Fuse link - NH3 gTr 909A/400V/630kVA - transformer 004115410

Robust transformer protection – NH3 gTr 909A fuse link

This NH3 fuse link, with a rated current of 909A, is specifically designed to protect transformers from the effects of short circuits and overloads. Its gTr characteristic ensures a fast and effective response in the event of a failure, minimizing the risk of damage to connected devices. This is a key element in protecting the electrical installation, both in professional applications and in public buildings.

The fuse link has a top indicator, which makes it easy to visually check the device's status – after the fuse has blown, the information is immediately visible. The design without metal isolated grips (IMGL) simplifies installation and replacement. The rated breaking capacity of 100kA guarantees safety even in the event of high fault currents.

Key features and benefits:

• Specialized transformer protection: gTr characteristic perfectly matched to protect transformers from overloads and short circuits. This allows for a longer transformer life and minimizes the risk of costly downtime.
• High breaking capacity: Breaking capacity of 100kA ensures effective protection of the installation even with high overvoltages.
• Operation indicator: Top indicator allows for quick and easy identification of a blown fuse, which streamlines the diagnosis and repair process.
• Reliability and durability: Made of high-quality materials, guarantees long-lasting and trouble-free operation.
• Compliance with standards: Meets the requirements of VDE 0636-21 standard, confirming its safety and quality.

Operating parameters and installation

The fuse link is intended for operation in alternating current (AC) circuits with a rated voltage of 400V. Its application primarily includes the protection of transformers with a power of up to 630kVA. Installation is simple and intuitive, and the lack of metal isolated grips (IMGL) further facilitates this process. Remember to select the correct fuse for a specific application and to regularly check its technical condition. Total Joule’s switching capacity is 6,470,000 A2s and the arc switching capacity is 3,000,000 A2s, which proves the high energy efficiency of the device during emergency conditions.