Littelfuse LA15QS200-4 - 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

LA15QS200-4

Alternate Item Number: LA15QS2004

UPC: 079458156010

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Overview

The Littelfuse LA15QS200-4 semiconductor fuse is a high-performance protection solution engineered for diodes and sensitive semiconductor devices operating at 150VAC/DC. Designed to meet the rigorous demands of modern industrial and electronic systems, this fuse combines compact form factor with robust protection capabilities, ensuring reliable operation in space-constrained environments without sacrificing performance. The LA15QS series is part of Littelfuse's industry-leading portfolio of semiconductor protection devices, trusted by engineers worldwide for critical applications where failure is not an option. **Key Features and Benefits:** - **Precision Voltage Rating:** Rated at 150VAC/DC, the LA15QS200-4 provides optimal protection for semiconductor devices operating within this voltage range, preventing catastrophic failures caused by overcurrent or short circuits. - **Compact Design:** With a space-efficient footprint, this fuse is ideal for applications where board real estate is limited, such as in power supplies, motor drives, and industrial control systems. Its reduced size does not compromise its ability to handle high fault currents effectively. - **Fast-Acting Response:** Semiconductor fuses like the LA15QS200-4 are designed to react rapidly to fault conditions, minimizing the risk of damage to sensitive components. This fast response time is critical in protecting high-value semiconductor devices from thermal runaway or breakdown. - **High Interrupting Rating:** Engineered to safely interrupt high fault currents, the LA15QS200-4 ensures system safety and reliability, even in demanding industrial environments where electrical stress is common. - **Wide Application Compatibility:** Suitable for a broad range of applications, including power conversion systems, renewable energy inverters, industrial automation, and electronic test equipment. Its versatility makes it a go-to choice for engineers designing next-generation systems. **Typical Applications:** The Littelfuse LA15QS200-4 semiconductor fuse is widely deployed in applications where semiconductor protection is paramount. In power supply units, it safeguards rectifier diodes and thyristors from overcurrent events, ensuring stable and efficient power delivery. Industrial control systems benefit from its ability to protect sensitive control electronics in motor drives, PLCs, and variable frequency drives (VFDs). Renewable energy systems, such as solar inverters and wind power converters, rely on the LA15QS200-4 to protect power semiconductor devices from transient overcurrents and short circuits. Additionally, the fuse is commonly used in test and measurement equipment, where precision and reliability are critical. **Industry Trust and Manufacturer Reputation:** Littelfuse is a global leader in circuit protection, with over a century of innovation and expertise in safeguarding electrical and electronic systems. The company's semiconductor fuses, including the LA15QS series, are renowned for their reliability, precision, and adherence to stringent industry standards. Engineers and procurement professionals consistently choose Littelfuse for its commitment to quality, extensive testing, and comprehensive technical support. The LA15QS200-4 is no exception, offering a proven solution for protecting high-value semiconductor assets in mission-critical applications. **Selection and Installation Considerations:** When selecting a semiconductor fuse like the LA15QS200-4, engineers must consider several factors to ensure optimal performance. The voltage rating must match the system's operating conditions, while the interrupting rating should exceed the maximum prospective fault current. The fuse's physical dimensions and mounting options should align with the application's space constraints and installation requirements. Proper sizing is essential to avoid nuisance tripping or inadequate protection. Installation should follow manufacturer guidelines, including correct orientation, adequate clearance, and secure connections to minimize resistance and heat buildup. **Why Choose the Littelfuse LA15QS200-4?** For engineers and system designers seeking a reliable, high-performance semiconductor fuse, the Littelfuse LA15QS200-4 delivers unmatched protection in a compact package. Its combination of fast response, high interrupting rating, and space-saving design makes it an ideal choice for modern industrial and electronic systems. Backed by Littelfuse's reputation for quality and innovation, the LA15QS200-4 provides peace of mind, ensuring that sensitive semiconductor devices operate safely and efficiently in even the most demanding environments.
  • 150VAC/DC rated for semiconductor device protection
  • Compact design ideal for space-constrained applications
  • Fast-acting response to prevent semiconductor damage
  • High interrupting rating for system safety
  • Widely used in power supplies, motor drives, and renewable energy systems

Specifications

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