RHEF400-2

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A PTC Resettable Fuse, also known as a polyfuse, is a device that protects a circuit from overload and short circuit damage. The RHEF400-2 is one of these devices and is used in many applications such as consumer electronics, automotive electronics, industrial, and building automation. The device is a small, inexpensive, and effective way to protect a circuit and prevent costly downtime.

These devices work by combining a resistor and thermistor, both of which are temperature sensitive components. As the resistor heats up, it increases the resistance and begins to thermally protect the circuit. When the current exceeds the rated current of the device, the temperature increases and causes the resistor and thermistor to fuse together. This cuts off the current, protecting the circuit from a potential fire or other damage.

The RHEF400-2 is a bi-directional fuse that offers over-current protection for AC, DC, and pulse applications. It features a resistance of 0.4 ohms when fully cooled-down and a maximum current rating of 2A. It has a wide operating temperature range of -40°C to 125°C and is RoHS compliant. The RHEF400-2 is CSA listed for safety and complies with UL 1410 and UL 1414 standards.

The device has a unique two-way protection feature that allows the user to quickly reset the fuse by removing the triggering current. As the fuse cools down, it automatically reactivates and the circuit returns to normal. This allows the user to quickly and easily reset the fuse without the need to replace it, which can save them time, money, and effort.

The RHEF400-2 is simple to install and requires minimal setup. It is a cost effective solution that helps increase equipment reliability and reduce downtime. Its small form factor makes it ideal for use in cramped spaces, as well as in larger applications. And because it is designed to withstand high temperature and high current loads, it is perfect for a variety of applications.

The RHEF400-2 is one of the most popular resettable fuses on the market today. It is highly reliable and offers a wide variety of features that make it one of the best selections for protecting circuits from overload and short circuit damage. With its low cost, quick reset time, and wide variety of applications, it is easy to see why the RHEF400-2 is one of the top PTC Resettable Fuses on the market.

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