator non-isolated holder gG 25A 500VAC LNH0025M

Knife fuses NH000 – reliable circuit protection

The NH000 knife fuse insert is an element used to protect electrical installations against overload and short circuit. This model, with a rated current of 25A and a voltage of 500VAC, is particularly useful in circuits requiring slow tripping, thanks to its gG characteristic. It has an operating indicator that facilitates quick identification of a blown fuse, minimizing downtime of the installation.

Construction and application

The insert is manufactured in accordance with IEC 60269 standard, which guarantees its high quality and safety of use. The construction of NH000 makes it compatible with dedicated fuse holders of this standard. The uninsulated handle requires special caution during replacement, therefore it is recommended to disconnect the circuit power. The front indicator allows for visual control of the fuse status without the need for disassembly.

Advantages and benefits

• Overload and short circuit protection: Provides effective protection of the electrical installation against damage caused by excessive load or short circuit.
• gG characteristic: Ideal for protecting circuits powering devices with high inrush current, such as motors or transformers – allows for momentary exceeding of the rated current without unnecessary tripping.
• Operating indicator: Enables quick and easy identification of a blown fuse, shortening repair time and minimizing downtime.
• Compliance with standards: Meets the requirements of IEC 60269 standard, which confirms its quality and safety of use.
• Universal voltage: Can be used in both AC (500V) and DC (250V) circuits.
• Low power loss: Power losses at 2.4W at the rated current minimize the impact on the energy efficiency of the installation.

This model operates at AC 500V and DC 250V, and its rated current is 25A. It is characterized by a front operating indicator and a high short-circuit breaking capacity of 120kA, which ensures reliable protection of the installation. The gG characteristic makes it particularly suitable for protecting circuits with devices with high inrush current.

NH000 knife fuses are a proven safety element for electrical installations in commercial buildings, industrial facilities and critical infrastructure. Their solid construction and high reliability guarantee long-term protection against the effects of electrical failures.