MF-PSML175-2 Circuit Protection

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PTC Resettable Fuses, such as the MF-PSML175-2, are increasingly common in a wide variety of applications.

Unlike traditional fusing, which is designed to fail and must be replaced upon reaching its current rating, PTC Resettable Fuses are designed to switch on and off to protect products from current overloads. This means they can be used many times during their lifetime, greatly extending their lifespan.

The MF-PSML175-2 Resettable Fuse is designed for 3-Phase 230VAC applications. It has a current rating of 175A and a non-zener voltage of 385VAC. It is fast acting, with an IR drop of just 12mV. The fuse is a polymeric type with high temperature and high performance ratings. It is UL recognized, and meets all requirements for use in conformity with the European Low Voltage Directive 2006/95/EC.

The working principle of the MF-PSML175-2 is based on the use of Polymer Positive Temperature Coefficient (PPTC) technology. PPTC materials are designed to increase in electrical resistance when subjected to current exceeding the rated current of the device. This increase in resistance switches the device off, and the current is interrupted, thus protecting it from too much power. When the current reduces, the PPTC material will cool and the electrical resistance will return to its nominal value, allowing the power to flow again.

In addition, the use of Polyurethane conformal coating helps protect the MF-PSML175-2 against potential damage from mechanical shock, vibration, different temperatures and other environmental conditions. This extra layer of protection helps to extend the life of the product, and ensures consistent operation in a wide range of conditions.

Due to their small size, the MF-PSML175-2 are perfect for use in small spaces. They are lightweight yet durable, making them an ideal choice for many applications, including building automation, lighting controls, industrial equipment and medical devices.

With its unique design and advanced features, the MF-PSML175-2 Resettable Fuse provides reliable and consistent overcurrent protection for a wide range of applications. It has been tested and certified to the most stringent safety standards, making it an excellent choice for use in ever-evolving markets.

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