40FE

Near-short-circuit and over-current conditions are the primary cause of electrical damage and fire, no matter what type of equipment or system is employed within an application. As a result, the use of specialty fuses is essential in a wide variety of applications that require high protection and safety levels. Among the many specialties of fuses, the 40FE is one of the most popular, due to its comprehensive features, and wide adoption across the industry.

The 40FE are fast-acting, low-voltage, time-delay fuses and are used to protect electrical circuits and components from voltage and current overloads. They are comprised of two copper-clad steel members (tapered cone) that are separated by an air core. The parts are held together by two stainless steel alloy-spring elements and a central piece, that is welded into the core.

When a fault occurs, the 40FE fuses provide pole-to-pole disconnection of the supply at the rated voltages, and the current rating is set to match the fault level. This instant disconnection helps to reduce the effects of an overload or short circuit. The response time is extremely rapid, typically occurring within a few hundred milliseconds. As a time-delay fuse, the 40FE fuse also offers protection in the event of a sustained over-current or short-circuit condition, helping to limit further damage.

40FE fuses are often used in many different applications, but are especially popular in power and process control systems, AC/DC drives, high voltage applications, as well as telecommunication and motor applications, and electric and hybrid vehicle (EV/ HEV) power systems. Generally, all such equipment require both high performance and conformance with international safety standards.

For power and process control systems, 40FE are primarily used to protect the equipment from over-voltages, over-currents, and short-circuit conditions. In AC/DC drives, they help protect the drive motor, reduce surge currents, and protect the power converter. For high voltage applications, 40FE fuses offer comprehensive protection when medium and high voltage levels occur. Also, as the demand for telecommunication and motor applications increases, the 40FE fuse is often used to provide full protection. Lastly, in electric and hybrid vehicle (EV/ HEV) power systems, the 40FE fuse is used to provide full protection against over-voltage and over-loading of the vehicle’s power system.

By utilizing the 40FE specialty fuses in applications, customers can ensure that their equipment is well protected against any electrical damage, reduce maintenance issues down the road, and be secure in the knowledge that they are in compliance with relevant international safety standards. These fuses come with a range of available ratings and are available in various sizes, making them suitable for a majority of applications.