Tractor-Trailers

A semi-truck with a black tractor and white trailer

We Deliver Electronics for Tractor-Trailers

When tractor-trailers and tanker trucks work, so does the economy. Littelfuse keeps the literal wheels of commerce turning by making overcurrent and overvoltage protection devices optimized for use in diesel or electric vehicles. We also make dc connectors, sockets, and plugs, as well as electronics for sensors, cameras, LED screens, and Wi-Fi that enable advanced driver assistance systems (ADAS).

Tractor-Trailers Related Products

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ATO

Product SeriesUCB

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Product SeriesFLEC

Features

  • High component density maximizes available space and limits the number of additional units required
  • Can be configured to hold fuses, circuit breakers, and relays, including MINI®, ATO®, MAXI®, JCASE®, MCASE®, and ISO components
  • Thermoplastic base and cover with a UL 94 V-0 flammability rating for mounting in harsh vehicle environments
  • Sealed PDM design with an IP67 rating ensures protection against dust, water, and contaminants
  • Input stud caps prevent accidental short circuits while performing maintenance to and around the power distribution box
  • Internal PCB allows for custom circuit configurations, including designs requiring electronics such as those used in CAN J1939 and LIN systems
  • Vented base ensures pressure equalization

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Ignition Switches

Product Series95060

Features

  • Engineering thermoplastic construction
  • Fully sealed contact area using O-rings and ultrasonic welding
  • Integrated Sealed Deutsch Connector Interface
  • Anti-restart and spring return options available
  • Tested to SAE J259 for ignition switches
  • Supplied with two matching keys, with or without boot
  • Custom logo can be molded on the boot
  • Multiple key codes or keyed alike available
  • Key is removable only at the ‘Off’ position

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Manual Battery Disconnect Switches

Product Series75920

Features

  • High amperage continuous current capacity of 400A with a single 4/0 cable at 12V dc, 300A at 24V dc, or 200A at 36V dc
  • IPX8-rated waterproof battery disconnect switch for external mounting on vehicles as well as installation on boats and marine equipment
  • Can be used in high-side or low-side applications
  • Black or gray thermoplastic housing with a UL 94 V-0 rating
  • Tested per SAE J1455 for salt, calcium chloride, and magnesium chloride, delivering a rust- and corrosion-free high-amp battery disconnect
  • Large red, yellow, or black knob makes the master battery disconnect switch easy to operate while wearing gloves
  • Built-in lock-out/tag-out (LOTO) satisfies OSHA requirements for an energy isolation device
  • Large divider on the base prevents accidental shorting of high energy cables

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In-line Fuse Holders

Product SeriesATO-MINI-Sealed-Fuse-Holders

Features

  • Tinned Copper wire provides increased corrosion resistance without losing desired performance
  • Rated IP67 with sealed cover for moisture & dust resistance
  • Includes two 8"" Red GXL wire leads for easy in-line installation

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In-line Fuse Holders

Product SeriesMINI - FHM

Features

  • Compatible with 32V MINI® and 58V MINI® blade fuses (sold separately unless indicated)
  • Built-in cover seals in the fuse to offer IP67-rated dustproof and waterproof protection
  • Compact design is easy to mount in line with the circuit virtually anywhere
  • Available in several configurations, including standard black bodies with black covers and clear bodies with clear covers for indicating fuses
  • Custom and semi-custom versions are available through your Littelfuse sales representative (minimum order quantities apply)

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Bolt-Down Single Fuse Holders

Product SeriesMIDI - 498

Features

  • Compatible with MIDI® bolt-down fuses rated up to 200 amps (fuse sold separately)
  • Glass-filled thermoplastic body withstands harsh underhood conditions
  • M5 threaded studs and washers for simple fuse installation
  • Interlocking pins on the sides of the fuse holder let you connect additional MIDI® 498 Series fuse holders to create a multi-fuse block
  • Versions include one with mounting tabs and M6 holes for outboard mounting and one without mounting tabs featuring M3 holes for inboard mounting
  • UL 94 HB-rated cover can be positioned six different ways to accommodate various cable entry needs (number of openings vary by part)

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Bolt-Down Single Fuse Holders

Product SeriesMEGA-Flex

Features

  • Compatible with MEGA® high-current bolt-down fuses up to 500 amps (sold separately unless indicated)
  • Black or red cover allows cable entry at six different locations, simplifying installation and accommodating large wires and ring terminal stack up
  • Dovetail feature allows users to connect multiple MEGA Flex Series fuse holders to create a fused high-power distribution block
  • Slots molded into the base enable secure tie-wrap mounting
  • Bolt-down fuse holder base features an M6 mounting hole and an M6 slot measuring 6mm long
  • Options for stainless steel or zinc-plated steel M8 studs and hardware help ensure long-term corrosion resistance
  • Flexible cover has a UL 94 V-0 flammability rating

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Automotive Fuse Blocks

Product SeriesST ATO®

Features

  • Snap-on insulating cover (included) with label recesses & spare fuse holder
  • Screw termination
  • Integrated negative busbar
  • Includes sheet of circuit identification labels

