LVR200S

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PTC Resettable Fuses are current-limiting devices designed to provide circuit protection. They are used to protect high-power circuits from short-circuits, surges, and overloads. LVR200S is a type of PTC Resettable Fuse that is designed for use in automotive, industrial, and high-power applications. This article will discuss the application field and working principle of LVR200S.

Application Field

LVR200S is designed to provide circuit protection for automotive, industrial, and high-power applications. Its unique design allows it to handle ratings of up to 200 amps, providing short-circuit protection up to 600 volts. It also has the ability to operate at a wide range of temperatures, from -40°C to +150°C. This makes it perfect for protecting circuits in extreme conditions, such as in electric vehicles, servers, and industrial control systems.

Additionally, the LVR200S is designed to be self-resetting. This means that after a short circuit or other issue occurs, the device will automatically reset itself, allowing the circuit to become operational again without the need for manual intervention. This makes it an ideal choice for applications that need to be quickly restored after an issue occurs.

Working Principle

The LVR200S utilizes a “positive temperature coefficient” or PTC device. This device is made up of two conductors - a resistor and a thermistor - which are formed into a single unit. Under normal operating conditions, the thermistor has a relatively low resistance, allowing for the flow of electricity. However, if the current exceeds the device’s rated maximum, the resistor will heat up due to the increased current, causing the thermistor to increase its resistance. This effectively “clamps” the current flow, providing short-circuit protection.

Once the current has been clamped, the heat generated will eventually cause the PTC device to cool, reducing its resistance and allowing the current to flow again. This process is known as “self-resetting” and it is what makes the LVR200S so desirable for applications that need to quickly restore themselves after a fault. Additionally, the device is built to withstand high temperatures, making it suitable for extreme temperature applications.

Conclusion

The LVR200S is a PTC Resettable Fuse that is designed for automotive, industrial, and high-power applications. It is rated up to 200 amps and can operate at temperatures ranging from -40°C to +150°C. The device is self-resetting, meaning it can quickly restore itself after a short-circuit or other issue. Its robust construction makes it suitable for extreme temperature applications, making it an ideal choice for those looking for reliable circuit protection.

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