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Get your copy of the updated POWR-SPEED® catalog to learn more about our reliable and extremely fast-acting family of high-speed fuses. Engineered to reduce the amount of short circuit current and improve the life of your power semiconductor devices, this expanding line of fuses now includes bladed square-body models to meet even more applications.

Littelfuse products are vital components in applications that use electrical energy, from consumer electronics to vehicles and industrial facilities. Our history of innovation and technical expertise enable us to provide objective, comprehensive, and personalized customer solutions.

We offer the industry’s broadest and deepest portfolio of circuit protection products, with growing platforms in power control and sensing. We are expanding into adjacent markets as part of our corporate strategy of accelerated organic growth and strategic acquisitions. These markets include power semiconductors, heavy-duty switches, magnetic, optical, electromechanical, and temperature sensors; and products that provide safe control and distribution of electrical power.

With more than 50 sales, manufacturing, and engineering facilities worldwide and a global network of distribution channels, Littelfuse is the preferred brand of leading manufacturers everywhere.


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Ground-Fault Relays, Ground-Check Relays, Neutral-Grounding Resistors and Monitors, Motor- and Feeder-Protection Relays, Enhanced Overload Relays, Voltage and Phase Monitors, Alternating Relays, Pump Controllers, Load Sensors, Timers, Surge Protection Devices, Fuses and Fuseholders, Distribution Blocks

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