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Littelfuse LA15QS2-2 - 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 LA15QS2-2 The Littelfuse LA15QS series semiconductor fuses were designed for the specific…

Alternate Item Number: LA15QS22

UPC: 079458155686


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Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Littelfuse LA15QS2-2 semiconductor fuse is a high-performance, space-saving solution engineered for the precise protection of diodes and other sensitive semiconductor devices operating at 150VAC/DC. Designed to meet the rigorous demands of modern electronic systems, this compact fuse combines reliability, efficiency, and robust construction to ensure long-term operational safety. The LA15QS2-2 is part of Littelfuse’s esteemed LA15QS series, a trusted line of semiconductor fuses renowned for their dependable overcurrent protection in critical applications where space constraints and performance are equally prioritized. Semiconductor fuses like the LA15QS2-2 are essential components in power electronics, renewable energy systems, industrial motor drives, and high-frequency switching circuits. Their primary function is to safeguard semiconductor devices—such as diodes, thyristors, and IGBTs—from destructive fault currents that could lead to catastrophic failure. Unlike conventional fuses, semiconductor fuses are engineered with ultra-fast response times and precise interrupting ratings to prevent thermal runaway and ensure system integrity. The LA15QS2-2’s compact design makes it particularly well-suited for applications where board real estate is limited, such as in compact inverters, motor controllers, and power supplies. Key features of the Littelfuse LA15QS2-2 include: - **High-speed interruption**: Rapid response to fault conditions to protect sensitive semiconductor components from damage. - **Compact footprint**: Optimized for tight spaces without sacrificing performance or reliability. - **150VAC/DC rating**: Ideal for medium-voltage applications, including industrial automation, renewable energy, and power conversion systems. - **Robust construction**: Engineered for durability in harsh operating environments, ensuring consistent performance over extended periods. - **Compliance and reliability**: Designed to meet stringent industry standards, providing peace of mind in mission-critical applications. Industries that rely on the Littelfuse LA15QS2-2 include renewable energy (solar inverters, wind power systems), industrial automation (motor drives, PLCs), electric vehicle charging infrastructure, and telecommunications power supplies. Professionals in these fields choose Littelfuse for its legacy of innovation and quality, backed by decades of expertise in circuit protection solutions. When selecting a semiconductor fuse, engineers must consider factors such as voltage rating, interrupting capacity, response time, and physical dimensions. The LA15QS2-2 excels in all these areas, making it a preferred choice for applications where reliability and space efficiency are non-negotiable. Installation of the LA15QS2-2 is straightforward, typically involving direct mounting on printed circuit boards (PCBs) or within fuse holders designed for semiconductor protection. Littelfuse provides comprehensive technical documentation, including datasheets and application notes, to assist engineers in proper sizing, placement, and integration. The fuse’s small form factor also simplifies thermal management, reducing the need for additional cooling solutions in compact designs. Littelfuse, a global leader in circuit protection, has built its reputation on delivering high-quality, innovative solutions that address the evolving needs of modern electronics. With a focus on research and development, Littelfuse continuously refines its semiconductor fuse offerings to meet the challenges of higher power densities, faster switching speeds, and increasingly stringent safety requirements. The LA15QS2-2 is a testament to this commitment, providing engineers with a reliable, space-efficient solution for protecting critical semiconductor devices in a wide range of applications. For professionals seeking a trusted fuse that balances performance, durability, and compact design, the Littelfuse LA15QS2-2 stands as an industry benchmark.
  • 150VAC/DC rated for medium-voltage semiconductor protection
  • Ultra-fast response time for critical fault interruption
  • Compact design ideal for space-constrained applications
  • Robust construction for long-term reliability in harsh environments
  • Trusted by industries like renewable energy, industrial automation, and EV charging

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Mounting Type
PCB or fuse holder
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 Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

30323R

Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip
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 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

What types of fuses does Littelfuse offer for industrial applications?

Littelfuse offers UL Class fuses, high-speed fuses, medium voltage fuses, 10 x 38 mm fuses, and solar fuses for industrial applications.

What are high-speed fuses used for?

High-speed fuses protect critical power semiconductor devices against short circuits in power conversion applications like inverters and variable-speed drives.

What applications are medium voltage fuses designed for?

Medium voltage fuses protect transformers, potential transformers, feeders, and motor circuits, with designs available for various current, voltage, and mounting configurations.

What are the voltage and amperage ranges for 10 x 38 mm fuses?

10 x 38 mm fuses are available with ratings from 125 to 1000 volts and 1/10 to 30 amperes.

What is the maximum DC voltage for Littelfuse solar fuses?

Littelfuse offers solar fuses and holders up to 1500 Vdc for photovoltaic applications.

What conditions do Littelfuse feeder protection relays guard against?

Feeder protection relays protect circuits from overcurrent, ground faults, phase loss, overload, and other detrimental conditions.

What is the Industrial Shock-Block® GFCI designed for?

The Industrial Shock-Block® GFCI is designed for people protection in industrial facilities and meets UL Standard 943C Class C and Class D.

What do Littelfuse voltage monitors protect against?

Voltage monitors provide protection against both supply line and load side faults when the motor is running.

What functions can Littelfuse timers and flashers control?

Timers and flashers can delay starting and stopping loads, and control cycling and sequencing of motors, pumps, compressors, heaters, and lighting.

How do Littelfuse arc-flash protection relays work?

Arc-flash relays detect a developing arc-flash incident and send a trip signal to interrupt power before significant damage occurs.

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.