5TTP 400-R

Fuses

Fuses are electrical safety devices used to protect devices from dangerous levels of current. They are used in almost all electrical and electronic equipment, and are a key part of the electrical safety system in modern industrial and residential applications. One of the most common types of fuse is the 5TTP 400-R.

Application Field

The 5TTP 400-R is a fast-acting time-lag fuse designed for use in many different industrial and residential applications where overcurrent protection is needed. It can be used in power supplies, motors, AC circuits, and other electrical and electronic devices where high inrush currents and/or large overloads are possible. The 5TTP 400-R is rated for currents up to 400A and are typically used in circuits with voltages as low as 120V and up to 600V.

Working Principle

The 5TTP 400-R fuse consists of a metal wire or strip enclosed in a ceramic cylinder. When the current flowing through the fuse reaches the maximum rated current, the wire or strip melts, opening the circuit and stopping the current flow. The melting of the wire or strip causes an increase in resistance, creating a higher temperature in the wire which eventually causes it to melt. This allows the current to be stopped quickly, before the temperature in the circuit gets too high and cause permanent damage.

The 5TTP 400-R fuse also has a time-delay feature. This feature prevents the fuse from being overloaded by short circuit currents or currents caused by transient surges. When such a current is detected, the fuse will continue to carry the current for a certain amount of time before it finally trips. This time is known as the fuse’s time-delay. The time-delay feature of the 5TTP 400-R helps to ensure that it will be able to handle transient surges without tripping, while still providing fast protection for dangerous faults and overloads.

Conclusion

The 5TTP 400-R is a fast-acting time-lag fuse designed for use in many different industrial and residential applications where overcurrent protection is needed. It provides fast protection in case of dangerous faults and overloads, while also providing a time-delay feature to protect against short circuit currents or transient surges. The 5TTP 400-R is rated for currents up to 400A and are typically used in circuits with voltages as low as 120V and up to 600V.