Fuse link - NH2 UQ aR 400A/690V - ultra-fast 004334222

Ultra-fast semiconductor protection – NH2 fuse link 400A/690V

This NH2 fuse link with a rated current of 400A and a voltage of 690V is a key element in protecting electrical installations, especially where a rapid response to overvoltages is required. Designed to protect semiconductors, it effectively protects diodes, thyristors, triacs and other sensitive power electronic components in frequency converters, rectifiers and inverters. Its construction and aR characteristic provide optimal protection against short circuits, minimizing the risk of damage and downtime.

Reaction speed and compliance with standards

The ETI Polam fuse link from the UltraQuick series is distinguished by its ultra-fast response to overvoltages. This makes it ideal for applications requiring high selectivity and minimal circuit disconnection time. It meets the stringent requirements of PN-IEC 60269 and VDE 0636 standards, guaranteeing its reliability and safety of use. The top indicator allows for a quick visual assessment of the fuse link status – whether it has blown or not.

Application and benefits for professionals

The NH2 400A/690V fuse link is a solution valued by installers and service technicians due to:

• Semiconductor protection: The special aR characteristic provides effective protection of semiconductor elements against damage caused by short circuits.
• Fast reaction: The ultra-fast reaction minimizes the duration of overvoltages, protecting the remaining elements of the installation.
• Compliance with standards: Meeting PN-IEC 60269 and VDE 0636 standards guarantees safety and reliability of operation.
• Easy status identification: The top indicator facilitates a quick assessment of the fuse link status without the need for disassembly.
• Versatility: Can be used in both AC and DC circuits.

It is worth remembering that the lack of metal insulated gripping tags (IMGL) means that appropriate insulating washers must be used during installation.