63D33R

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Introduction

63D33R fuse is a low voltage, high breaking capacity fuse manufactured by the Littlefuse company, which is widely used in applications ranging from low voltage lighting circuits to industrial control circuits. This type of fuse is designed to protect against short-circuits, overloads, and other dangers that may occur in the application circuit, and it is suitable for both AC and DC applications.

Application Field

63D33R is mainly used to protect low voltage lighting, commercial lighting, industrial lighting, motor circuits, and control circuits. The fuse is generally rated at 250 volts AC and 150 volts DC, with a melting I2t value of 140A2s. This type of fuse has a breaking capacity rating of 5000 Amps and is suitable for applications up to 40A.

In addition to being used in various lighting, motor, and control application fields, 63D33R is also used in medical devices, instrumentation, audio, and other sensitive equipment that need protection from dangerous electrical defects. When used in sensitive electrical equipment, 63D33R is usually connected in series with other components in the circuit.

Another application field in which 63D33R is used is the DC distribution system. The fuse can be used to protect the DC distribution system against hazards such as overvoltage and short-circuits. This type of fuse also provides protection against transient overvoltages caused by lightning strikes and other power disturbances.

Working Principle

The 63D33R fuse consists of a ribbon wire contained in a cylindrical metal body with solder-coated ends. The wire is made of a special alloy, which has an extremely low melting point. When a fault occurs in the application circuit, an excessive current flows through the fuse, which heats up the ribbon and melts it. As the fuse melts, it breaks off from the ends of the metal body, thus breaking the circuit and preventing further damage to the circuit components.

The melting I2t value of the 63D33R fuse is an important parameter which determines the amount of energy that needs to be released for the fuse to melt. The higher the melting I2t value, the greater the current that needs to be passed through it for it to melt. The melting I2t value of the 63D33R is 140A2s, which is suitable for applications up to 40A.

The 63D33R also has an anti-sulfuration feature. This feature makes sure that the fuse does not corrode or become oxidized due to the presence of sulfur compounds in the environment. This anti-sulfuration feature further ensures that the fuse operates reliably and efficiently in the long run.

Conclusion

63D33R is a low voltage, high breaking capacity fuse manufactured by the Littlefuse company. This type of fuse is designed to protect against short-circuits, overloads, and other dangers that may occur in the application circuit. It is suitable for both AC and DC applications, and is mainly used to protect low voltage lighting, commercial lighting, industrial lighting, motor circuits, and control circuits. The fuse also has an anti-sulfuration feature that ensures reliable and efficient operation in the long run.

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