15HLE-50E

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Part Status:	Active

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Fuses play an important role in modern technologies. Fuses help to protect critical components and power systems from damages caused by over-currents or short-circuits. In this article, we will discuss the application field and working principle of 15HLE-50E fuses, one of the most popular type of fuses. 15HLE-50E fuses are mainly used in photovoltaic (PV) applications. It is designed to protect solar arrays, photovoltaic string circuits, PV bypass diodes, and charge controller from over-currents or short-circuits. The fuse is used in both indoor and outdoor electrical circuits with maximum exposure temperatures up to 105℃. When it comes to its construction, the 15HLE-50E fuse is built with a cylindrical, glass tube with a screw cap at both ends. The fuse is filled with a fuse element that consists of a metal strip (normally copper or silver) with one end connected to the contact screws at both ends of the fuse. The other end of the fuse element is connected to the terminal clip in the centre of the tube. This connection ensures that the fuse stays in place and prevents damage to it if the fuse is moved.15HLE-50E fuses work on the principle of ohmic heating. When over-currents or short-circuits occur, the high current causes the fuse element to heat up. When the current increases enough, the heat causes the fuse element to become soft and eventually melt, thereby breaking the connection and interrupting the current flow. The 15HLE-50E fuse is designed to withstand a current of 50 amperes and has a voltage rating of 1000VDC. Its breaking capacity is at least short-circuit current of 50,000 amperes. The maximum tolerance of the fuse is +5/-30%, which makes15HLE-50E reliable in protecting PV systems from damage caused by variances in electrical current. 15HLE-50E fuses are also designed with built-in indicator lights that let you know when the fuse has blown. When an overload or a short in the circuit occurs, the indicator changes colour from green to red. This allows you to quickly identify the problem and replace the fuse to restore the power supply. In conclusion, the 15HLE-50E fuse is an ideal choice for solar PV applications due to its high tolerance levels, high breaking capacity, and built-in indicator lights. This fuse helps to protect expensive solar PV systems from damages caused by over-currents and short-circuits.

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