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  • Products
    • Automotive Sensors

        Automotive Sensors

        Littelfuse Automotive Sensor Products offer a wide range of sensors for use in monitoring various vehicular functions in the areas of passenger safety, comfort and convenience plus vehicle powertain, chassis and emission applications.
      • Chassis
      • Comfort and Convenience
      • Emissions
      • Passenger Safety
      • Powertrain
      • xEV Sensors
    • Battery Management

        Battery Management

        Littelfuse battery management devices provide methods of conserving battery power, protecting against over-discharge, combining and protecting auxiliary equipment such as liftgate motors.
      • Battery Combiners
      • Battery Isolators
      • Electrical Battery Disconnect Switches
      • FlexMod Electronic Modules
      • Low Voltage Disconnects
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    • Battery mini-Breakers (Thermal Cutoff Devices)

        Battery mini-Breakers (Thermal Cutoff Devices)

        Littelfuse battery mini-Breakers provide battery cell protection for high-capacity Lithium Polymer and prismatic cells.
      • Metal Hybrid Protection
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    • Custom-Engineered Electrical Equipment

        Custom-Engineered Electrical Equipment

        Designing and Building Custom-Engineered Modules for Electrical Distribution, Protection and Control.
      • Arc-Resistant Load Break/Disconnect Switches
      • Arc-Resistant Switchgear
      • Custom Built Switchgear MCC
      • Dewatering Substations
      • Integrated Variable-Frequency Drives
      • Littelfuse Startco Soft Starters
      • Metal-Clad and Metal-Enclosed Switchgear
      • Mine-Duty Medium-Voltage Junction Box
      • Mining Machine Controls
      • Neutral-Grounding Resistors
      • Outdoor Portable Substations (Skid and Trailor Mounted)
      • Power Factor Correction Systems/Capacitor Banks
      • Power Monitoring and Control
      • Power Takeoff Panels (PTO)
      • Reconditioning and Upgrade Services
      • Switch Houses
      • Trailer or Skid-Mounted Gen Set
      • Underground Portable Power Centres
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    • DC Vehicle Connectors

        DC Vehicle Connectors

        Electrical sockets, plugs and coils used for connection of a truck and trailer on commercial vehicles or caravans for 12 and 24V systems.
      • 13-Pole Sockets and Plugs
      • 15-Pole Sockets and Plugs
      • 15-Pole Spiral Coils
      • 2-Pole - 3-Pole Sockets and Plugs
      • 7-Pole Sockets and Plugs
      • 7-Pole Spiral Coils
      • ABS - EBS Sockets and Plugs
      • ABS - EBS Spiral Coils
      • Connector Accessories
      • Greycon Connectors
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    • DC Power Distribution Modules

        DC Power Distribution Modules

        Feature multiple electrical power outputs, acceptance of many fuses, fuse types & relays.
      • Auto & Commercial Vehicle Fuse Holders
      • Configurable PDM
      • Fuse Only PDM
      • Hard Wired PDM
      • Power Distribution Accessories
      • POWR-BLOK Modular Power Distribution
      • Unsealed PDM
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    • DC Solenoids and Relays

        DC Solenoids and Relays

      • Bi-Stable Latching Relays
      • Can Controllers and Plug In Relays
      • Plug In Relays
      • Solid State Relays
      • Speciality Relays
      • Standard High Current Relays
      • Time Delay and High Power Relays
      • High Voltage DC Contactor Relays
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    • EMC Components

        EMC Components

        Common Mode Noise Filters (CMF) attenuate common mode noise in differential and balanced transmission, and power supply and audio lines.
      • Common Mode Noise Filters
      • Common Mode Filters with ESD Protection
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    • Fuse Blocks, Fuse Holders and Fuse Accessories

