0ZRA0700FF1A

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PTC resettable fuses, also known as polyfuse, have a variety of applications in power circuits and are composed of two main components: a thermistor and a permanent magnet. The thermistor is often manufactured with a heat-sensitive polymer material that is commonly used in electric circuits. When an excessive amount of current is sent to a circuit component, the PTC thermistor will quickly heat up, causing the permanent magnet to move away. This effectively reduces the flow of current in the circuit, providing protection against overcurrent.

The 0ZRA0700FF1A PTC resettable fuse has a current rating of 7A, a voltage rating of 250V and a maximum power rating of 1.75W. It is designed to provide fast and reliable protection from overcurrent in a wide variety of applications, such as electronic circuit boards, instrumentation, domestic appliances and automotive systems. The 0ZRA0700FF1A is a low-resistance type designed to limit inrush current and to reset itself afterwards.

Unlike traditional fuses, a PTC resettable fuse acts as a current limiter rather than an overcurrent breaker. To protect against overcurrent, the 0ZRA0700FF1A uses a positive temperature coefficient (PTC) thermistor, which has a high resistance level when it is cold and a low resistance level when it is hot. When the current in the circuit exceeds the fuse’s threshold, the PTC thermistor begins to heat up. As the temperature rises, the resistance increases, reducing the current and thus providing protection from overcurrent. The 0ZRA0700FF1A is designed to reset itself when the temperature of the thermistor cools down, allowing the current to return to normal levels.

The 0ZRA0700FF1A is suitable for applications where fast reaction time and high-current protection are necessary. It is generally used in the power supply circuits of electronic devices and various types of motor controllers. The 0ZRA0700FF1A is a PTC resettable fuse with a high resistance and short reset time, providing fast and reliable protection from overcurrent.

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