RXEF375-1

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Introduction

PTC Resettable Fuses are an innovative type of fuses that use Positive Temperature Coefficient (PTC) technology to provide circuit protection for electronic circuits. The PTC Resettable Fuses offer a wide range of protection features, such as overload protection, overvoltage protection, and short circuit protection. These are commonly used for DC and AC applications.

One of the most popular PTC resettable fuses is the RXEF375-1. This unit is designed to provide protection against surges and short circuits to 15A at 417VAC. It has advanced features such as current limit protection, open thermal protection, low impedance protection and short circuit protection. It can also be used for EMI/RFI filtering, power conditioning, and improved reliability.

Application Field

The RXEF375-1 PTC resettable fuse can be used in many different types of applications, including industrial, automotive, medical equipment, instrumentation, control, HVAC, and telecom applications. It can be used to provide protection against surges, shorts, overvoltage, and overcurrent conditions. The fuse is UL recognized, CSA certified, and meets the requirements of IEC 60950.

In automotive applications, the RXEF375-1 PTC fuse offers excellent protection against solenoid feed circuits and can be used to provide short circuit protection for starter and fuel injector circuits. In the telecom industry, this fuse can be used for AC and DC power supply or distribution circuits, telecom central office and termination, AFCI protection, and more.

The RXEF375-1 is also well suited for industrial applications, such as industrial lighting, pump motor protection, and circuit protection for motor controllers, UPS systems, HVAC systems, and more. In the medical industry, it can be used for protecting equipment from overcurrent, overvoltage, and short circuit.

Working Principle

The RXEF375-1 is a PTC resettable fuse that works by using a PTC element, which is a semiconductor and a temperature detector. When the current in the circuit exceeds the fuse\'s rated current, the temperature of the PTC element increases. This increase causes the resistance of the PTC element to increase, thus limiting the amount of current in the circuit.

When the current in the circuit is less than the rated current, the temperature of the PTC element decreases, and the resistance decreases. This allows the current to flow back into the circuit. With regular fuses, the fuse would break, while the PTC resettable fuse resets. This feature makes the RXEF375-1 very useful in applications that require frequent resetting, such as power supplies and control circuits.

Conclusion

The RXEF375-1 PTC resettable fuse is an innovative type of fuse that provides circuit protection for many types of applications. It offers advanced features such as current and open thermal protection, low impedance protection, and short circuit protection. It is UL recognized, CSA certified, and meets the requirements of IEC 60950. The RXEF375-1 is suitable for many types of applications such as HVAC, automotive, industrials, medical, telecommunications and more. The PTC fuse works by using a PTC element, which increases resistance when the current in the circuit exceeds the rated current, thus limiting the current in the circuit.

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