5ST 200-R

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Fuses are safety devices that are designed to protect electrical circuits from damage caused by excessive current. The 5ST 200-R fuse is a type of high-performance, current-limiting fuse and is often used in industrial applications. This article will explore the application field and working principle of the 5ST 200-R fuse.

Application Field

The 5ST 200-R fuse is designed to provide superior current-limiting performance in a broad range of industrial applications, such as industrial machinery, HVAC, medium-voltage switchgear, transformers, motor control centers, and control panels. The fuse is also suitable for use in other devices, such as pumps, current limiter boxes, batteries, welding machines, and condensers. In addition, the 5ST 200-R fuse offers a wide range of configurations, including 250V Class J, 400V Class L, 600V Class R, and 800V Class T.

Working Principle

The 5ST 200-R fuse is designed to work in two different ways when subjected to an excessive current. The first is the "time delay" function, where the shape of the fuse element allows a gradual increase in resistance as the current rises. This allows the fuse to protect the circuit by limiting the current without interrupting the normal flow of current. This is particularly important in applications where long-term overloading may occur.

The second way in which the 5ST 200-R fuse works is its "instantaneous response" function. When the current rises beyond the predetermined level, a thermally sensitive element in the fuse will instantly react to the heat and open the circuit. This ensures that the circuit is protected from further damage in the event of a surge or other overloads, while at the same time minimizing the danger to the user.

The 5ST 200-R fuse is also designed to be "self-recovering," meaning that after the thermal element opens the circuit, the internal fuse element cools down to its normal state and then resumes its function. This ensures that the fuse is able to provide reliable protection for the electrical circuit without requiring a fuse replacement.

Overall, the 5ST 200-R fuse offers a wide range of features and benefits for industrial applications. The fuse is designed to provide superior current-limiting performance, along with excellent thermal response and self-resetting capabilities. With its wide range of configurations and features, the 5ST 200-R fuse is a reliable and cost-effective choice for a variety of high-performance industrial applications.

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