Littelfuse L75QS080 - POWR-SPEED ROUND-BODY 750VDC 2ND GEN SEMICONDUCTOR FUSE
Littelfuse

L75QS080

UPC: 079458235760

Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 5

Multiplier: 5

*Contact for lower quantities*

Overview

The Littelfuse POWR-SPEED ROUND-BODY 750VDC 2nd Gen Semiconductor Fuse, SKU L75QS080, represents a critical component for safeguarding high-voltage semiconductor devices in demanding industrial environments. Engineered by Littelfuse, a globally recognized leader in circuit protection, this fuse is specifically designed to provide fast-acting, reliable overcurrent protection for sensitive power electronics. Its robust round-body construction ensures durability and efficient heat dissipation, crucial for maintaining operational integrity under continuous load and potential fault conditions. With a substantial 750VDC voltage rating, the L75QS080 is ideally suited for applications involving high-power DC circuits. This includes, but is not limited to, modern renewable energy systems such as solar inverters and wind turbine converters, where precise and rapid fault interruption is paramount to prevent catastrophic damage. Furthermore, its application extends to industrial automation, electric vehicle charging infrastructure, and advanced motor drives, all of which rely on the stable and protected operation of semiconductor power modules like IGBTs and MOSFETs. The 2nd generation design of this Littelfuse fuse signifies advancements in materials science and manufacturing processes, leading to enhanced performance characteristics. Users can expect improved reliability, lower I²t values for faster clearing of faults, and a more consistent protection profile over the fuse's operational lifespan. This translates directly into reduced downtime, lower maintenance costs, and increased safety for personnel and equipment. Key benefits and features of the Littelfuse POWR-SPEED ROUND-BODY 750VDC 2nd Gen Semiconductor Fuse (L75QS080) include: * **High Voltage Capability:** Rated for 750VDC, ensuring compatibility with a wide range of high-power DC systems. * **Fast-Acting Protection:** Designed to interrupt fault currents rapidly, minimizing damage to sensitive semiconductor components. * **Durable Round-Body Construction:** Offers excellent thermal management and mechanical robustness for industrial settings. * **2nd Generation Technology:** Incorporates the latest advancements for superior reliability and performance. * **Broad Application Spectrum:** Essential for solar, wind, industrial drives, EV charging, and other high-power DC applications. * **Littelfuse Quality Assurance:** Manufactured by a trusted industry leader with a reputation for excellence in circuit protection solutions. Selecting the correct semiconductor fuse is a critical step in system design. Factors such as continuous current rating, breaking capacity, voltage rating, and response time must be carefully considered to ensure optimal protection. The L75QS080, with its specific voltage and performance characteristics, is a prime example of a fuse engineered to meet these stringent requirements. Its integration into power conversion and control systems not only protects valuable assets but also contributes to the overall efficiency and longevity of the equipment. Professionals in electrical engineering and system integration will find the L75QS080 to be a dependable choice for their most demanding high-voltage DC protection needs, backed by the innovation and quality synonymous with the Littelfuse brand.
  • Littelfuse POWR-SPEED ROUND-BODY 750VDC 2nd Gen Semiconductor Fuse
  • SKU: L75QS080 for high-voltage DC circuit protection
  • Designed for fast-acting overcurrent interruption
  • Robust round-body construction for durability and thermal performance
  • Ideal for renewable energy, industrial automation, and power electronics

Specifications

Current Rating
80 A
Series
POWR-SPEED
Voltage Rating
750 VDC

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.