Littelfuse Automotive Fuses

Littelfuse is a cornerstone of the automotive electrical landscape, famously known for inventing the electronic automotive fuse. This specific product, the ATO fuse, was developed by Littelfuse in the 1970s and has since become the global standard for circuit protection in vehicles. This vintage packaging explicitly states manufacturing in Des Plaines, Illinois, USA, where the company stayed headquartered for decades.

Today, Littelfuse Inc. is a publicly traded multinational company that has expanded significantly beyond automotive fuses into industrial power, sensors, and semiconductors. While it operates manufacturing facilities globally to support its worldwide distribution, its heritage and corporate leadership remain firmly rooted in the United States. It continues to be the dominant brand for circuit protection components across the automotive and electronics industries.