0455.400MR

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The 0455.400MR is one of the most important components of the fuses, and it plays a key role in many safety and emergency applications. It is used in a variety of industries to provide both current and temperature protection for circuits and electrical systems.

The 0455.400MR is a medium-voltage, current-limiting, thermal-magnetically operated fuse with an integrated temperature control. This fuse is specifically designed for medium voltage applications such as power distribution, distribution automation, and industrial control. It can be used with both DC and AC applications.

The 0455.400MR has a critical current rating of 400A and can operate at currents of up to 600A. It has a maximum interrupting current rating of 15kA at 440V. The operating temperature range of the fuse is between -50°C and +85°C, with a storage temperature of -55°C to +85°C.

The 0455.400MR is designed to provide reliable protection from overcurrents and excessive temperatures. It is a highly reliable component that provides excellent safety and emergency protection when used in residential, industrial, and commercial applications. The fuse is designed with both temperature and current limiting characteristics, allowing it to tolerate short-term and steady-state overloads.

The 0455.400MR has a unique working principle that combines temperature and current-limiting. It has a thermal-magnetic bimetal that is designed to respond to both current and temperature spikes. When the temperature rises above the operating temperature range, the bimetal expands and forces the contact arm of the fuse up, breaking the circuit and providing protection.

When the current exceeds the critical current rating of the fuse, the bimetal splits, resulting in an increase in the inductance of the copper coil. This increases the voltage drop across the fuse, which causes the contacts to open and break the circuit. This is known as the current-limiting function of the fuse.

The 0455.400MR is a valuable component for use in a variety of industries and applications. It provides reliable protection from overcurrents and excessive temperatures, making it a must-have for safety and emergency applications. It is a highly reliable component that can tolerate short-term and steady-state overloads, making it a great choice for industrial, commercial, and residential applications.

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