Littelfuse PAL4100 - FUSE AUTO LINK 32V 9/16 BNT BOX 100A. PAL™ Fuses are available in current ratings up to 120 amperes, with either female or bolt-on terminals.
Littelfuse

PAL4100

Alternate Item Number: 0PAL4100X

UPC: 079458014037


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Overview

The Littelfuse PAL4100 is a 32V DC/AC, 100A auto link fuse designed for high-current circuit protection in automotive, heavy-duty, and OEM applications. Part of Littelfuse’s trusted PAL™ series, this fuse features a 9/16" bent male terminal (BNT BOX) configuration with bolt-on terminals, ensuring secure, vibration-resistant connections ideal for starter systems, auxiliary power feeds, and main power distribution. The 100A current rating and 32V rating make it suitable for high-power circuits where reliable overcurrent protection is critical. The PAL4100 is color-coded blue for easy identification and manufactured in the USA to meet stringent industry standards. Its construction withstands demanding operating temperatures and environmental stresses, providing long-lasting protection against fault currents. Compatible with Japanese and domestic vehicle systems, this fuse is a direct replacement for OEM applications requiring a 100A bolt-on terminal fuse. The PAL™ series is engineered for durability, offering up to 120A ratings with various terminal types (female, male, bent, or locking female) to suit diverse installation needs. For high-current protection in battery and alternator connections, the PAL4100 delivers dependable performance with a Slo-Blo® feature to minimize nuisance blowing during temporary overloads.
  • 32V AC/DC voltage rating, 100A current rating
  • 9/16" bent male terminal (BNT BOX) with bolt-on terminals
  • Color-coded blue for easy identification
  • Slo-Blo® feature reduces nuisance blowing during temporary overloads
  • Manufactured in the USA for high-quality, reliable performance

Specifications

Application
Automotive
Brand Name
Littelfuse
Connection Type
Bolt-on
Current Rating
100 A
Series
PAL
Size
9/16 BNT BOX
Standard
RoHS
Sub Brand
PAL Series
Voltage Rating
32 V
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MEG100

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PAL260

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MEG150

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PAL250

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0498050.H

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0498100.H

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0498060.M

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0498150.H

Space-saving MIDI® fuses protect high-current wiring harnesses. The bolt-down automotive fuses employ diffusion pill technology to provide time-delayed performance. Use MIDI Time Lag 32V fuses with ratings of 150 A to 200 A only for short circuit protection.
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PAL240

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Frequently Asked Questions

What technical support resources does Littelfuse offer?

Littelfuse provides a Techline with technical experts who can answer product questions, provide cross references, engineering drawings, and application assistance. They can be contacted at 1-800-TEC-FUSE or [email protected].

How can distributors access Littelfuse product information?

Distributors can access product information through the Littelfuse Business Center website, which offers product availability, pricing, order placement, order status, and technical resources.

How can distributors learn about Littelfuse products?

Littelfuse University offers in-depth training courses ranging from 3 to 20 minutes, covering products, programs, and tools at various skill levels. Courses can be accessed at LittelfuseUniversity.com.

What marketing support does Littelfuse provide to distributors?

Littelfuse offers a Marketing to Marketing program that includes co-branded email campaigns, content sharing, marketing tools, product launch support, and website linking. The program is free and aims to help distributors grow sales.

What digital marketing assets are available from Littelfuse?

Littelfuse provides a digital asset portal with online sales tools, product images, video files, sales presentations, webcast recordings, and product literature that can be downloaded.

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.