Fuse link - NH1 UQ aR 250A/690V - ultra-fast 004333216

Ultra-fast NH1 fuse link – protection for your installation

This NH1 fuse link with a rated current of 250A and a voltage of 690V, manufactured by ETI Polam, is a reliable safety element for electrical installations. Designed to protect semiconductor elements against short circuits (aR characteristic), it provides a fast response and minimizes the risk of damage.

Characteristics and application

This fuse link, marked with the aR characteristic, is dedicated to protecting circuits containing semiconductor elements. This means that it reacts very quickly to sudden current surges, typical of short circuits in electronic circuits. The speed of response is crucial in such applications, as it minimizes the duration of the overvoltage and limits potential damage to sensitive components. The upper indicator allows for visual control of the fuse link status – it is easy to check if it has blown and needs to be replaced.

Advantages in practice

• Fast protection: The aR characteristic guarantees a lightning-fast response to short circuits, protecting valuable equipment and installations.
• ETI Polam reliability: ETI Polam is a renowned manufacturer with many years of experience in the electrical protection industry – the company's products meet high standards of quality and safety (holds BBJ, VDE, NEMKO, FIMKO, DEMKO certificates as well as ISO 9001 and ISO 14000 certificates).
• Versatility: Designed to operate in AC circuits with a voltage of 690V, making it compatible with a wide range of electrical installations.
• Visual status control: The upper indicator facilitates quick identification of a blown fuse link without the need for disassembly.
• Safety: Provides effective protection against overloads and short circuits – like most circuit breakers in this class.
• Solid construction: Made of high-quality materials ensuring durability and reliable operation.

Technical specifications

The fuse link has metal insulated grips (IMGL) set to false, which means that these elements do not have additional insulation. This is important when designing electrical installations and selecting appropriate components. The rated current of 250A defines the maximum current that the fuse link can carry without damage or operation. The rated voltage of 690V defines the maximum operating voltage of the fuse link.