A PTC Resettable Fuse is an electronic component that is used to prevent too much current in a circuit. They are a good alternative in limiting current that will give your circuits the protection it needs.
The PTC Resettable Fuse has a rise in temperature from the flow of the circuit and will increase the resistance. It limits an increased current level while allowing a safe amount of current. The resistance level will go back to its original state once the temperature is back to normal.
A few places of where these fuses can be located:
Consumer Electronics: mobile phones and protection on solenoids
Medical Equipment: current/voltage input applications
Computers: Hard drives and USBs
You can find our PTC Resettable Fuses in the following link on our website - PTC Resettable Fuses.