Fuse link - NH3 UQ2 gR 630A/690V - ultra-fast 004725228

Installation and device safety – NH3 fuse links

NH3 fuse links are a key element of electrical protection, protecting installations and devices connected to them from the effects of overloads and short circuits. This model, with a rated current of 630A and a voltage of 690V, features an ultra-fast gR characteristic, making it particularly useful in applications requiring high selectivity and a quick response to failures.

Specialized protection and application

The gR characteristic, in accordance with IEC 60269 standard, is primarily dedicated to the protection of semiconductor elements. This means that this fuse link reacts very quickly to sudden current surges, minimizing the risk of damage to sensitive electronic components. This is an ideal solution for installations powering control circuits, inverters or impulse power supplies.

It is worth remembering that NH3 fuse links require the use of appropriate fuse holders – the selection should be consistent with the parameters of the fuse link and the requirements of the installation.

Construction and characteristic features

The fuse link is designed for operation in alternating current (AC) circuits. It has an operating indicator located on the top of the housing, which facilitates quick visual identification of a blown fuse. The lack of metal insulated grips (IMGL) indicates a standard construction, compatible with most available holders. The response speed of this model translates to minimizing downtime and reducing repair costs resulting from damage caused by overloads or short circuits.