FNQ-R-10

Electrical specialty fuses are designed to protect electrical circuits from short circuits and excessive current. The FNQ-R-10 fuses and fuse links are a subset of specialty fuses applicable to a range of circuits requiring overload and short-circuit protection.

Application Area

The application areas most suitable for the FNQ-R-10 are common to all types of processing industry. Whether for general industrial purposes pumps, motors, transformers, tools, electronic equipment or other applications in which small space and higher current and voltage applications are needed.

Working Principle

The FNQ-R-10 electronic fuse operates based on a set of time-current curves. These curves indicate the current at which the fuse will fuse or open the circuit. This current is specific to the type of fuse and depends on the rating of the fuse in amperes. The higher the rating, the longer the fuses will take to open the circuit.

When the fuse senses an overload, it will quickly interrupt the current flow before excessive currents cause damage to the circuit. The speed at which the fuse interrupts current flow depends on the multiplication of fault current and the operating time of the fuse. The interruption time is inversely proportional to the amount of fault current.

Selection

When selecting a FNQ-R-10 fuse, there are a few essential characteristics that should be considered to ensure the proper fuse protection is available. Open- and closed-circuit operation, voltage rating, current rating, application (lighting, power distribution, etc.), fuse material, trip characteristic, time-current curve, and over-current protection.

To ensure proper fuse protection, the user should verify all parameters match with the required characteristics of the circuit in which it is to be used. The time-current curve, which is provided by the manufacturer, should be used to accurately select the proper size of fuse.

Installation and Maintenance

Prior to installation, special attention must be taken to ensure proper installation. After the circuit has been properly prepared, the FNQ-R-10 should be mounted onto a suitable busbar and the fuse should be firmly secured in position. Any loose connections at the terminals should be secured in accordance with the manufacturer’s instructions.

After installation, the terminal connections, fuse holder, and fuses themselves should be visually inspected for any signs of arcing and corrosion. If any problems are found, they should be rectified before the electrical circuit is energized. The FNQ-R-10 should be regularly inspected for signs of damage or aging. If any damage is seen the fuse should be replaced.

Conclusion

The FNQ-R-10 fuse is an important part of any electrical system. It is important to select the proper fuse for the application, install it properly, and regularly maintain it. Taking these steps can help ensure that electrical circuits are properly protected and extend the life of the circuit components.