        Fuse Blocks Fuse Holders and Fuse Accessories

        Littelfuse offers a comprehensive line of fuse blocks, fuse holders, and fuse accessories for automotive, electronic, and electrical markets.
      • Auto & Commercial Vehicle Fuse Holders
      • Bodies, Caps, Covers and Terminals
      • Box Cover Units
      • Dead Front Fuse Holders
      • Electrical Power Distribution Blocks
      • Fuse Blocks
      • Fuse Clips
      • Fuse Modules
      • Fuse Pullers
      • Fuse Reducers
      • Fuseholders
      • Inline Watertight Fuse Holders
      • POWR-GARD Fuse Blocks
      • Specialty Items
      • Telcom Disconnect Switches
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    • Fuses

        Fuses

        Littelfuse manufactures the broadest and most innovative selection of fuses.
      • Automotive Aftermarket Products
      • Automotive Passenger Car
      • Axial Radial Thru Hole Fuses
      • Cartridge Fuses
      • Hazardous Area Type Fuses
      • Industrial Power and UL Fuses
      • Medium Voltage Fuses
      • Military High Reliability Fuses
      • Specialty Power Fuses
      • Surface Mount Fuses
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    • Fusible Switches and Panels

        Fusible Switches and Panels

        Provide a complete, one-piece solution for easy procurement and code compliance.
      • LCP Series
      • LPS Series
      • XPress-Ship™ Program
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    • Gas Discharge Tubes

        Gas Discharge Tubes

        Dissipate high voltage transients through a contained plasma gas with high surge capability, low capacitance and small size.
      • High Voltage GDT
      • Low to Medium Surge GDT
      • Medium to High Surge GDT
      • Squared GDT
      • Very High Surge GDT
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    • Inductors

        Inductors

        Range of power inductors utilizing thin film photolithography technology metal alloy composite with low loss and high current capability for power supply circuits.
      • Power Inductors
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    • Integrated Circuits
    • Magnetic Sensors and Reed Switches

        Magnetic Sensors and Reed Switches

        Magnetic sensing products utilizing Reed and Hall Effect technologies, with custom solutions available.
      • Custom Sensors
      • Hall Effect Sensors
      • Magnetic Actuators
      • Reed Relays
      • Reed Sensors
      • Reed Switches
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    • New Products
    • Other Products and Accessories

        Other Products and Accessories

      • Accessories
      • BusBars and Terminal Blocks
      • Circuit Breakers
      • Connectors
      • Knobs and Nuts
      • Pilots, Lamps and Alarms
      • Power Distribution
      • Tracto-Trailer and Auto-RV Connectors
      • Wiring Accessories
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    • Polymer ESD Suppressors

        Polymer ESD Suppressors

        Low capacitance polymer base product for protecting high speed data circuit from ESD damage and maintaining data integrity.
      • PESD Protection Devices
      • PULSE-GUARD® ESD Suppressors
      • XTREME-GUARD™ ESD Suppressors
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    • PolyZen Devices

        PolyZen Devices

        Polymer-enhanced, precision Zener diodes that offer resettable protection against multi-Watt fault events without the need for multi-Watt heat sinks.
      • Miniature PolyZen Devices
      • Standard PolyZen Devices
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    • Power Semiconductors

        Power Semiconductors

        High reliability power semiconductors utilize the latest technology.
      • IXYS Power Semiconductors
        and ICs
      • Silicon Carbide
      • Ignition IGBTs
      • Discrete Thyristors
      • Thyristor Modules
      • Discrete MOSFETs
      • Discrete IGBTs
      • IGBT Modules
      • Discrete Diodes
      • Diode Modules
      • Bare Die
    • Protection Relays and Controls

        Protection Relays and Controls

        A full range of Protection Relays and Controls for the harshest environments.
      • Accessories
      • Alternating Relays
      • Arc Flash Detection
      • Covers and Mounting Adapters
      • Feeder Protection
      • Ground Fault Relays
      • Flashers and Tower Lighting Controls
      • Industrial Products
      • Intrinsically Safe Relays
      • Motor and Pump Protection
      • Pump Controls and Liquid Level Controls
      • Relay Current Transformers
      • Relay Software
      • Resistance Grounding
      • Retrofit Kits
      • Single Function Relays
      • Time Delay Relays
      • Trailing Cable Protection
      • Voltage Monitoring Relays
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    • PolySwitch Resettable PTC Fuses

