Video: Heavy Duty Battery Switches

500 amp, sealed, IP-rated, dual-pole battery switch disconnects all vehicle electrical power in applications with two circuits, or both positive and negative isolation.

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Protect Critical Water/Wastewater Operations

Learn how to upgrade and protect these critical infrastructures

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SP3042 Series Bidirectional Discrete TVS Diode Arrays

Protects high-speed HDMI, USB2.0, USB3.0 and eSATA interfaces

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90 Years of Innovation and Engineering Expertise

Learn about our history of innovation and view a timeline of Littelfuse milestones.

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Protect Critical Power Electronics

New Extreme Current Limiting POWR-SPEED line of High-Speed Fuses

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Don’t miss these Littelfuse events!

Find out where and when the most important events in the industry will take place.

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New Semiconductor Product
Information Available

Acquired semiconductor product lines are now fully integrated with Littelfuse.com: Thyristors, TVS Diodes, Ignition IGBTs.

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Keep Your Distance and Stay Safe!

The new MP8000 Bluetooth® Enabled Overload Relay can be monitored from your smart phone

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