0216.400H

Fuses: 0216.400H Application Field and Working Principle

Fuses are devices that protect electrical circuits in the event of a surge or overload. The 0216.400H classified as a “slow blow” or “time-lag” fuse is specifically designed for use a standard electrical outlet and provide protection against spikes in current. Time-lag fuses absorb or “blow” the power at a steady rate, instead of instantly resetting or blowing, to protect circuits from the moderate overloads.

What is the 0216.400H?

The 0216.400H is a 0.2-amp 250V fast-acting “time-lag” or “slow-blow” fuse. It is specifically designed for electrical outlets that are rated for 15-amp circuits. The fast-acting fuse is designed to be less sensitive than traditional fuses, and its time-lag feature absorbs or “blows” the power at a steady rate over a specific time period. The fuse is constructed of a metal cylinder with a ceramic end and a silver contacts on each end.

What Application Field Does the 0216.400H Cover?

The 0216.400H is designed to protect electrical circuits from moderate overloads. Because of its slow-blow feature, it can absorb spikes in current that would normally cause a traditional fuse to reset or blow. This makes it ideal for applications where a moderate overload or spike in current is expected, such as outlet strips and surge protectors. The 0216.400H can also be used in applications where a traditional fuse may be too sensitive, such as refrigerators, air conditioners and fans.

What is the Working Principle of the 0216.400H?

The 0216.400H is designed with a time-lag or “slow-blow” feature that allows it to absorb power at a steady rate over a specific period of time. This allows the fuse to absorb spikes or overloads in current without resetting or blowing. The time-lag feature is made possible by a metal cylinder with two contacts, one on each end. The contacts are made of silver, have a ceramic end, and are connected to a wire or other medium to which power is applied. When the power is increased beyond the fuse\'s threshold, the current is absorbed by the ceramic end, causing the silver contacts to heat up and expand. This expansion causes an increased resistance, which limits the amount of current the fuse can absorb.

When the current returns to a normal level, the heat dissipates and the contacts cool, resetting the fuse. This process is repeated over and over again until the maximum level of current is reached, at which point the fuse will blow. This feature ensures that the circuit is not damaged from moderate overloads.

Conclusion

The 0216.400H “slow-blow” or “time-lag” fuse is designed for use a standard electrical outlet and provides protection against spikes in current. It is ideal for applications where moderate overloads or spikes in current are expected, such as outlet strips and surge protectors. The time-lag feature absorbs or “blows” the power at a steady rate over a period of time, limiting the amount of current the fuse can absorb. The 0216.400H is a cost-effective way to provide much needed protection for electrical circuits.