What is Fuse Resistor?
Wirewound Fuse Resistors
Wirewound Fuse Resistor
Wirewound Fuse Resistors are designed to function as a normal resistor under normal conditions and as a fuse at high loads. In the WWF series, resistors up to 5W are color-coded with a resistance value of 3 bands as well as a tolerance band. An additional white stripe indicates that the resistor is fusible. For resistors 6W and above, the value is printed on the resistor.
Which resistor is used for the fuse?
Fusible Film Resistors are used in a variety of low power and low surge applications. These include low-level fire safety, surveillance and maintenance, high-end audio/video systems, environmental management systems and controls, and laser printers.
Applications of Fuse Resistor
- Overload or surge production
- Low-level fire safety
- Used in laser printers
Fuse Resistor Color Code
Queen Mao resistors color-coding system is applicable to carbon films, metal films, metal oxide films, fusible and coiled axial wires. This system is used for resistors when the area is large enough to print the last resistance value.
fuse resistor color-code
Currently, Queen Mao’s resistance color-coding system requires automation. The first three bands closest to one end of the resistance are used to determine the resistance. The fourth band indicates the resistance tolerance. Additional information can be obtained from the first band.
Usually, if the additional fifth band is black, the resistor is a wireless resistor. If the fifth additional band is white, the resistor is a fusible resistor. If there is only one black band in the center, the resistance is called the zero-ohm resistance. The colors of the first two bands indicate the numerical value of the resistance. The third band represents the power-off multiplier -10.