8020.0519.PT

Fuses

A fuse is an electrical device used in electrical or electronic circuits in order to protect from excessive currents. The 8020.0519.PT is a specialized type of fuse designed for protection in photovoltaic (PV) systems. It is designed to provide overcurrent and short circuit protection in the positive and negative DC lines in a photovoltaic system.

Application Field

The 8020.0519.PT is designed for use in medium-capacity photovoltaic systems, mainly to protect photovoltaic solar cells from overcurrent or short circuit situations. The fuse can be used in PV systems for arrays with powers ranging from 3kW to 40kW. It can also be used in individual strings up to 100V DC.

Working Principle

The fuse operates when the current in the protected circuit exceeds the trip current rating. The 8020.0519.PT has an auto reset function that activates after the fault is cleared. The device also uses an optical detection mechanism that is able to detect faults before the internal mechanisms are activated. This ensures the fuse is able to protect the system from overcurrent and short circuit faults.

The fuse is made of a ceramic body with a metal firing head. When the current in the circuit exceeds the trip current rating, the metal firing head melts, creating an arc, which causes the fusing element to heat up and expand. This expansion triggers the internal mechanisms, which trip the fuse, stopping the flow of current through the circuit.

The fuse is a low maintenance component, but it should be checked regularly and replaced if necessary. If the fuse is not working correctly or has been damaged, it can cause a short circuit or fire, which can be very dangerous. It is important to make sure the fuse is installed correctly and is compatible with the system.