Knife fuse link NH4a double indicator non-insulated gG 800A 500VAC LNH40800M

Safety and reliability in high-current installations

This Hager NH4a fuse link is a component designed to protect electrical circuits with high loads. It provides effective protection against overloads and short circuits, protecting both the installation and connected devices. The design with a double tripping indicator facilitates quick identification of a blown fuse, minimizing system downtime.

Characteristics and application

The fuse link with a rated current of 800A and a voltage of 500VAC is ideal for use in industrial installations, power distribution boards and anywhere where protection against high currents is required. The gG characteristic (full selectivity) means that the fuse reacts to all overloads and short circuits, providing comprehensive protection. The NH4a design is a standard in the industry, guaranteeing compatibility with a wide range of switchgear and holders.

Construction and functionality

The fuse link is made of high-quality materials, ensuring its durability and reliability even in harsh working conditions. The absence of metal insulated grips (IMGL) simplifies assembly and disassembly. The double tripping indicator is a practical solution – it allows for visual control of the fuse status from both sides of the device, which facilitates diagnostics. The uninsulated handle requires special caution during replacement, but ensures a firm grip. Power loss at rated current of 65W indicates the energy efficiency of the component – minimizes energy losses during operation.