Littelfuse BD280 and BD540 PolySwitch Automotive High-Temperature Bladed PPTCs provide resettable overcurrent protection for passenger vehicles and heavy truck wire harnesses. The PolySwitch bladed contact devices feature a 2.8mm and 5.4mm form factor to facilitate easy, one-to-one replacement of mini-sized fuses and Type II bimetal circuit protection devices in 12V vehicle systems. The devices help to reduce the weight of wire harnesses. PPTC devices distributed in a circuit can allow the use of smaller wire sizes with the resulting harnesses. Users can forego looping back and forth around a fuse box and place the protection where needed. The solid-state composition of the PPTC devices helps provide reliability.
