Product Type: Fuse Holders

MEGA® SN Series

The Littelfuse MEGA® SN Series 70V Bolt-Down Sealed Water-Resistant Fuse Holder is an ideal solution for high-current, in-line, main, or branch circuit protection in harsh or hazardous environments. AssureLatch™ sealed positive latching technology is used to ensure a water-resistant and ignition-protected fuse holder design. A waterproof fuse compartment inside the fuse holder assembly protects against fuse corrosion.

The base features an M6 mounting hole and an M6 mounting slot for secure attachment, and it boasts a footprint that matches similar fuse holders, which makes switching from an unsealed to a sealed fuse holder simple. A built-in tether between the fuse holder base and cover keeps the components together during servicing.

The MEGA® SN Series sealed fuse holder is available with and without preloaded MEGA® high-current bolt-down fuses.

Features & Benefits

  • AssureLatch™ positive latching technology helps ensure a water-resistant and ignition-protected fuse holder
  • Sealed, waterproof fuse compartment protects against fuse corrosion and allows you to use dielectric spray on cable terminals without compromising the fuse connections
  • With an IP66/P69K rating, the fuse holder forms a dust-tight enclosure that protects against water ingress from high-pressure, high-temperature water jets
  • Ignition protected to SAE J1171 and ISO 8846 for installation in a battery box or on vehicles carrying hazardous loads
  • Stainless steel M8 hardware and tin-plated copper busbars offer long-term corrosion protection
  • Shape-shut clips secure the cover in place
  • Built-in tether keeps the cover connected to the base during servicing

Applications

  • High-Amperage, In-Line, Main or Branch Circuit Protection in Harsh or Hazardous Environments

Click here for a datasheet.

MEGA® 298 Bolt-Down Series

The Littelfuse MEGA® 298 Bolt-Down Series High-Current Fuse Holder works with MEGA® bolt-down fuses. As a high-amp fuse holder, it’s ideal for battery and alternator connections as well as providing ultrahigh-current protection for other types of heavy gauge cables. Interlocking pins on the sides let you connect additional MEGA® 298 Bolt-Down Series fuse holders for multi-fuse applications.

The MEGA® 298 Bolt-Down Series fuse holder is offered in a wide variety of configurations. Base style options include one with M6 mounting holes and one with extended M6 mounting slots measuring 15mm long. Additionally, there are configurations available with and without fuses. The UL 94-rated cover included with each fuse holder features six available locations for openings (actual openings vary by part number).

Features & Benefits

  • Compatible with MEGA® bolt-down fuses (sold separately unless indicated)
  • Glass-filled thermoplastic body houses M8 or M6 input and output terminals
  • Interlocking pins on the sides of the fuse holder let you connect additional MEGA® 298 Bolt-Down Series fuse holders to create a multi-fuse block
  • Base styles available with M6 mounting holes or extended M6 x 15mm slots
  • Included UL 94-rated protective cover has 6 available locations for openings to accommodate various cable entry needs (actual openings vary by part number)
  • Configurations may also include a thermoplastic tether, insulators, ratchet fasteners, and/or mounting hardware (see part numbers for details)

Applications

  • Battery and Alternator Connections
  • High-Current Circuit Protection
  • Body Builders
  • Medium-Duty Vehicles

Click here for a datasheet.

Click here for a brochure on fuse holders.

MIDI® 498 Series

Thanks to interlocking pins on its sides, the MIDI® 498 Series 58V Bolt-Down High-Current Fuse Holder can be used as a single automotive fuse holder or combined with additional fuse holders to create a multifuse block. Compatible with MIDI® bolt-down fuses up to 200 amps, the high-amp fuse holder comes with a protective thermoplastic cover that can be tethered to the base.

The MIDI® 498 Series fuse holder is offered in a wide variety of configurations. Base style options include one with mounting tabs and one without. Plus, the protective thermoplastic cover is available with openings in different locations to accommodate cables from different directions (openings vary by part number).

