At this time, no single universal component exists that can solve all circuit protection needs. Hence a multi-billion circuit protection industry has grown of components that limit, block, shunt and crow bar away dangerous surges. Bourns is a leading manufacturer in this industry and has developed a number of different over-current and over-voltage components that, in combination, can provide complete circuit protection solutions. This module will focus on just one of these circuit protection devices, the Multifuse line of resettable fuses.