Littelfuse L75QS800 - POWR-SPEED ROUND-BODY 750VDC 2ND GEN SEMICONDUCTOR FUSE
Littelfuse

L75QS800

UPC: 079458235920


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Overview

The Littelfuse L75QS800 POWR-SPEED ROUND-BODY 750VDC 2nd Generation Semiconductor Fuse is engineered to provide robust and reliable overcurrent protection for critical semiconductor components in demanding high-voltage industrial applications. Designed with precision and durability in mind, this fuse is an essential component for ensuring the safety and longevity of sophisticated power electronic systems. With a substantial voltage rating of 750 VDC, the L75QS800 is specifically tailored for environments where high DC voltages are prevalent. This includes a wide array of applications such as advanced power conversion systems, inverters for renewable energy sources like solar and wind farms, electric vehicle charging infrastructure, industrial motor drives, and uninterruptible power supplies (UPS). Its round-body construction facilitates easy integration into standard fuse holders and power distribution blocks, simplifying installation and maintenance procedures for electrical engineers and technicians. The 2nd Generation design of this Littelfuse semiconductor fuse represents an advancement in protection technology. It offers enhanced performance characteristics, including improved response times to fault conditions and greater reliability under continuous operational stress. This means that in the event of an overcurrent or short-circuit event, the fuse will interrupt the circuit quickly and decisively, thereby preventing catastrophic damage to sensitive and expensive semiconductor devices such as IGBTs, MOSFETs, and diodes. Protecting these components is paramount to maintaining system uptime and reducing costly repairs. Littelfuse is a globally recognized leader in circuit protection, and the L75QS800 embodies their commitment to quality and innovation. When selecting fuses for high-voltage semiconductor protection, engineers rely on manufacturers with a proven track record of delivering consistent performance and adhering to stringent industry standards. The L75QS800 is built to meet these expectations, offering peace of mind that your systems are protected by a fuse designed for excellence. Its robust construction ensures it can withstand the thermal and electrical stresses inherent in high-power applications, contributing to overall system stability and safety. Key benefits and features of the Littelfuse L75QS800 include: * **High Voltage Capability:** Rated for 750 VDC, suitable for demanding high-voltage DC circuits. * **Advanced 2nd Generation Design:** Offers improved reliability and faster response times for superior semiconductor protection. * **Robust Round-Body Construction:** Ensures durability and ease of installation in industrial power systems. * **Critical Component Protection:** Safeguards expensive semiconductor devices from overcurrent and short-circuit damage. * **Wide Application Range:** Ideal for power conversion, renewable energy, motor drives, and UPS systems. * **Trusted Manufacturer:** Backed by Littelfuse's reputation for quality and innovation in circuit protection. By choosing the Littelfuse L75QS800, industrial professionals are investing in a high-performance protection solution that upholds the integrity of their electrical systems, minimizes downtime, and ensures operational safety in the most challenging environments.
  • Littelfuse POWR-SPEED ROUND-BODY 750VDC 2nd Generation Semiconductor Fuse
  • Designed for high-voltage industrial applications requiring robust overcurrent protection
  • 750 VDC voltage rating ensures compatibility with demanding DC power systems
  • 2nd Generation design offers enhanced reliability and faster fault interruption
  • Protects critical semiconductor components like IGBTs, MOSFETs, and diodes from damage

Specifications

Series
POWR-SPEED 2nd Gen
Size
Round-Body
Voltage Rating
750 VDC
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 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
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.