Features & Benefits

  • 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 multifuse block
  • Base style options include one with mounting tabs and M6 holes for outboard mounting and one without mounting tabs featuring M3 holes for inboard mounting
  • Included UL 94-rated protective cover has 6 available locations for openings to accommodate various cable entry needs (actual openings vary by part number)

Applications

  • High-Current Circuit Protection

Click here for a datasheet.

JCASE® FHJ Series – In-Line Cartridge

Easily install a JCASE® or Low-Profile JCASE® cartridge fuse {sold separately) using the JCASE® FHJ Series In-Line Cartridge Fuse Holder, which comes with either 10 AWG or 8 AWG wire leads.

Available for JCASE® or Low-Profile JCASE® fuses (sold separately) from 20 amps up to 40 amps or up to 60 amps, the JCASE® FHJ Series fuse holder comes configured with or without an integrated mounting bracket. Models designed for the JCASE® fuse also come with or without a cover, which offers added protection in harsh environments.

All standard versions of the JCASE® FHJ Series fuse holder come with tin-plated copper alloy contacts for reliable fuse installation.

Custom and semicustom orders of the JCASE® FHJ Series fuse holder can be produced (minimum order requirements apply). Contact your Littelfuse sales representative for details.

Features & Benefits

  • Available for JCASE® and Low-Profile JCASE® cartridge fuses with ratings from 20 amps to 40 amps or up to 60 amps depending on the configuration (sold separately)
  • Configurations with a built-in bracket make mounting simple
  • Versions with a cover offer protection in harsh environments
  • Black TPV housing with a UL 94 V-0 flammability rating
  • 10 AWG or 8 AWG wire leads for easy in-line fuse holder installation
  • Tin-plated copper alloy contacts help ensure reliable connections

Applications

  • Accessory Circuits
  • Overflow Circuits

Click here for a datasheet.

ATO® FLR Series – PCB

The ATO® FLR Series 80 V Printed Circuit Board (PCB) Fuse Holder accepts ATO® blade-style fuses and is designed with leaf spring connectors. The fuse holder housing is made from black thermoplastic with a UL 94 -0 flammability rating for heat and fire resistance. On the bottom center of the fuse holder, you will find a locking feature, which helps secure the housing to a PCB prior to soldering.

The ATO® FLR Series PCB fuse holder is available with either one-pin, tin-plated copper alloy soldering terminals or four-pin, silver-plated copper alloy soldering terminals.

Features & Benefits

  • Compatible with ATO® blade-style fuses (sold separately)
  • Copper alloy terminals for through-hole soldering
  • Available with 1-pin, tin-plated terminals (11 A continuous current, 15 A max) or 4-pin, silverplated terminals (22.5 A continuous current, 30 A max)
  • Black, heat-resistant thermoplastic fuse holder body with a UL 94 V-0 flammability rating
  • Leaf spring connector system
  • Locking feature secures the fuse holder to the PCB prior to soldering

Applications

  • Automotive PCB Fusing

Click here for a datasheet.

ATO® AFH Series

The ATO® AFH Series 32V In-Line Wire-Leaded Panel-Mount Fuse Holder can be used for either in-line installation or panel-mounting applications thanks to the 8″ looped lead wire and the snap-fit gripping arms.

Designed with a 14 AWG black lead wire, the ATO® AFH Series fuse holder is compatible with ATO® blade-style fuses (sold separately) up to 20 amps. The interlocking, heat-stabilized nylon fuse holder body allows you to snap multiple fuse holders together.

Features & Benefits

  • Accepts ATO® blade-style fuses (sold separately) up to 20 amps
  • Interlocking fuse holder body lets you connect multiple fuse holders
  • Heat-stabilized black nylon body has a UL 94-2 flammability rating
  • 8″looped 14 AWG black lead wire allows simple in-line installation
  • Gripping arms enable optional panel mounting

Applications

  • Heavy-Duty Automotive Fusing

Click here for a datasheet.

ATO® FHAC Series

Quickly add circuit protection for accessory lighting, panel displays, air conditioners, and blower motors using the ATO® FHAC Series 32V Waterproof In-Line Fuse Holder. This blade fuse holder features a built-in protective cover to provide an IP67-rated waterproof and dust-tight enclosure. The standard configurations are compatible with ATO® blade fuses from 1A to 20A, while the heavy-duty configurations accept ATO® blade fuses up to 25A or 30A, depending on the model.

