B59884C0120A054

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PTC resettable fuses are designed to provide protection against over-current and over-temperature conditions in handheld, battery-powered devices used in consumer, industrial, and commercial applications. The B59884C0120A054 fuse is a multi-purpose resettable fuse with a voltage rating of 20V and a current rating of 4A. It is a single-phase device with a three-pole design that features both thermally-controlled current protection and an overload current protection.

The B59884C0120A054 PTC is ideal for use in a wide range of applications, including consumer and industrial electronics, medical systems, telecommunications, automotive and high-tech applications. The fuse is especially useful in low-profile designs where space constraints require a more compact footprint for the protective device. It is also suitable for use in applications where the current rating needs to be dynamically adjustable or configured to match the application.

The operating principle of the B59884C0120A054 fuse is based on a thermally-sensitive, resistive element. This element is constructed of two-pole Positive Temperature Coefficient (PTC) technology that adjusts its resistance based on the temperature of the device. When the device\'s temperature reaches a certain safe operating level, the thermally-sensitive element increases in resistance. This increase in resistance prevents excessive current from flowing through the device, breaking the circuit and providing protection to the device.

The current protection mode of the B59884C0120A054 fuse is further enhanced by its temperature-controlled mode. This mode is based on the concept of "embedded NTC" (negative temperature coefficient). This concept allows the fuse to provide an additional layer of protection by utilizing its specialized thermally controlled element to limit the current if the temperature of the device exceeds the safe operating level.

The overload current protection mode of the B59884C0120A054 fuse is designed to detect and respond to sudden increases in current. This feature is activated when the current flow in the device exceeds a preset threshold, and the fuse will move to its predetermined resistance value until the current subsides, then reset automatically. This feature prevents overload conditions and provides safe operation, while extending the lifespan of the device.

The B59884C0120A054 PTC resettable fuse is a versatile device that offers enhanced protection and safety for a wide range of handheld, battery-powered devices. Its combination of thermally sensitive current protection, temperature-controlled protection, and overload current protection make it the ideal choice for applications where space and cost are a factor.

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