Littelfuse Statement on COVID-19 - Last Updated: April 6, 2021.Learn More
Temperature Sensors

NTDs Thermistor and RTDs

Littelfuse offers a broad portfolio of negative temperature coefficient (NTC) thermistors, resistance temperature detectors (RTDs), as well as probes and assemblies, for your unique temperature sensing applications

Learn More

New ADR Battery Disconnect Switch

The ADR (Accord Dangereux Routier) Battery Disconnect Switch is a bistable/magnetic, current isolating switch

Learn More
LST Varistor

LST Series SPD Thermally Protected Varistor

Ideal for Type 1 and Type 2 SPD devices used in Residential, Commercial, and Industrial applications

Learn More
Reed Relays

New Reed Relays

Offer Reliable Switching of AC and DC Small Signal to High Voltage Loads.

Learn More
400PV fuse

400PV Series SMD Photovoltaic Fuse

First PV fuse on the market that protects PV roof shingles from reverse overcurrent that can cause heat and fire

Learn More
Battery Disconnect Lockout Lever Kits

New Blister Pack Battery Disconnect Lockout Lever Kits

The Lockout Lever Kit is suitable for use with Cole Hersee brand lever actuated metal case master disconnect switches on applications requiring lockout/tagout

Learn More

Earnings Conference Call

Wednesday, April 28, 2021
10:00 a.m. ET • 9:00 a.m. CT

Join Webcast

Find Your Solution

Discover our broad and deep portfolio of products, where you'll find the right solution for your application.

Browse Products
Renewable Energy

Protection for Renewable Energy Systems

From battery energy storage to solar or wind power systems, Littelfuse understands the challenges of renewable energy circuit protection.

Watch the Video
SPD Guide

Surge Protective Device Selection Guide

Littelfuse has developed an interactive selection guide to help you determine the right size SPD device to protect your PV installation.

Check It Out Here