RUSB120

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PTC Resettable Fuses are self-resetting and durable temperature-sensitive current-limiting thermistors. They are used to protect electronic circuits against current overload and short circuit conditions, and therefore are very useful for mitigating the effects of accidental overload or a complete short circuit in a wide range of applications.

The RUSB120 is a resettable fuse that provides a high degree of reliability and safety for the circuit it protects. This fuse features an internal PTC element that limits current when it reaches a certain temperature. As current flow begins to increase, the temperature of the fuse element begins to rise. When it reaches its predetermined trip point temperature, the current is interrupted and the fuse element begins to cool down. This cooling allows the fuse element to return to a state where it may be used again.

The RUSB120 is a versatile fuse and can be used in a wide variety of situations. It is suitable for enclosed motor and generator control panels, vehicle circuitry, laboratory and industrial circuits, electronic appliances, lighting fixtures, and other applications where a temperature-sensitive current limiter is needed.

In terms of its operating principle, the RUSB120 is designed with an internal PTC (Positive Temperature Coefficient). This PTC is a thermistor-like component that limits current when its temperature reaches a certain level. When current begins to rise, the temperature of the PTC element rises as well. When the predetermined trip point temperature is reached, the current is interrupted and begins to cool down. This cooling process allows the PTC element to return to its normal state, so that it can be reused for future protection.

In comparison to other traditional resettable fuses, the RUSB120 offers improved levels of protection, as it can handle a much higher overload current, reaching up to 5A, and an operating temperature range as high as +85°C. It also has a fast response time of 8ms and a low power dissipation, making it an ideal choice for many applications.

Ultimately, the RUSB120 resettable fuse provides excellent protection for various applications, such as lighting fixtures, motor and generator control panels, laboratory and industrial circuits, and more. It can handle up to 5A of current, and it features a fast response time and a wide operating temperature range. Its internal design also offers a high degree of reliability and safety, making it an ideal choice for many different electronic devices.

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