Littelfuse LA070URD32LI0630 - VERY FAST-ACTI SEMICOND FUSE 32LI0630. Littelfuse North American style square body high-speed 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 SCRs, diodes, thyristors, GTOs, and IGBT devices, Littelfuse square body fuses have pure die-cut elements embedded in solidified sand to control arcing and lower I2t. 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 I2t 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

LA070URD32LI0630

UPC: 079458154023

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Overview

The Littelfuse LA070URD32LI0630, SKU LA070URD32LI0630, represents a pinnacle of protection technology for sensitive semiconductor devices within demanding industrial applications. As a very fast-acting semiconductor fuse, this Littelfuse offering is engineered to provide critical, high-speed overcurrent protection for power electronic components such as SCRs (Silicon Controlled Rectifiers), diodes, thyristors, GTOs (Gate Turn-Off Thyristors), and IGBTs (Insulated Gate Bipolar Transistors). These components are the backbone of modern power conversion systems, and their vulnerability to transient surges and fault currents necessitates robust and rapid protection. Littelfuse North American style square body high-speed fuses, including the LA070URD32LI0630, are designed with equipment designers in mind, offering maximum flexibility. The robust square body construction not only provides a durable housing but also facilitates various mounting styles, allowing for seamless integration into diverse equipment designs. This adaptability is crucial in the fast-paced world of industrial automation and power electronics, where custom solutions and compact designs are often required. The broad range of ampere ratings available within a given body size further enhances this design flexibility, enabling engineers to select the precise protection level needed without compromising on physical space or system architecture. The core of the LA070URD32LI0630's protective capability lies in its meticulously engineered internal construction. It features pure die-cut elements that are precisely embedded within solidified sand. This specialized construction is not merely for structural integrity; it plays a vital role in controlling the arcing phenomenon that occurs during a fault event. By effectively managing the arc, the fuse significantly lowers the I²t (current squared times time) value. A lower I²t is paramount because it directly correlates to the amount of thermal energy dissipated, thereby minimizing damage to the protected semiconductor devices. This reduction in damage is critical for extending the lifespan and ensuring the reliability of expensive power components. Furthermore, the LA070URD32LI0630 is equipped with a blown fuse trip indicator. This feature provides a clear, visual indication that the fuse has operated, simplifying troubleshooting and maintenance procedures. Prompt identification of a blown fuse allows for quicker replacement, reducing downtime and ensuring that the protected equipment can be restored to operational status with minimal delay. This is an invaluable feature in mission-critical industrial environments where continuous operation is essential. The superior cycling ability of this Littelfuse fuse is another significant advantage, particularly for applications subjected to high cyclic loading. This means the fuse can withstand repeated on-off cycles and transient current fluctuations without degradation, ensuring long and reliable service life. The extremely fast-acting and current-limiting nature of the LA070URD32LI0630 provides an enhanced level of protection to the equipment, safeguarding it from potentially catastrophic overcurrent events. Key applications for the Littelfuse LA070URD32LI0630 include: * **Rectifier and Inverter Protection:** Essential for AC-DC and DC-AC power conversion systems. * **DC Drives:** Safeguarding variable speed drives used in motor control. * **UPS Systems (Uninterruptible Power Supplies):** Ensuring continuous power availability and protecting critical components. * **Reduced Voltage Motor Starters:** Protecting motor control circuits during startup. * **General Power Conversion Equipment:** Providing protection across a wide spectrum of globally accepted industrial applications. By choosing the Littelfuse LA070URD32LI0630, engineers and maintenance professionals are investing in a proven solution for safeguarding their valuable power electronic assets, ensuring operational continuity, and maintaining the integrity of their industrial systems.
  • Very fast-acting semiconductor fuse for superior protection of SCRs, diodes, thyristors, GTOs, and IGBTs.
  • North American style square body design offers maximum flexibility in equipment design and mounting options.
  • Pure die-cut elements embedded in solidified sand for controlled arcing and minimized I2t, reducing component damage.
  • Equipped with a blown fuse trip indicator for easy troubleshooting and reduced downtime.
  • Superior cycling ability ensures long, reliable life under high cyclic loading conditions.

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Material
Pure die-cut elements embedded in solidified sand
Mounting Type
Multiple mounting styles
Series
LA070URD
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
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.