FWH-020A6FR

FWH-020A6FR is an electrical specialty fuse¹—an important component of industrial equipment—that helps regulate electrical current and protect circuits from damage due to overloads or short circuits. It is designed to break the circuit in the event of overvoltage or other faults, thereby preventing damage to both the device and the connected equipment.

Application Field

FWH-020A6FR fuses are commonly used in motorcontrol circuits², which are used in many industrial situations and equipment such as conveyors, elevators, pumps, generators, and compressors. They are also suitable for some residential and commercial applications. As an electrical safety device, the FWH-020A6FR is designed to be reliable and durable—able to protect your equipment and environment from overvoltage and other circuit faults.

Working Principle

A fuse typically consists of a thin metal strip connecting two metal ends, which interact with a plastic or ceramic covering. When too much current is passed through the device, the thin metal strip melts, breaks the circuit, and thus, the electrical flow is interrupted.

The FWH-020A6FR melting characteristics are critical for protecting an electrical circuit from failures or surges. The fuse has an instantaneous trip and a temperature-sensitive bi-metal disc³ (BD) to provide fast and accurate protection from high-energy faults, overloads, or short-circuits. The BD has two layers of different materials that expand at different rates under heat, which creates a bend when the nominal temperature is exceeded for a given amount of time. The bent disc triggers the fuse to trip and the electrical current is cut.

Conclusion

Due to its superior technical performance, the FWH-020A6FR is designed for use in a wide range of industrial applications and residential and commercial uses. Its durable construction and working principle make it an attractive and effective electrical safety device for many industries.