Littelfuse L25S001 - Designed to protect today’s equipment and systems, Littelfuse semiconductor fuses are manufactured with Littelfuse-developed technology that sets tomorrow’s standards for accuracy, consistent quality, reliability, and predictable performance. By using advanced metallurgical, polymer, and materials research; mathematical modeling, and computerized statistical analysis; Littelfuse engineers have redefined “State-of-the-Art.”
Littelfuse

L25S001

Alternate Item Number: L25S001.T

UPC: 079458840018


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Overview

The Littelfuse L25S001 semiconductor fuse represents the pinnacle of protection for modern industrial and electronic systems, engineered to meet the rigorous demands of today’s high-performance applications. Designed with Littelfuse’s proprietary technology, this fuse sets new benchmarks for accuracy, consistent quality, and predictable performance, ensuring your critical components remain safeguarded under even the most challenging operating conditions. By leveraging advanced metallurgical research, cutting-edge polymer science, and rigorous materials analysis, Littelfuse engineers have redefined what it means to deliver state-of-the-art protection. This semiconductor fuse is meticulously crafted to address the unique challenges of sensitive electronic environments, where even minor overcurrent events can lead to catastrophic failures. Its robust construction and precision engineering make it an ideal choice for protecting power conversion systems, motor drives, inverters, and other high-value industrial equipment. The L25S001 is particularly well-suited for applications requiring rapid response times and high interrupting ratings, ensuring minimal downtime and maximum operational reliability. Key features of the Littelfuse L25S001 include: - **Advanced metallurgical design** for superior thermal and electrical performance, reducing the risk of nuisance tripping while maintaining fast response to fault conditions. - **High-quality polymer encapsulation** that enhances durability and provides excellent resistance to environmental stressors such as moisture, vibration, and thermal cycling. - **Predictable performance** backed by rigorous mathematical modeling and computerized statistical analysis, ensuring consistent behavior across varying load conditions. - **Wide application compatibility** suitable for semiconductor protection, industrial automation, renewable energy systems, and other high-reliability environments. - **Compliance with industry standards** for safety and performance, providing peace of mind in critical applications. Professionals in the industrial and electronics sectors rely on Littelfuse for its unparalleled expertise in fuse technology. With decades of innovation and a reputation for reliability, Littelfuse has become the trusted partner for engineers and system integrators who demand the highest levels of protection for their equipment. The L25S001 is no exception, offering a combination of precision engineering, robust materials, and rigorous testing that ensures long-term dependability. Whether you are designing a new system or upgrading an existing one, the Littelfuse L25S001 semiconductor fuse delivers the performance and reliability required to protect your most valuable assets. Its state-of-the-art design and consistent quality make it an essential component for any high-performance application, from industrial machinery to advanced electronics. Trust Littelfuse to provide the protection your systems deserve.
  • Advanced metallurgical design for superior thermal and electrical performance
  • High-quality polymer encapsulation for enhanced durability
  • Predictable performance with rigorous mathematical modeling
  • Wide application compatibility for industrial automation and power systems
  • Compliance with industry safety and performance standards

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Series
L25S
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
L25S Series
Type
Semiconductor Fuse
Package Weight (Imperial)
0.045 L
Package Weight (Metric)
0.020 kg
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.