Hallo, Can anyone recommend me fuse for DC Current. I will use it to protect solar home system.
1 Like
Are you asking whether we can use fuse for DC current or not?
Yes, we can use a Fuse for any type of current either AC or DC.
Just make sure to select the fuse rating properly.
Ok Mr John , btw I also want to install surge protector. Can you give recomendation of the product ? Thanks
In the most common type of surge protector, a component called a metal oxide varistor , or MOV , diverts the extra voltage. An MOV forms a connection between the hot power line and the grounding line.
An MOV has three parts: a piece of metal oxide material in the middle, joined to the power and grounding line by two semiconductors .
These semiconductors have a variable resistance that is dependent on voltage. When voltage is below a certain level, the electrons in the semiconductors flow in such a way as to create a very high resistance.
When the voltage exceeds that level, the electrons behave differently, creating a much lower resistance. When the voltage is correct, an MOV does nothing. When voltage is too high, an MOV can conduct a lot of current to eliminate the extra voltage.
As soon as the extra current is diverted into the MOV and to ground, the voltage in the hot line returns to a normal level, so the MOV’s resistance shoots up again.
In this way, the MOV only diverts the surge current, while allowing the standard current to continue powering whatever machines are connected to the surge protector. Metaphorically speaking, the MOV acts as a pressure-sensitive valve that only opens when there is too much pressure.
2 Likes
Thank you Mr Vignesh