S500-1-R

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S500-1-R Application Field and Working Principle

S500-1-R fuses are designed to protect electrical system components and circuits from overload or short circuit damage. The S500-1-R provides both short circuit protection and overcurrent protection in one device, while also providing protection against distortion currents. They save space and reduce installation costs in industrial and commercial applications.

S500-1-R fuses are packaged in a cylindrical body and are made up of two common components: a metal tube and a non-metallic core. The metal tube contains the non-metallic core which is composed of a fuse element, absorbent material, and two metal end caps. The end caps are made of a conductive metal, usually tin or aluminum, and have spring-loaded contact points to connect with the circuit. The absorbent material between the end caps is designed to provide a cushion of insulation when a fault occurs.

When a fault occurs and an overload or short circuit is detected, an electric current passes through the metal tubes and fuse element of the device. The absorbent material between the end caps acts as a thermal resistance. As the current passes through the thermal resistance, the material absorbs heat, causing it to expand and push the end caps apart. This results in an open-circuit, stopping the current flow and isolating the circuit from the fault. Once the fault is cleared, the absorbent material cools and modifies back into its original form, allowing the end caps to reconnect and close the circuit.

S500-1-R fuses are primarily used in industrial applications, such as motor protection and electrical control circuits. In addition to industrial use, they are also used in automotive and other transportation industry applications. For these applications, the S500-1-R is approved by the National Electrical Manufacturers Association (NEMA).

With a 95A interrupting capacity, the S500-1-R is capable of handling large currents in a short period of time. The fuse is also designed with a high break capacity, making it suitable for high-temperature and high-current applications. In addition, the fuse has a variety of design features that make it reliable and stable, including a low-voltage drop design and low contact resistance. This helps extend its life and protect it from heat and other wear and tear conditions.

S500-1-R fuses are a dependable and cost-effective way to protect circuits and components from overloads and short circuits. They provide reliable and dependable protection, are designed with a variety of features for high-temperature and high-voltage applications, have a 95A interrupting capacity, and are approved by NEMA.

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