        PolySwitch Resettable PTC Fuses

        Resettable Overcurrent Protection devices with various options: Surface Mount, Radial Leaded, Strap and Low Resistance.
      • Battery Strap
      • Bladed Devices
      • Line Voltage Rated Devices
      • Low Resistance
      • Radial Leaded
      • Surface Mount
      • TD and Chip
      • Telecom
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    • Semiconductors

        Semiconductors

        Power Semiconductors

      • IXYS Power Semiconductors and ICs
      • Silicon Carbide
      • Ignition IGBTs
      • Discrete Thyristors
        • View All

        LED Protectors

      • PLED
      • PLED 5 QFN
      • PLED 5HT SOT 89
      • PLED6M
        • View All

        SIDACtor® Protection Thyristors

      • Baseband Voice DS1 Protection
      • Broadband Optimized Protection
      • High Exposure Surge Protection
      • Line Circuit Access Switch LCAS Protection
        • View All

        TVS Diode Arrays

      • Automotive Qualified
      • General Purpose ESD Protection
      • Lightning Surge Protection
      • Low Capacitance ESD Protection
      • Ultra Low Capacitance

        • TVS Diodes

      • Automotive and High Reliability TVS
      • Leaded
      • Surface Mount
        • View All
    • Shock-Block™ GFCI

        Shock-Block™ GFCI

        Shock protection for people and equipment working in dangerous environments.
      • Industrial Shock-Block GFCI
      • Shock-Block GFCI Rental Products
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    • Surge Protection Modules and Devices

        Surge Protection Modules and Devices

        Our Surge Protection Devices (SPDs) And Modules Are Designed To Provide Protection From Transient Overvoltage. They Are Thermally-Protected And Built With High-Quality, Dependable Materials.

      • LED Lighting Surge Protection Modules
      • Type 2 Surge Protection Devices - SPD2 Series
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    • Switches

        Switches

        Features manually-operated, foot-operated, and mechanically-operated switches; and switches operated by temperature or pressure.
      • Ignition Switches
      • Manual Battery Disconnect Switches
      • Momentary Switches
      • Electrical Battery Disconnect Switches
      • Push-Pull Switches
      • Rocker Switches
      • Rotary Switches and Headlamp Switches
      • Plunger Switches
      • Special Purpose Switches
      • Toggle Switches
      • Windshield Wiper Switches
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    • Temperature Sensors

        Temperature Sensors

        Innovative temperature sensing solutions
      • Digital Temperature Indicators
      • Leaded RTDs
      • Leaded Thermistors
      • Power Thermistors
      • RTD Probes and Assemblies
      • Surface Mount Thermistors
      • Thermistor Probes and Assemblies
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    • Varistors

        Varistors

        Reliable standard and thermal protected varistor, available in a variety of forms, surge current capability up to 70,000 Amp.
      • 2Pro Devices
      • Industrial High Energy
      • Multi-layer
      • Radial Leaded
      • Specialty
      • Surface Mount
      • Thermally Protected
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  • Industries
    • Automotive
    • Automotive and Commercial Vehicle Aftermarket
    • Automotive Passenger Car
    • Battery Energy Storage Systems
    • Commercial Vehicle
    • Consumer Electronics
    • Electrical Contractor
    • Electrical Maintenance and Repair
    • EV Charging
    • Food and Beverage
    • HVAC/R
    • Industrial
    • LED Lighting
    • Marine
    • Medical
    • Military Electronic Parts
    • Mining
    • Oil, Gas and Petroleum
    • Power Generation
    • Solar
    • Telecom
    • Water Wastewater
    • White Goods
  • Services
    • Custom Circuit Protection Solutions
    • MROplus Industrial Fuse Consolidation
    • Testing Services
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    • View All...

        Datasheets & Downloads

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    • Ceramic, Polymer, and Fuse
    • Commercial Vehicle
    • Magnetic Sensors and Reed Switches
    • POWR-GARD
    • Relays and Controls
    • Semiconductors
    • Silicon Carbide
    • Temperature Sensors
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