RUEF300U-2

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PTC resettable fuses are widely used in consumer and industrial settings to help protect electrical circuits from dangerous overload conditions. One example of a PTC resettable fuse is the RUEF300U-2. The RUEF300U-2 offers built-in overcurrent protection that will turn off the circuit when the current exceeds the fuse’s rated hold current, thus helping to prevent damage to the circuit.

The RUEF300U-2 has a broad range of applications. It can be used in a variety of consumer and industrial devices, such as audio amplifiers, digital and video equipment, LED lighting, DC power supplies, solar inverters, industrial automation equipment, telecommunications equipment, and medical electronics. It is also suitable for controlling currents in automobile, aerospace, and telecommunications systems.

The working principle of the RUEF300U-2 is based on the concept of a bi-metal strip. This consists of two discs of metal, each having a different expansion coefficient when exposed to heat. When the current is low, the bi-metal is in its relaxed position, holding the contacts of the circuit open. When the current exceeds the rated hold current, the bi-metal strip heats up and expands, pushing the contacts together, thus completing the circuit. When the current drops below the rated hold current, the bi-metal cools and contracts, disconnecting the circuit. In this way, the RUEF300U-2 provides reliable overcurrent protection.

The RUEF300U-2 has a number of useful features which make it well suited to its intended applications. It has a low profile, enabling it to be fitted easily into tight spaces. It also has a fast response time and a low temperature coefficient (0.5% per degree Celsius), meaning that its performance is not affected by changes in ambient temperature. Its high surge capability also ensures it can handle sudden spikes in current without tripping.

The RUEF300U-2 is a versatile and reliable PTC resettable fuse that is well-suited to a wide range of applications. Its bi-metal design provides effective overcurrent protection, while its low profile, fast response time, and high surge capability ensure that it can be successfully employed in a variety of consumer and industrial devices.

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