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29 2024-08

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　　Choose the self recovery fuse model

　　Maintain current: The maximum amount of current that a resettable fuse can withstand before tripping and transitioning from a low resistance state to a high resistance state. The holding current of the fuse is higher than the maximum power in the circuit, so it will not trip during normal operation.

　　Trip current: The amount of current that causes a fuse to trip and disconnect the circuit. Resettable fuses have a higher tripping current than traditional fuses and are designed to quickly trip under overcurrent conditions. The tripping current usually exceeds the holding current.

　　Rated voltage: The maximum voltage at which a fuse can operate safely without breakdown. The rated voltage of the selected fuse must match or exceed the circuit voltage used.

　　Maximum current: The maximum amount of electricity that can be passed through the above fuse, which can cause the fuse to overheat and potentially cause damage. The maximum rated current is usually specified by the thermistor manufacturer and is based on the size, material, and design of the thermistor.

　　Maximum Trip Time (MTT): The longest time required for a device to switch from a low resistance state to a high resistance state when a fault current occurs. The tripping time of PPTC devices is defined as the time required to trip the device from the beginning of the fault current. The time depends on the magnitude and duration of the fault current, as well as the ambient temperature.

　　Typical power: The amount of power typically dissipated when a fuse is tripped in a static air environment at 23 ° C.

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