RUEF090-1

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PTC Resettable Fuses, also known as polyfuse, is a type of protecting device used to prevent overload in electrical current. It is a safety device activated when the current flow exceeds a certain level, automatically cutting off the current in order to prevent potential fire or injury hazards. RUEF090-1 is a polyfuse for current protection applications. It is widely used in automotive, battery charger, and industrial control apparatuses and systems.

RUEF090-1 has several impressive features. It has a high voltage rating, up to 360VAC, and can handle high current up to 30A. It is small in size, with a cubic package, and is easy to install. Its internal structure is quite simple, consisting of a positive temperature coefficient (PTC) material combined with a metallic contact.

The working principle of RUEF090-1 is relatively straightforward. When the current reaches the set threshold, the PTC material inside will heat up quickly, expanding the contact point between terminals. This rapid expansion will cut off the current and the device will enter a tripped state. The material will also cool down again, returning to its initial shape. This process will provide a temporary shutoff of the current and reset the circuit after it returns to normal.

In this way, RUEF090-1 acts as a type of self-resetting protection system. The fuse will reset itself when the current falls below the set current threshold, avoiding the need for resetting or replacing the device. Furthermore, it can provide protection against both AC and DC over-current or over-voltage variables.

With its high voltage rating, high current, and resetting ability, RUEF090-1 Polyfuse is a popular choice for current protection. Its simple, reliable operation, and easy install make it an ideal solution for many electrical systems. It is widely used in automotive, battery charger, and industrial application, providing the necessary device protection against power supply failures.

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