Littelfuse LA70QS25-22F - 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

LA70QS25-22F

Alternate Item Number: LA70QS2522F

UPC: 079458152562


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Overview

The Littelfuse LA70QS25-22F represents a significant advancement in semiconductor protection, extending the robust capabilities of the LA70QS series. Engineered for demanding industrial and commercial environments, this French cylindrical style fuse offers unparalleled reliability and performance. Its solid-fill design is a critical feature, providing enhanced durability and ensuring consistent protection for sensitive electronic components against overcurrent and short-circuit events. Adhering to globally recognized standards, the 22 x 58mm dimensions of the LA70QS25-22F make it a versatile choice for a wide array of equipment designs. This international acceptance simplifies integration into systems intended for worldwide deployment, reducing design complexity and ensuring compatibility across different regions. The fuse's high interrupting ratings are paramount for safeguarding critical infrastructure and high-power systems where fault currents can be substantial. This capability ensures that the fuse will safely clear fault conditions, preventing catastrophic damage to downstream equipment and minimizing downtime. A key differentiator for the LA70QS25-22F is the availability of an optional striker mechanism. This feature offers crucial blown fuse indication, which can be either visual for immediate on-site identification or remote, allowing for integration into supervisory control and data acquisition (SCADA) systems or alarm panels. This proactive indication is invaluable for maintenance planning, troubleshooting, and ensuring the continuous operational integrity of the protected system. Typical applications for the Littelfuse LA70QS25-22F include: * **Power Supplies:** Protecting sensitive power conversion circuitry in industrial automation, telecommunications, and data centers. * **Inverters and Converters:** Safeguarding the complex semiconductor devices within solar inverters, variable frequency drives (VFDs), and DC-DC converters. * **Motor Control:** Providing reliable protection for motor drives and control systems where high inrush currents are common. * **Renewable Energy Systems:** Ensuring the safety and reliability of equipment in solar farms and wind turbine power conversion systems. * **Industrial Machinery:** Protecting control cabinets and critical components in manufacturing and processing equipment. Littelfuse is a globally recognized leader in circuit protection, known for its commitment to quality, innovation, and reliability. Choosing the LA70QS25-22F means investing in a product from a manufacturer with a proven track record of delivering high-performance solutions that meet stringent industry requirements. The 14 x 51mm and 22 x 58mm sizes are accepted worldwide, further underscoring Littelfuse's dedication to global standards and customer needs. For applications requiring robust, reliable, and internationally compliant semiconductor protection, the Littelfuse LA70QS25-22F is an exceptional choice.
  • French cylindrical style semiconductor fuse
  • Solid-fill design for enhanced reliability
  • High interrupting ratings for robust protection
  • International 22 x 58mm size, accepted worldwide
  • Optional striker for visual or remote blown fuse indication

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Current Rating
25 A
Material
Solid-fill
Series
LA70QS
Size
22 x 58 mm
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.