Littelfuse LA110URD72LI0700 - Littelfuse's North American style square body semiconductor fuses provide maximum flexibility in equipment design and ultimate protection for today's power conversion equipment. Available in different body sizes and multiple mounting styles, the broad range of ampere ratings allows great flexibility in equipment design. Engineered to provide state-of-the-art protection for SCR, diodes, thyristors, GTO, and IGBT devices, Littelfuse square body fuses have pure die-cut elements embedded in solidified sand to control arcing and lower l2t. All fuses are also equipped with a blown fuse trip indicator. Features: Choice of mounting styles provides a wide choice for equipment design. Broad range of ampere ratings in a given body size for design flexibility. Very low l2t minimizes damage to protected components. Superior cycling ability for long, reliable life on high cyclic loading. Extremely fast-acting and current limiting for improved protection to equipment. Applications: Protection of rectifiers, inverters, DC drives, UPS systems, reduced voltage motor starters, and other equipment in globally accepted applications.
Littelfuse

LA110URD72LI0700

Alternate Item Number: LA110URD72LI0700

UPC: 079458155235


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Overview

Littelfuse's LA110URD72LI0700 North American style square body semiconductor fuse delivers unmatched protection for critical power conversion equipment. Designed for high-performance applications, this 700A fuse combines advanced engineering with robust construction to safeguard sensitive semiconductor devices in rectifiers, inverters, DC drives, UPS systems, and reduced voltage motor starters. Engineered with pure die-cut elements embedded in high-purity silica sand, the LA110URD72LI0700 ensures controlled arcing and minimized I²t values, reducing stress on protected components during fault conditions. The solidified sand medium provides superior thermal stability and arc-quenching performance, making these fuses ideal for high cyclic loading environments where reliability is paramount. The LA series from Littelfuse represents the gold standard in semiconductor protection, offering multiple mounting styles to accommodate diverse equipment designs. Whether for industrial automation, renewable energy systems, or motor control applications, these fuses provide the flexibility engineers need without compromising on protection. Their fast-acting, current-limiting characteristics respond within microseconds to overcurrent events, preventing catastrophic failures in thyristors, SCRs, GTOs, diodes, and IGBTs. The integrated blown fuse trip indicator eliminates the need for external monitoring, enabling quick visual confirmation of fault conditions and reducing maintenance downtime. Industry professionals trust Littelfuse for semiconductor protection due to the company's decades of expertise in high-power electronics. The LA110URD72LI0700 is part of a comprehensive portfolio of fuses designed to meet global standards, ensuring compatibility with equipment deployed across North America, Europe, and Asia. Installation is straightforward with multiple mounting options including DIN rail, panel mount, and direct bolt-on configurations. For applications requiring compliance with UL, IEC, or other regional standards, Littelfuse provides certification documentation to simplify the approval process. Key advantages of the LA110URD72LI0700 include: - Exceptional cycling capability for long service life in high-duty-cycle applications - Ultra-low I²t values to minimize thermal stress on protected components - Superior arc suppression for enhanced safety in high-voltage environments - Broad ampere rating range within a single body size for design flexibility - Industry-leading manufacturer support and technical resources When protecting high-value power conversion equipment, the Littelfuse LA110URD72LI0700 semiconductor fuse offers the reliability and performance required for mission-critical applications. Its combination of advanced materials, precise engineering, and comprehensive monitoring features makes it an essential component in modern electrical protection strategies.
  • 700A current rating for high-power semiconductor protection
  • Pure die-cut elements in silica sand for controlled arcing and low I²t
  • Multiple mounting styles for design flexibility
  • Fast-acting current-limiting response for equipment safety
  • Blown fuse trip indicator for easy fault detection

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Current Rating
700 A
Material
Pure die-cut elements embedded in solidified sand
Mounting Type
DIN rail, panel mount, direct bolt-on
Series
LA
Size
Square body
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
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9F61 Size B Clips 1.6in

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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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.