FN7-12 Load Break Switch - 12KV Indoor Fuse Combination Unit (Switch-Fuse)
The FN7-12 Indoor HV Load Switch represents an evolutionary step forward from its traditional predecessors in Gas Generating Switches due to its capability to break Load Currents and close Short Circuit Currents more effectively within the same switch configuration.
Gas Generation as a Unique Feature of the FN7-12 provides increased Safety in that the arc produced by gas generation technology during the operation of the Load Switch reduces the chances of switching devices producing Arcing, which is essential for proper operation and maintenance of any electric power system. The FN7-12 is designed with a precise mechanism that allows operators to efficiently control complicated Power Loads in applications where Reliability and Safety are not negotiable. Therefore, The FN7-12 is a significant development in the safe operation of Three-Phase AC Power Systems.
Historically, Fuse Combos have played an important role in preventing equipment overloading and protecting against short circuit faults from occurring in any electrical Power System. The FN7-12 combines the advantages of both Fuse Combos and Load Switches into one assembly to provide just the opposite of dual protection. The Load Switch provides Operators with an easy way to control their load; however, it does not respond automatically when an abnormal current condition is present. On the other hand, the incorporated fuse constantly monitors for these overcurrent conditions and proceeds to take action if they occur. This combination of both the Load Switch and incorporated Fuse provides the ultimate measure of Protection, Efficiency, and Responsiveness to Faults, thereby reducing Downtime and Maintenance Costs.

Thanks to its indoor design, the FN7-12 can be used anywhere. High-Voltage Electrical Equipment for indoor use must be designed to work safely in small enclosed areas. All of this has been taken into consideration when designing the FN7-12, allowing it to be installed and operated in small substations, control rooms, and other types of indoor electrical systems. In addition, the FN7-12 is simple to install and operate, whether you are a skilled electrician or just entering your energy management career. As a result, it is more than just a device; it is a complete energy distribution solution for the complexities of modern day energy distribution systems.
The FN7-12 Series Indoor High Voltage Load Switch with Fuse Combination will redefine electrical safety and performance for many years to come. With the adaptability offered by this product and its ability to meet the needs of today’s society in providing more sustainable and secure power supply options, it has a great potential to influence industries’ search for new or innovative ways to generate electricity by incorporating the use of gassing technology to suppress arcs along with providing a highly reliable fuse monitoring system.
The FN7-12's ability to operate using the highest level of technology in the electrical field will complement the industry’s existing systems as they attempt to provide more reliable solutions for facilities that operate on high voltage campuses, and it provides evidence of how far we have progressed as an industry in the area of power management and safety, which can lead to significant advancements throughout the world with the implementation of this product.











