0891020.U

0891020.U Application Field and Working Principle

0891020.U fuses are relatively small, square-shaped devices that are used as protective devices in a circuit. These fuses are designed to protect circuits from overcurrent and short circuit conditions, and from potential dangerous arcs caused by de-energizing current-carrying conductors. The 8091020.U fuses are designed to interrupt a circuit by overcurrent protection, while still allowing normal current flow.

The 8091020.U fuse can be used in systems operating up to a maximum of 1000 volts AC or 650 volts DC with an interrupt rating of up to 200kA. They are particularly suitable for protecting motor circuits, especially as they can be connected to other motor circuits or motor controllers. This fuse is also used to protect equipment in the automotive, medical, communications, and consumer appliance industries.

Working Principle

The 8091020.U fuse works by melting a piece of metal wire inside a ceramic holder, when a certain amount of current flows through it. The metal wire acts as a conductor, allowing current to flow until it heats up and melts due to the high current. When the wire melts, the current is stopped from flowing, and the circuit is protected. To reset the fuse after it has been triggered, the wire needs to be replaced.

The 8091020.U uses a metal wire with a higher resistance than other wires, such as copper, which prevents it from heating up as much. This helps to keep the current at a safe level, and prevents the wire from melting prematurely. The metal wire is also designed to melt quickly when it does become exposed to an excessive amount of current, so that the circuit is quickly interrupted.

When the 8091020.U fuse is triggered, it stops the current from flowing, protecting the circuit from damage. The fuse is designed so that it can be replaced easily and quickly, so that the circuit can be restored to working order quickly.

Conclusion

The 8091020.U is designed to protect circuits from overcurrent and short circuit conditions, and from potential dangerous arcs caused by de-energizing current-carrying conductors. It is suitable for a wide range of applications, including automotive, medical, communications, and consumer appliance industries. The fuse is triggered when a certain amount of current flows through it, and it is designed to quickly interrupt the current in order to protect the circuit.