0468.500NRHF Datasheet/PDF4685.500NRHF are fuse types with tall, cylindrical shapes. They are used as part of current overload protection systems to safeguard important circuits and components from damage due to excessive current in case of a short circuit of failed component. They are also known as branch feeder fuses, and are used to protect large conduit systems, heavy loads, as well as voltage transformers and generators.
4685.500NRHF fuses are similar to other types of medium voltage fuses, in that they are used to control when the current should be shut off, and are able to protect an electrical system both during normal current flows, and during short-circuit or fault conditions. However, they have some unique characteristics that make them particularly suited for heavy-duty applications.
The 4685.500NRHF fuse is an SF6 gas-filled safety device. It consists of a glass body containing a load switch, used to control the amount of current that passes through. The switch is sealed within the body, and can be set to automatically turn off the current when the current exceeds a certain level. The gas within the body is pressurized, so that it will react when there is a sudden increase in the current flow, causing the switch to trip and shutting off the current supply.
When a fault is detected, the fuse will open its contacts and break the flow of current, which will cause the fault to be eliminated. This is the principle of operation for all of these types of fuses.
4685.500NRHF fuses can be used in medium- to large-sized electrical systems, such as those found in residential homes, factories, and warehouses. They are typically installed in fuse boxes and circuit breakers to enhance the overall safety of the system. Additionally, 4685.500NRHF fuses are an ideal choice for applications that require a high level of reliability and protection, as they can handle up to 2500 volts and are very reliable.
4685.500NRHF fuses can also be used in a variety of other applications, such as deep-well pumps, water treatment plants, and photovoltaic systems. With their ability to handle high current flows and extreme voltages, these types of fuses make them an ideal choice for a wide range of applications.
When considering 4685.500NRHF fuses for an overload protection system, it is important to understand their working principles. Knowing how these fuses operate and how they are able to protect an electrical system can help to ensure that the best safety solutions are being used for the application.
When a short circuit or other electrical fault occurs, the pressure of the gas within the body of the fuse will increase and cause the fuse to trip, thus halting the flow of current. Additionally, as the gas pressure increases, the contact gap between the load switch and the body will close, making the circuit complete, and the current will flow from the load switch to the body of the fuse.
Once the current exceeds the specified threshold, the gas pressure will trip the fuse, thus halting the circuit and preventing any further damage from occurring. This is due to the fact that the gas pressure, which is higher than the voltage threshold, will compress the spring within the body of the fuse, breaking the electrical connection and thus stopping the flow of current.
4685.500NRHF fuses are an ideal choice for high-voltage, high-current applications. Due to their ability to handle extreme currents, and their reliable operation, these fuses are often found in residential, industrial, and commercial applications. Furthermore, these fuses are safe to use, and provide reliable protection against a short circuit or overload.