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  • Littelfuse Circuit Protection Sensors and Power Control
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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 powertrain, 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
      • 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
      • 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
        • 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
      • 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
      • DC Solenoids and Relays

          DC Solenoids and Relays

        • Bi-Stable Latching Relays
        • CAN Controllers and Plug In Relays
        • Plug In Relays
        • Solid State Relays
        • Specialty Relays
        • Standard High Current Relays
        • Time Delay and High Power Relays
        • High Voltage DC Contactors Relays
      • 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
      • 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
      • 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
        • Plug Fuse Adapters
        • POWR-GARD Fuse Blocks
        • Specialty Items
        • Telcom Disconnect Switches
        • POWR BLOK Modular Power Distribution
      • 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
      • 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
      • 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
      • 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
      • 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
        • Speciality Items
        • Terminals and Contacts
        • Tracto-Trailer and Auto-RV Connectors
        • Wiring Accessories
      • 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
      • 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
      • 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
        • High Power
        • Stacks, Subsystems, and Assemblies
        • 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
      • 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
      • 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
      • 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
      • 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
      • 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
      • 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
    • Industries
      • Automotive
      • Automotive Aftermarket
      • Automotive and Commercial Vehicle Aftermarket
      • Automotive Passenger Car
      • Battery Energy Storage Systems
      • Building Automation
      • Commercial Vehicle
      • Communications Infrastructure
      • Consumer Electronics
      • Data Center Solutions
      • 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
      • Renewable Energy
      • Solar
      • Water Wastewater
      • White Goods
    • Services
      • Custom Circuit Protection Solutions
      • MROplus Industrial Fuse Consolidation
      • Electronic Testing Services
    • Technical Resources
      • Application Designs
      • Consumer and Personal Computing
      • Industrial
      • Li-ion Battery
      • Lighting
      • Medical Devices
      • Power Supply
      • Solar
      • Telecom
      • White Goods
      • Datasheets & Downloads
      • 3D Models
      • Application Guides
      • CAD Drawings
      • Certification
      • Datasheets
      • Engineering Drawings
      • ICP Test Report
      • Product Catalogs
      • Product Manuals
      • View All...

          Datasheets & Downloads

        • 2D Prints
        • 3D Models
        • Application Guides
        • Application Notes
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        • Brochures
        • CAD Drawings
        • Certification
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        • Multimedia
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        • Product Catalogs
        • Product Literature
        • Product Manuals
        • Product Presentations
        • Product Specifications
        • RoHS Declaration
        • RT Tables
        • Simplified Circuit Diagrams
        • Software
        • SPICE Models
        • Supplier Quality
        • Technical Articles
        • Technical Papers
        • Time Current Curve
        • Training
        • Tutorials and Demos
        • White Papers
      • Online Tools
      • Arc-Flash Calculator
      • Competitor Cross Reference
      • Demos and Tutorials
      • eCatalogs
      • IBU Relay Selection Guide
      • iDesign Electronics Product Selector
      • Littelfuse Mobile Apps
      • Speed2Design
      • Videos
      • Technical Centers
      • 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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    • Home
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    Services

    Littelfuse utilizes a dedicated staff of experts to help you overcome your circuit protection challenges. By partnering with you from design to development, we will deliver many solutions to meet your needs.

    Services

    Littelfuse utilizes a dedicated staff of experts to help you overcome your circuit protection challenges. By partnering with you from design to development, we will deliver many solutions to meet your needs.

    Services

    Littelfuse utilizes a dedicated staff of experts to help you overcome your circuit protection challenges. By partnering with you from design to development, we will deliver many solutions to meet your needs.

    Services

    Littelfuse utilizes a dedicated staff of experts to help you overcome your circuit protection challenges. By partnering with you from design to development, we will deliver many solutions to meet your needs.

    • Put our product and application expertise to work for you: the Littelfuse engineering team is continuously working with ...Read More

      Custom Circuit Protection Solutions
    • MROplus

      MROplus? industrial fuse consolidation and selection optimizes your fuse inventory for improved safety and lowers your o...Read More

      MROplus - Industrial Fuse Consolidation Program
    • Our services include overcurrent, overvoltage, ESD and high-speed datacom and telecom testing, material analysis and spe...Read More

      Electronic Testing Services

    Littelfuse Capabilities Brochure

    • Littelfuse corporate capabilities brochure 

      Download the corporate capabilities brochure.

      View PDF

    MROplus Information

    • Excel MROplus Request Form
    • Littelfuse MRO Plus Fuse Consolidation MROplus Brochure
    • Littelfuse MRO Plus Fuse Consolidation MROplus One-Page Flyer

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    Littelfuse, Inc. 8755 West Higgins Road Suite 500, Chicago, IL, 60631 USA, 773-628-1000 Copyright ? 2021 Littelfuse, Inc. 蘇ICP備08009410號-2

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