FRN-R-75

The FRN-R-75 is an Electrical Specialty Fuses designed for protecting electrical circuits from overload or short circuits. It is used to protect AC circuits, DC circuits and low voltage applications. The fuse is a current-limiting type which provides reliable protection without creating dangerous power surges or other severe fault conditions.

The FRN-R-75 uses an explosion-proof fuse element to stop current flow in the event of over-heating or short circuit. The fuse element is made of a conductive material that melts or vaporizes under excessive current. This causes an increase in voltage drop across the fuse, which results in an increase in voltage across the load. Once the fuse is blown, the circuit is immediately opened and current stops flowing until the fuse is replaced.

The FRN-R-75 provides different time ratings, which indicate how long it takes for the fuse to blow at the corresponding current. The time-delay is designed to allow for inrush or start up current surges to travel through the circuit, without causing a fuse failure. It also allows enough time for the circuit breaker to trip in the event of an overload.

The FRN-R-75 fuse is rated for a maximum operating voltage of 600 volts AC or 400 volts DC. It is designed to be installed in panels that are certified for use with FRN-R-75 fuse types. The fuse has a steel housing that provides reliable protection from electrical shock hazards. The fuse should be securely mounted in the panel to ensure safety.

The working principle of the FRN-R-75 fuse is relatively simple. When the current through the fuse exceeds the rated current, the elements within the fuse heat up. The excessive heat vaporizes the materials within the fuse, creating a high resistance path which stops the flow of current. This prevents further overheating of connected devices, and also prevents damage from an unexpected power surge.

The FRN-R-75 fuse provides reliable protection for electrical circuits and is suitable for a wide range of applications. It is designed to withstand temperatures up to 221°F (105°C) and is rated for current up to 75 amps.

The FRN-R-75 fuse is a safe and reliable way to protect electrical circuits from damage caused by overloads or short-circuits. It is easy to install and requires no special maintenance or settings. Once installed, the fuse can provide protection for long periods of time without any further attention required.