PTR030V0900-TR

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PTC Resettable Fuses are a type of input protection device that are designed to protect electrical circuits from overcurrent damage caused by excessive electric shocks or short circuits. PTC resettable fuses, sometimes called polyfuses, are non-replaceable devices with a built-in positive temperature coefficient that trips and opens the circuit if too much current is passing through it. PTC resettable fuses are available in a variety of different sizes and current ratings.

The PTR030V0900-TR is a PTC resettable fuse with a rating of 30V and 900mA. It is suitable for use in many different types of applications including automotive, consumer electronics, audio/video components, toys, and more. The PTR030V0900-TR is a glass-encapsulated, glow-discharge device with a typical operating temperature range from -40 to +85°C. It offers a low resistance path and a high voltage breakdown characteristic for overcurrent protection.

The PTR030V0900-TR PTC resettable fuse has a very simple working principle. When the ambient temperature is lower than a certain value, the PTC fuse behaves like an ordinary conductor, allowing electrical current to pass through with low resistance. When the ambient temperature increases, the fuse begins to behave as an insulator, preventing current from passing through due to the increased resistance in the path. At the same time, the heat generated by the current will cause the fuse to expand, putting pressure on the encapsulated glass and breaking the contact points. This causes the fuse to trip, opening the circuit and stopping the flow of current.

Once the current is removed, the PTR030V0900-TR will reset itself as the temperature drops back down. This allows the circuit to be powered up and current to flow through again. If the overcurrent occurs again, the process is repeated until the fault is fixed. This makes it an ideal device for use in applications where overcurrent protection is needed, such as automotive electrical systems, consumer electronic devices, lighting fixtures, and many more.

In summary, the PTR030V0900-TR is a PTC resettable fuse designed to protect circuits from overcurrent damage. Its working principle is based on a positive temperature coefficient, which causes the fuse to trip when the current exceeds a certain level, cutting off power to the circuit. Once the current is removed, the fuse resets itself and the circuit can be powered up again. This makes it ideal for use in a variety of different types of applications.

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