Littelfuse LA70QS80-22F - Littelfuse French Cylindrical style semiconductor fuses are an extension to the LA70QS series. They offer a solid-fill design with high interrupting ratings and an optional striker for visual or remote blown fuse indication. The international 14 x 51mm and 22 x 58mm sizes are accepted worldwide.
Littelfuse

LA70QS80-22F

Alternate Item Number: LA70QS8022F

UPC: 079458152616


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Overview

The **Littelfuse LA70QS80-22F French Cylindrical Semiconductor Fuse** is a high-performance protection solution engineered for demanding industrial and power electronics applications. As part of Littelfuse’s renowned **LA70QS series**, this fuse combines a **solid-fill design** with **high interrupting ratings**, ensuring robust overcurrent protection for sensitive semiconductor circuits. Designed to meet the rigorous demands of global markets, the LA70QS80-22F is compatible with international **14 x 51mm and 22 x 58mm** cylindrical fuse standards, making it a versatile choice for OEMs, panel builders, and maintenance teams operating across multiple regions. **Key Features and Benefits:** - **Solid-Fill Design for Enhanced Reliability:** The solid-fill construction minimizes internal arcing and ensures consistent performance under extreme fault conditions, reducing the risk of catastrophic failure in critical systems. This design is particularly valuable in applications where downtime is unacceptable, such as in renewable energy inverters, motor drives, and industrial power supplies. - **High Interrupting Ratings for Superior Protection:** With high interrupting ratings, the LA70QS80-22F can safely handle large fault currents, protecting semiconductor devices from damage during short circuits or overload events. This capability is essential in high-power applications like electric vehicle charging stations, grid-tied solar inverters, and industrial automation systems. - **Optional Striker Mechanism for Efficient Maintenance:** The integrated striker provides **visual or remote blown fuse indication**, enabling quick identification of faults without manual inspection. This feature streamlines maintenance workflows, reduces troubleshooting time, and enhances operational safety by preventing unnecessary equipment shutdowns. - **Global Compatibility with Standardized Sizes:** The LA70QS80-22F adheres to **international 14 x 51mm and 22 x 58mm** cylindrical fuse dimensions, ensuring seamless integration into existing systems worldwide. This standardization simplifies inventory management, reduces lead times, and supports multi-region deployments for OEMs and system integrators. - **Trusted Performance from a Leading Manufacturer:** Littelfuse is a globally recognized leader in circuit protection, with decades of expertise in designing fuses for semiconductor applications. The LA70QS series, including the LA70QS80-22F, is trusted by engineers in industries such as **renewable energy, industrial automation, medical devices, and transportation** for its reliability, precision, and adherence to stringent safety standards. **Typical Applications:** The LA70QS80-22F is ideal for protecting semiconductor devices in a wide range of high-performance applications, including: - **Power Electronics:** Inverters, converters, and rectifiers in renewable energy systems (solar, wind) and industrial motor drives. - **Industrial Automation:** Control panels, PLCs, and variable frequency drives (VFDs) where reliable overcurrent protection is critical. - **Transportation:** Traction inverters, battery management systems, and charging infrastructure for electric vehicles. - **Medical Equipment:** High-reliability power supplies for diagnostic and therapeutic devices. - **Telecommunications:** Power distribution units (PDUs) and rectifiers in data centers and network infrastructure. **Selection and Installation Considerations:** When selecting the LA70QS80-22F, engineers should evaluate the **interrupting rating** based on the prospective fault current of the system, ensuring it exceeds the maximum fault level. The optional striker should be considered for applications requiring remote monitoring or automated fault detection. Installation follows standard cylindrical fuse practices, with proper torque specifications and clearance requirements to maintain safety and performance. Littelfuse provides comprehensive datasheets and application notes to guide proper selection and installation. **Why Choose Littelfuse?** Littelfuse’s legacy of innovation in circuit protection spans over a century, with a reputation for engineering solutions that balance performance, safety, and reliability. The LA70QS80-22F exemplifies this commitment, offering a fusion of **high interrupt ratings, global compatibility, and maintenance-friendly features**—all backed by Littelfuse’s industry-leading technical support and compliance with international standards (e.g., IEC, UL). For professionals seeking a dependable, high-performance semiconductor fuse, the LA70QS80-22F delivers unmatched protection and peace of mind.
  • Solid-fill design for reliable semiconductor circuit protection
  • High interrupting ratings for superior fault current handling
  • Optional striker for visual or remote blown fuse indication
  • Compatible with international 14 x 51mm and 22 x 58mm cylindrical fuse sizes
  • Trusted by OEMs and engineers in renewable energy, industrial automation, and transportation

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
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.