Features & Benefits

  • Accepts ATO® blade fuses (sold separately unless indicated) from 1A to 20A (standard-duty) or up to 25A or 30A (heavy-duty), depending on the model
  • Built-in cover protects the installed fuse from dust and water to IP67 standards
  • Heat-resistant thermoplastic fuse holder body with a UL 94-0 flammability rating
  • Wire leads come in various sizes and colors for simple in-line installation
  • Tin-plated copper alloy contacts for corrosion resistance

Applications

  • Accessory Lighting (Standard-Duty)
  • Panel Displays/Electronics (Standard-Duty)
  • Air Conditioners/Blower Motors (Heavy-Duty)

Click here for a datasheet.

ATO® FHA Series

The ATO® FHA Series 32V In-Line Blade Fuse Holder enables versatile automotive fusing thanks to wire leads that ensure simple in-line installation. The standard version is compatible with ATO® blade fuses up to 20 amps, while the heavy-duty version accepts ATO® blade fuses up to 30 amps. A heat-resistant body and tin-plated copper alloy contacts provide durability for use in automotive environments.

Smart Glow versions of the ATO® FHA Series blade fuse holder feature a natural-colored PVC housing so you can see when an installed Smart Glow fuse is blown. The Smart Glow versions also feature UL 1015 wire leads.

Features & Benefits

  • Accepts ATO® blade fuses (sold separately unless indicated) up to 20 amps (standard) or up to 30 amps (heavy-duty)
  • Heat-resistant thermoplastic fuse holder body
  • Two GXL wire leads (standard and heavy-duty), green GPT leads, or UL 1015 wire leads (Smart Glow) enable simple in-line fuse installation
  • Tin-plated copper alloy contacts for corrosion resistance

Applications

  • Accessory Lighting (Standard-Duty)
  • Panel Displays/Electronics (Standard-Duty)
  • Air Conditioners/Blower Motors (Heavy-Duty)

Click here for a datasheet.

MINI® FHM Series

When you need additional or remote circuit protection, the MINI® FHM Series 32V In-Line Waterproof Blade Fuse Holder makes it easy by mounting virtually anywhere along the circuit. Plus, its integrated cover helps create an IP67-rated dustproof and waterproof enclosure that makes the fuse holder ideal for both automotive and marine applications.

The MINI® FHM Series blade fuse holder is available in a wide variety of configurations with various lead wire sizes, insulation colors, wire types, and special features, such as clear bodies that accommodate MINI® Smart Glow fuses. It can also be purchased with or without retail packaging.

In addition, Littelfuse actively produces custom and semicustom versions of the MINI® FHM Series fuse holder (minimum order requirements apply). Contact your Littelfuse sales representative for details.

Features & Benefits

  • Compatible with 32V MINI® blade fuses (sold separately unless indicated)
  • Built-in cover seals the fuse in to offer IP67-rated dustproof and waterproof protection
  • Compact design is easy to mount in line with the circuit virtually anywhere
  • Available in a wide variety of configurations, including standard black bodies and covers or clear bodies and covers that allow you to see MINI® Smart Glow fuses
  • Custom and semicustom MINI® FHM Series fuse holder versions are available through your Littelfuse sales representative (minimum order quantities apply)

Applications

  • Automotive or Marine Remote Circuit Protection
  • Accessory or Overflow Circuits
  • Small Electric Motors

Click here for a datasheet.

Littelfuse – Commercial Vehicle Products

Littelfuse offers an extensive product line to help protect, control, and distribute vehicle electrical power in OEM and aftermarket applications for industries such as heavy-duty trucks, construction, and agriculture. Littelfuse offers a broad and reliable selection of fuses, fuse blocks, power distribution modules, high-current switches, relays, and solenoids to fit your requirements. For decades, Littelfuse has helped OEMs, engineers, and end-users select the right product for their applications. Today, Littelfuse offers the broadest range of products for protection, sensing, and control needs while providing the exceptional service and support that our customers expect.