Circuit Protection, Fuses, Thyristors, Automotive Circuit Protection, Protection Relays and Controls

Products
- Battery Management
  - Battery Combiners
  - Battery Isolators
  - Liftgate Battery Protection
  - Low Voltage Disconnects
  - Timers
- Custom-Engineered Electrical Equipment
- DC Solenoids and Relays
  - Bi Stable Relays 200+ Amps
  - Bi-Stable Relays 100-200 Amps
  - Compact Relays and Microrelays
  - Normally Open Relays 100-200 Amps
  - Normally Open Relays 200+ Amps
  - Normally Open Relays <100 Amps
  - Plug In Relays
  - Solid State Relays
  - Specialty Relays
- Electrical Switch Panels
  - LCP Coordination Panel
  - LPMP Elevator Panel
  - LPS Shunt Trip Elevator Disconnect Switch
- Fuse Blocks Fuseholders and Fuse Accessories
- Fuses
- Gas Discharge Tubes
  - Gas Plasma Switches
  - GDT Holder
  - High Voltage GDT
  - Low to Medium Surge GDT
  - Medium to High Surge GDT
  - Squared GDT
  - Very High Surge GDT
- LED Protectors
- Misc Electrical Products and Accessories
- New Products
- Power Semiconductors
  - IGBT Module
- Protection Relays and Controls
  - Ground Fault Relays
  - Arc Flash Detection
  - Motor Protection
  - Resistance Grounding
  - Generator Controls and Protection
  - Engine Controllers
  - Alarm Monitoring
  - Engine Diagnostics
  - Trailing Cable Protection
  - Industrial Products
  - Single Function Relays
  - Feeder Protection
  - Retrofit Kits
  - Relay Software
  - Relay Current Transformers
  - Covers and Mounting Adapters
  - Accessories
- PulseGuard ESD Suppressors
  - Surface Mount
- Resettable PTCs
  - Battery Strap
  - Low Resistance
  - Radial Leaded
  - Resettable PTC resources
  - Surface Mount
  - Telecom
- Shock Block GFCI
  - Industrial Products
  - Rental Products
- SIDACtor Protection Thyristors
  - Baseband Voice DS1 Protection
  - Broadband Optimized Protection
  - High Exposure Surge Protection
  - Line Circuit Access Switch LCAS Protection
  - Subscriber Line interface Circuit SLIC Protection
- Switches
  - Battery Disconnect Switches
  - Ignition Switches
  - Momentary Switches
  - Push-Pull Switches
  - Rocker Switches
  - Rotary Switches and Headlamp Switches
  - Special Purpose Switches
  - Toggle Switches
  - Windshield Wiper Switches
- Switching Thyristors
  - SIDAC
  - TRIAC
  - SCR
  - DIAC
  - QUADRAC
  - Rectifier Diode
- TVS Diode Arrays
  - ESD Protection and EMI Filters
  - General Purpose ESD Protection
  - Lightning Surge Protection
  - Low Capacitance ESD Protection
- TVS Diodes
  - Automotive and High Reliability TVS
  - Leaded
  - Surface Mount
- Varistors
  - Industrial High Energy
  - Multilayer
  - Radial Leaded
  - Specialty
  - Surface Mount
  - Thermally Protected
Industries
Services
Technical Resources
Competitor Cross Reference
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NEW Electronics eCatalogs!

Latest standards, products, diagrams & videos in an interactive e-book.

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PICO^® 305 Series

Intrinsically safe fuse for hazardous locations, helping to safeguard human life in dangerous work zones.

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Industrial Shock-Block^TM Cart and Frame Offers Mobility!

Easy to install, flexible and provides a mobile solution in your facility.

Watch the video

NEW 1500Vdc Solar Protection

The SPXV Series adds 1500 Vdc protection to the POWR-GARD portfolio. Available in 6-30 Amp ratings, these fuses are in stock for the newest solar applications.

Learn More

Custom Screened and Sorted Hi-Rel TVS Diodes for Avionics

Faster delivery, higher reliability, and lower costs.

Learn More

Commercial Packs:
Family Assortment of Fuses

The most popular fuses designed to meet the needs of professionals.

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Q4 Earnings Conference Call

Wednesday, February 5, 10 a.m. CST Windows Media Player Required

Q4 Earnings Conference Call

Littelfuse Announces Acquisition of SymCom

Headquartered in Rapid City, South Dakota, SymCom provides overload relays and pump controllers primarily to the industrial market

Learn More

Littelfuse Website Upgrade Scheduled
for March 15

Select features of the website will be unavailable on Saturday, March 15.

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Speed2Design Winners Selected!

Ten lucky engineers have been selected to go behind the scenes
at NASA Johnson Space Center, Houston, Texas.

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NEW Electronics eCatalogs!

PICO^® 305 Series

Industrial Shock-Block^TM Cart and Frame Offers Mobility!

NEW 1500Vdc Solar Protection

Custom Screened and Sorted Hi-Rel TVS Diodes for Avionics