0458004.DR Circuit Protection

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Fuses are an important part of any electrical system. Their purpose is to protect the system from overloads and short circuits. The problem arises when these overcurrents or short circuits occur – it can cause the system to malfunction or even catch fire. This is where the 0458004.DR comes into play. It is a type of fuse designed specifically to protect motor components from these overcurrents and short circuits.

The 0458004.DR is a dual-rated fuse which provides two levels of protection. The first is motor overload protection, which is achieved by the fuse opening and interrupting the circuit when an overload occurs. While this is important to protect the motor, it also protects the wiring and other components such as circuit boards. The second is short circuit protection. This occurs when an excessive current flows through a conductor, caused by damage. Here, the fuse will sense the current and open the circuit, protecting the motor and other components.

The 0458004.DR is typically used in applications where a motor is used, such as industrial machinery, pumps, compressors and other electrical systems. It is designed to meet the requirements of UL248 (standard for general purpose fuses) and UL 60669-2-1 (standard for motor-Protecting Fuses).

The working principle of the 0458004.DR is based on the concept of current interruption. When a current exceeds the overload or short-circuit limit, the fusible element of the fuse melts and opens the circuit, thereby interrupting the current and preventing further damage. The current rating of the 0458004.DR is determined by the type and size of the contacts, the construction of the fuse, and the operating environment.

The 0458004.DR is designed for intermittent sticking duty. It is provided in a heat-resistant, moulded red case with a cable lug connection on each end. The case has a lip that is designed to ensure a secure fit. The fuse is mounted on a mounting plate, screwed into the wall of the electrical system. There is also an integral base that is designed to prevent the fusible element from coming into contact with combustible material.

The 0458004.DR has a wide range of application fields, owing to its ability to provide reliable protection for all kinds of electrical systems and motors against short circuits and overcurrents. It offers superior performance, robust construction and reliable protection, and is suitable for both residential and commercial applications.

In summary, the 0458004.DR is a dual-rated fuse that provides motor overload and short circuit protection. It is designed to meet the requirements of UL248 and UL 60669-2-1, and is made with heat-resistant, moulded red case with cable lug connections. It is ideal for use in industrial machinery, pumps, compressors, and other electrical systems, and provides reliable protection against short circuits and overcurrents.

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