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  • Centralizes wiring to a convenient location
  • Insulating cover provides circuitry protection
  • Continuous current rating of 100A

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Product SeriesMDB

Features

  • Internally bussed for high-current power distribution
  • Accepts two or three MIDI® fuses (sold separately), depending on the configuration
  • Sealed box has IPX7 and IPX9K ratings to ensure a waterproof enclosure that can be mounted in exposed locations or near the battery
  • AssureLatch™ yellow positive-sealing latches keep the cover securely in place while allowing for fast service
  • Cover features a built-in spot for keeping a spare fuse, which allows simple replacement
  • Outside of the cover has a spot for a fuse label to identify the protected circuits
  • Included tether connects the cover to the base to prevent loss during service
  • Optional cable seals are available for various wire sizes
  • M5 thread studs are included for fuse installation

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Product SeriesLX

Features

  • Multi-fuse holder protects up to 4 high-amperage and 6 low-amperage circuits (30-200A MIDI® fuses and 1-40A ATO® fuses)
  • Compact 6.5" x 5" x 2" 10-way fuse box eliminates battery-box clutter, saves space, and reduces overall system costs
  • AssureLatch™ technology seals unit to an IP59K rating, protecting fuses against road splash and high-pressure, high-temperature wash fluid
  • Model 880094 provides one fused input feeding the unit and other fuses, while model 880089 has an unfused input feeding the fuse circuits
  • Ignition protected to SAE J1171 and ISO 8846 for installation in a battery box or on vehicles carrying hazardous loads
  • Provides a collection point for negative returns
  • Tethered cover prevents loss during servicing
  • Storage is provided for an included ATO® fuse puller, spare fuses (sold separately), and attachment screws (not included)

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Bolt-Down Fuses - Automotive Aftermarket

Product SeriesMEGA

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Blade Fuses/Shunts - Automotive Aftermarket

Product SeriesATO

Features

  • Fast-acting
  • Available with ampere ratings of 1 A to 40 A
  • Operate at up to 125 ○C
  • Interrupting ratings of 1 kA at 32 V dc
  • PA66 housings with UL flammability ratings of V-2
  • Tin-plated zinc alloy terminals
  • Net weight 1.4 g 5 % per fuse
  • Comply with SAE J1284 and ISO 8820-3 and CSA Certified (File No. 29862)
  • UL Listed (File AU 1410)
  • Certified lead-free and RoHS compliant

Benefits

  • Color-coding indicates ampere rating
  • See-through housings make it easier to see when fuses blow
  • High-contrast ampere rating stamps aid identification
  • Depending on use, ATO fuses can replace fuses with the same ratings from the ATOF® series and ATO Silver series


Littelfuse Product & Part Number


Blade Fuses/Shunts - Automotive Aftermarket

Product SeriesMINI

Features

  • Fast-acting
  • Available with ampere ratings of 2 A to 30 A
  • Interrupting ratings of 1 kA at 32 V dc
  • Operate at up to 125 °C
  • Tin-plated zinc alloy terminals
  • PA66 housing with UL flammability ratings of V-2
  • Net weight 0.57 g ±5 % per fuse
  • Comply with SAE J2077 and ISO 8820-3
  • UL Listed
  • Certified lead-free and RoHS compliant

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  • Color coding indicates ampere rating
  • See-through housings make it easier to see when fuses blow
  • High-contrast ampere rating stamps on housings aid identification

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Product SeriesHWB60_AL

Features

  • Holds 30 MINI® fuses or a combination of MINI® fuses, MINI® circuit breakers, MCASE™ fuses (adapter required; sold separately), and ISO 280 relays
  • Maximum total continuous current rating of 250 A
  • Elimination of internal bussing allows the user to customize the circuitry with direct wire-to-component connections
  • IP67/IP69K or IP68/IP69K sealed waterproof power distribution block stands up to road splash and can be installed nearly anywhere on the vehicle
  • AssureLatch™ positive-sealing latches keep the cover securely in place while allowing for fast service
  • Terminal position assurance (TPA) locks help prevent disconnection of wires due to vibration and accidental snagging
  • Dovetail features enables expansion with multiple HWB60 or HWB60-AL units or other compatible interlocking PDMs and fuse holders
  • Available with high-temperature Gore vent that allows pressure to be released to maintain IP ratings at higher temperatures
  • Thermoplastic base and cover with a UL 94 V-0 flammability rating

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Bi-Stable Latching Relays

Product SeriesHD Series

Features

  • Supports high-current continuous loads up to 300 A and intermittent loads up to 1500 A for 10 seconds
  • Available with a 12 VDC coil or 24 VDC coil
  • Low power consumption: Magnetically latched or electronically controlled bistable operation draws no current in the on or off position
  • Remote operation eliminates long runs of heavy cable, minimizing cable complexity, cost, and vehicle weight
  • Sealed to an IP67/IP69K rating for protection against dust, debris, and water ingress
  • Silver alloy contacts assure the lowest voltage drop/resistance and extend cycling life

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Tractor-Trailers Resources

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