FNQ-R-4-R1

The FNQ-R-4-R1 is a special type of electrical fuse designed to provide reliable protection for electrical circuits from any type of overcurrent. It has been an integral part of the power distribution industry for many years, providing valuable service in protecting against electrical overloads and faults. The FNQ-R-4-R1 is an example of a type of resistor-fuse, which uses a resistor element rather than a normal fuse element, to limit the current passing through the circuit.The FNQ-R-4-R1 is an overload resistant resistor-fuse designed to ensure safety in low-voltage applications. The fuse consists of a cylindrical element made of a ceramic compound wrapped in a metal jacket, with an insulating ceramic core and a metal core. The metal core is connected to the resistor element and is made of nickel-chrome alloy. This alloy provides a high degree of current-limiting capability and prevents the fuse from blowing for currents up to a certain limit.The working principle of the FNQ-R-4-R1 depends on the resistance of the fuse. When an overcurrent passes through the fuse, the resistor element heats up and reduces the flow of current in the circuit. This limit of current is known as the cut-off point and it is determined by the amount of resistance of the resistor element. If the current exceeds this limit, the resistor element will reach a critical temperature and the excess current is diverted to ground. This prevents the circuit from being overloaded and reduces the risk of fire and other hazards associated with excessive current.The FNQ-R-4-R1 is suitable for use in low voltage AC applications such as fuseholders, portable power tools, home electronics, and other household appliances. It is particularly well suited for use in industrial and commercial applications that require high-current circuit protection. In addition, the FNQ-R-4-R1 is also designed to provide voltage protection for applications such as linear motors and DC power supplies.In conclusion, the FNQ-R-4-R1 is an overload resistant resistor-fuse designed to provide reliable protection for electrical circuits from any type of overcurrent. It is suitable for use in low-voltage AC applications and it is particularly suitable for industrial and commercial applications that require high-current circuit protection. The working principle of the FNQ-R-4-R1 depends on the resistance of the resistor element, which heats up and reduces the flow of current in the circuit, up to a certain limit, beyond which the excess current is diverted to ground.