FWJ-125A

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Introduction

The FWJ-125A is a specialized electrical device used to protect circuits and wiring from excessive current. It is designed to blow open and disconnect the circuit in the event of an overload, thereby preventing further damage or risk of fire. In this article, we will discuss the application field and working principle of the FWJ-125A.

Application Field

The FWJ-125A is typically used to protect residential, commercial and industrial electrical circuits. It can be used for a range of low voltage and high voltage applications, both AC and DC. It is ideal for protecting circuits carrying large amounts of current in applications such as air conditioners, refrigerators, heaters, and motors. The FWJ-125A is also used to protect wiring and outlets from overloading.

Working Principle

The FWJ-125A has a melting link contained within a metal case. The melting link is made of a material that melts in the event of excessive current. When the current passing through the link exceeds its rated value, the link melts and blows open, interrupting the circuit and preventing further damage. The melting link is designed to release the current and reset itself after the current returns to a normal level.

The FWJ-125A also has an internal fuse contained within the case. This fuse is designed to detect any short-circuiting that may occur in the circuit. When a short-circuit is detected, the fuse will blow open and disconnect the circuit, preventing further damage. The fuse can be manually reset after the short-circuit has been cleared.

The FWJ-125A has an indicator light which signals when thelink or fuse has blown. The indicator light will be on at all times when the fuse is in place and functional, and off when the link or fuse has blown. This allows for easy diagnosis of circuit protection faults.

Conclusion

The FWJ-125A is a specialized electrical device designed to protect circuits and wiring from excessive current. It has a melting link which melts in the event of an overload, a fuse for detecting short-circuits, and an indicator light for easy diagnosis of circuit protection faults. The FWJ-125A can be used for a variety of residential, commercial and industrial applications, and is ideal for protecting circuits carrying large amounts of current.

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