HEJ-AB Circuit Protection

Introduction to HEJ-AB Fuseholders

HEJ-AB fuseholders are designed to protect electrical circuits from overload and short-circuits by passing an electric current between two points when the pre-set current limit is exceeded. The fuseholder itself is composed of three components: a housing, a retainer clip, and a spring. Each of these parts is critical to the working principle of the fuseholder.

Design

The HEJ-AB fuseholder is composed of a one-piece cylindrical housing that houses the retainer clip and the spring. The retainer clip is designed to hold the fuse in place, while the spring is designed to provide pressure to the fuse in order to ensure proper contact with the electrical circuit. The two pieces are made from steel, with the outer housing being zinc-coated for corrosion protection. The contact clips are also made from steel and are tin-plated for corrosion protection.

Application Field

HEJ-AB fuseholders are designed for use in applications that require overcurrent and short-circuit protection. These fuseholders are most commonly found in vehicle, industrial, and residential electric circuits. In particular, these fuseholders are popular for use in automotive applications, such as power distribution modules, electric and hybrid electric vehicles, and motor controllers.

Working Principle

The working principle of the HEJ-AB fuseholders is relatively simple. When the pre-set current limit is exceeded, the fuse melts and the electrical current is interrupted, thus protecting the circuit. The fuseholder is designed such that it will not allow the current to re-establish contact with the circuit until the fuse is replaced. This way, the circuit is protected from any further overload and short-circuits.

Conclusion

The HEJ-AB fuseholder is a reliable and effective way to protect electrical circuits from overload and short-circuits. By utilizing a one-piece housing, retainer clip, and spring, the HEJ-AB fuseholder is capable of providing superior protection to a wide variety of automotive, industrial, and residential electric circuits. As such, the HEJ-AB fuseholder is an ideal choice for circuit protection.