Overview

Littelfuse is a global manufacturer of circuit protection, power control, and sensing technologies, offering one of the most expansive product portfolios in electrical safety and system protection. Their solutions span industrial, automotive, data center, and energy markets—helping customers safeguard people, equipment, and operations from electrical faults, overloads, and surges.

From fuses and relays to surge protection devices and power semiconductors, Littelfuse is a trusted name for reliability, innovation, and protection in critical power applications.

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Product Offerings

  • Fuses and Fuse Holders (Class CC, J, RK, Midget, etc.)
  • Surge Protection Devices (SPD) and TVS Diodes
  • Relays and Contactors
  • Power Distribution Blocks
  • Sensors (Proximity, Temperature, Speed, Fluid Level)
  • Heaters and Thermal Protection Devices
  • Power Semiconductors (SCRs, Diodes, IGBTs, Thyristors)
  • Ground Fault Detection and Arc Flash Relays

Resources

Industries & Applications

Littelfuse products are essential in:

  • Industrial Automation and Control Panels
  • Commercial and Institutional Electrical Infrastructure
  • EV and Transportation Systems
  • Data Centers and Telecom Facilities
  • Solar and Renewable Energy Installations
  • OEM Equipment and Machine Building

Key Advantages

  • Industry-Leading Circuit Protection and Safety Technology
  • UL, CSA, IEC, and CE Certified Products
  • Wide Selection for AC/DC, Low and High Voltage Applications
  • Comprehensive Support for Panel Builders and OEMs
  • Extensive Engineering Resources and Application Guides