Littelfuse LA30QS2000-128 - The Littelfuse LA30QS series Semiconductor protection fuses are intended for the protection of Power Semiconductors such as Diodes, Phase Control SCR and other Power Semiconductor devices. The LA30QS is recommended for new applications providing solutions for your critical protection needs at 300V and less semiconductors. Features: Low l2t minimizes damage to protected components on short circuit. Controlled arc voltage reduces stress to circuit components during fuse clearing. Choice of mounting types provides options for unique termination requirements. Indicator options allow identification of blown fuses. Superior DC capabilities. Applications: Protection of 300 volt heavy duty rectifiers and similar heavy duty power supplies.
Littelfuse

LA30QS2000-128

Alternate Item Number: LA30QS2000128

UPC: 079458161403


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Overview

The Littelfuse LA30QS2000-128 Semiconductor Protection Fuse is a critical component engineered for the robust protection of sensitive power semiconductor devices. Designed to safeguard diodes, phase control SCRs, and other high-power semiconductor elements operating at voltages of 300V and below, this fuse series represents a superior choice for new application designs demanding reliable and effective protection. At the core of the LA30QS series' performance is its exceptionally low I²t rating. This specification is paramount in minimizing the damaging effects of short circuits on protected components. By clearing faults rapidly and with minimal energy let-through, the LA30QS2000-128 significantly reduces the risk of catastrophic failure, thereby extending the operational lifespan of expensive power semiconductors. Furthermore, the controlled arc voltage generated during fuse clearing is a key design feature that mitigates electrical stress on other circuit components, contributing to overall system integrity and reliability. Flexibility in installation is a hallmark of the LA30QS series. Littelfuse offers a choice of mounting types, providing engineers with the adaptability needed to meet unique termination requirements and integrate seamlessly into diverse industrial equipment designs. This versatility ensures that the LA30QS2000-128 can be specified for a wide array of applications without compromising on electrical connection or mechanical stability. For enhanced operational visibility and maintenance efficiency, the LA30QS2000-128 is available with indicator options. These indicators provide a clear and immediate visual cue when the fuse has operated, simplifying troubleshooting and reducing downtime. This feature is invaluable in industrial environments where rapid fault identification is crucial for maintaining production continuity. With superior DC capabilities, the LA30QS2000-128 is particularly well-suited for demanding direct current applications. Its robust construction and performance characteristics make it an ideal solution for protecting heavy-duty rectifiers, high-power DC power supplies, and other critical power conversion systems. The Littelfuse brand is synonymous with quality and reliability in circuit protection, and the LA30QS series upholds this reputation by delivering dependable performance in challenging industrial settings. Key Features and Benefits: * **Advanced Semiconductor Protection:** Specifically designed for diodes, phase control SCRs, and other power semiconductor devices up to 300V. * **Minimized Damage:** Low I²t rating effectively limits energy let-through during short circuits, protecting sensitive components. * **Reduced Circuit Stress:** Controlled arc voltage minimizes electrical stress on surrounding circuit elements during fuse operation. * **Installation Versatility:** Multiple mounting options accommodate diverse termination needs and integration requirements. * **Fault Indication:** Optional indicators facilitate quick identification of blown fuses, streamlining maintenance. * **Superior DC Performance:** Engineered for reliable operation in demanding DC applications. Applications: * Protection of 300-volt heavy-duty rectifiers. * Safeguarding similar heavy-duty power supplies. * Industrial motor drives and control systems. * Power conversion equipment. * Renewable energy systems. * Uninterruptible Power Supplies (UPS).
  • Designed for protection of Power Semiconductors (Diodes, SCRs) up to 300V.
  • Low I²t minimizes damage to protected components during short circuits.
  • Controlled arc voltage reduces stress to circuit components during fuse clearing.
  • Choice of mounting types for unique termination requirements.
  • Indicator options for easy identification of blown fuses.

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Current Rating
2000 A
Material
Semiconductor Protection Fuse
Mounting Type
Multiple mounting types (choice of)
Series
LA30QS
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
Voltage Rating
300 V
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.