PTR030V0400-BK

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PTC Resettable Fuses are a type of self-resetting fuses used to protect circuits and devices from over-current or overload conditions. The PTC Resettable Fuses are usually composed of a PTC thermistor, a bi-metal disc, and a series resistor. The PTC thermistor element will detect the temperature increase caused by the overload current, and in turn will trip the bi-metal disc, which will interrupt the flow of current killing the circuit. It is only a temporary break, and the circuit will reset when the temperature has cooled off. The PTC Resettable Fuses are available in a wide range of sizes, designs, voltage and current ratings.

One of the popular PTC Resettable Fuses is the PTR030V0400-BK, which is designed for use in telecommunications and electronic equipment. The PTR030V0400-BK has an operating temperature range of -40°F to +185°F and a rated voltage of 30 Volts. Its maximum time-delay current is 4 Amps and its hold current is 0.05 Amps.

The working principle of the PTR030V0400-BK is relatively simple. In case of an overload, the PTC thermistor element will detect the temperature rise due to a high current, and the bi-metal disc will trip, killing the circuit. As the temperature cools down, the bi-metal disc will reset itself, and the current will again be allowed to flow through the circuit. In order for the PTR030V0400-BK to reset, the current must be lower than 0.05 Amps. If the current is higher than the hold current, the circuit will remain open. The main function of the PTR030V0400-BK is to prevent circuit overloads and to protect the circuit and the equipment connected to it.

The PTR030V0400-BK is designed primarily for telecommunications and electronic equipment, but can be used in other applications as well. The PTR030V0400-BK is suitable for use in the automotive industry, industrial automation, avionic systems, and power supplies. It is also suitable for use in control circuits, data storage systems, robotic applications, medical equipment, and test and measurement instruments. Depending on the application, the PTR030V0400-BK can be used to protect power supplies, transformers, and motors.

In summary, the PTR030V0400-BK is a popular type of PTC Resettable Fuses used for protecting circuits and devices from over-current or overload conditions. The main function of the PTR030V0400-BK is to prevent circuit overloads and to protect the circuit and the equipment connected to it. The PTR030V0400-BK is designed primarily for telecommunications and electronic equipment, but can also be used in other application areas such as the automotive industry, industrial automation, avionic systems, and power supplies.

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