Littelfuse LA15QS80-4 - The Littelfuse LA15QS series semiconductor fuses were designed for the specific protection of diodes and other semiconductor devices rated 150VAC/DC. The LA15QS product lines compact design is perfect for those applications that have limitations on available space.
Littelfuse

LA15QS80-4

Alternate Item Number: LA15QS804

UPC: 079458155914


Documents & Media
Brochure

Contact for Pricing

Overview

The Littelfuse LA15QS80-4 semiconductor fuse is a high-performance protection solution engineered for diodes and other sensitive semiconductor devices operating at 150VAC/DC. Part of the renowned LA15QS series, this fuse combines compact design with robust reliability, making it an ideal choice for space-constrained applications where precision protection is non-negotiable. Whether deployed in power supplies, motor controls, or high-frequency switching circuits, the LA15QS80-4 ensures consistent performance under demanding conditions while safeguarding critical components from overcurrent events. Semiconductor fuses like the LA15QS80-4 are specifically designed to address the unique protection needs of modern electronics, where even brief overcurrent conditions can lead to catastrophic failure. Unlike standard fuses, semiconductor fuses offer ultra-fast response times, low let-through energy (I²t), and precise clearing characteristics to prevent thermal runaway in sensitive devices such as diodes, thyristors, and IGBTs. The LA15QS series is trusted across industries for its ability to interrupt fault currents efficiently while maintaining minimal voltage drop, ensuring that protected circuits operate within safe parameters. The compact form factor of the LA15QS80-4 makes it particularly well-suited for applications where board space is at a premium, such as in compact power supplies, industrial automation systems, renewable energy inverters, and electric vehicle charging stations. Its design adheres to stringent industry standards, including UL and IEC certifications, providing assurance of compliance and safety. Professionals in power electronics, motor drives, and renewable energy sectors rely on Littelfuse’s semiconductor fuses for their proven durability, high interrupting rating, and consistent performance in both AC and DC applications. Installation and integration of the LA15QS80-4 are straightforward, with options for direct mounting or use in fuse holders, depending on the system requirements. Littelfuse provides comprehensive technical documentation, including time-current curves and application notes, to assist engineers in selecting the optimal fuse rating for their specific use case. The fuse’s high breaking capacity (typically 100kA) ensures reliable operation even in high-fault scenarios, while its low power dissipation minimizes heat generation, contributing to overall system efficiency. Littelfuse, a global leader in circuit protection solutions, has built a reputation for innovation and reliability in the industrial and electronics markets. The LA15QS series, including the LA15QS80-4, reflects the company’s commitment to delivering products that meet the evolving demands of modern power electronics. By choosing Littelfuse semiconductor fuses, engineers and system designers gain access to a trusted solution that enhances the safety, longevity, and performance of their critical applications. Whether protecting a high-power inverter, a motor control system, or a sensitive semiconductor device, the LA15QS80-4 delivers the precision and reliability required in today’s high-performance environments.
  • Designed for 150VAC/DC semiconductor protection (diodes, thyristors, IGBTs)
  • Ultra-fast response time with low I²t for precise fault clearing
  • Compact design ideal for space-constrained industrial applications
  • High interrupting rating (100kA) for reliable operation in fault conditions
  • UL and IEC certified for global compliance and safety

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Series
LA15QS
Size
Compact
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
Voltage Rating
150VAC/DC
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.