5TT 4-R

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Fuses

Fuses are important components in the systems of many machines, as they are necessary for the safe operation of the system. Fuses protect the system from dangerous overloads and short-circuits by blowing out the current when it reaches certain levels. There are many types of fuses, including 5TT and 4-R, which have different applications and working principles.

5TT Fuses: 5TT fuses are also known as Plug Fuses and Time-Delay Fuses. They are glass-bodied cylindrical fuses, and have a black or red knob at the top. These fuses feature time-delay, meaning that they wait a certain amount of time before they blow out the current. This allows them to be used in motors and similar systems that require a large but short duration of power. 5TT fuses are available in sizes up to 30-ampere.

4-R Fuses: 4-R fuses are also known as Definite Purpose Fuses. They are plug-in fuses, and feature what is known as Form 102 time-delay characteristics. These fuses are designed to protect electrically powered equipment, such as air conditioners and refrigerators, from short-circuits and overcurrents. They are available in sizes up to 40-ampere, and can handle a maximum of 125-volts.

Working Principle: Both 5TT and 4-R fuses operate on the same principle. They have a strip of metal inside them, which is designed to melt when the current flowing through it exceeds a certain level. When this happens, the metal strip melts and opens up a gap in the fuse, disrupting the circuit and preventing any further current from flowing. This prevents the system from overloads and short-circuits.

Conclusion: It is clear that 5TT and 4-R fuses have different applications and working principles. They both protect systems from dangerous overloads and short-circuits by blowing out the current when it reaches certain levels. While 5TT fuses are used in motors and similar systems, 4-R fuses are designed to protect electrically powered equipment such as air conditioners and refrigerators. They both work on the same principle, and are essential components of any system.

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