OVERCURRENT PROTECTION

This is a handy little device that can save your system from smoking. A resettable fuse (also known as a PTC) is a resistor that has very unique properties. For this model, if your circuit tries to draw more than 250mA of current (if you have a bad short for instance) the PTC would 'trip' (by heating up). The increased resistance (trip state) would break the circuit and allow only a small leakage current. 5 pages.

PolySwitch^® PTC Devices Overcurrent Protection Device. Electrical Rating Voltage: 72V MAX Current: 40A Max. 1 page.