0287040.H Circuit Protection

0287040.H Application Field and Working Principle

The 0287040.H fuse is used in power systems for protection from short circuits and overloading. The unique properties of this fuse make it especially suitable in applications such as electric motors, air conditioners, inductance-free contactors and circuit breakers. The fuse has a non-current-limiting characteristic and is suitable for up to 40 amps.

The 0287040.H is a time-delay fuse with a very short melting time, allowing it to provide functionality both in low and medium voltage applications. The fuse is able to self-reset after the short circuit is cleared and the disconnect is activated. As a result, the user does not need to replace the fuse after a short circuit incident.

The fuse works by using an electrical current through two metal elements, with a certain amount of thermal energy resulting from resistance. Once the current reaches the pre-determined threshold value, the thermal energy created by the resistance causes the fuse elements to liquefy. This process prevents additional current from passing through, and thus protecting the components.

The 0287040.H fuse is an amazingly efficient device that has the capability to protect various electrical systems from damage by short circuits and over current. The time-delay property of the fuse allows it to protect against low and medium power short circuits, and the self-resettable feature allows for easy maintenance.