LF SERIES FUSE BLOCK TECHNICAL BROCHURE Now Available Full Line of Fuse Blocks and CoversSmaller Footprint An Indication of Value Provides Space Savings Littelfuse understands the challenge of constantly improving OEM products thats why we developed a brand new line DIN-Rail Mounting of next-generation fuse blocks. Eases Installation The LF Series fuse blocks. Smaller. More efficient. More valuable to the user. These products meet design and Indication Improves business objectives, provide value and differentiate OEM Functionality products from the competition. Competitors Class J Blocks Littelfuse LF Series Class J Blocks