Littelfuse KLKD002H - The KLKD fuse series is fast-acting with a high DC voltage rating. This family of Midget style fuses (10 x 38 mm) is used in solar combiner boxes and in circuits with DC fault currents up to 50,000 amperes. KLKD fuses are available in standard and board-mount configurations. In addition, the KLKD series has been designed to meet both the UL and IEC photovoltaic fuse standards. Littelfuse offers a wide range of ampere ratings to match specific requirements in a variety of applications.
Littelfuse

KLKD002H

Alternate Item Number: KLKD002.H

UPC: 079458964516

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Overview

The Littelfuse KLKD002H is a high-performance, fast-acting DC fuse engineered to provide robust overcurrent protection in demanding industrial and renewable energy applications. Specifically designed for the rigorous environment of solar combiner boxes, this Midget-style fuse (10x38 mm) offers exceptional reliability and safety. Its impressive DC fault current rating of up to 50,000 amperes ensures that critical circuits are protected against severe short-circuit events, safeguarding valuable equipment and preventing system downtime. Engineered to meet stringent international standards, the KLKD series complies with both UL and IEC photovoltaic fuse requirements. This compliance is paramount for solar installations, guaranteeing that the fuse will perform as expected under fault conditions, contributing to the overall safety and longevity of solar power systems. The fast-acting nature of the KLKD002H means it interrupts fault currents rapidly, minimizing damage to downstream components and reducing the risk of arc flash incidents. Littelfuse, a globally recognized leader in circuit protection, has developed the KLKD series to address the unique challenges of high-power DC circuits. Available in a wide array of ampere ratings, these fuses allow for precise application matching, ensuring optimal protection without oversizing. Whether you require standard fuse configurations or specialized board-mount options for integrated designs, the KLKD series offers versatility to suit various installation needs. Key features and benefits of the Littelfuse KLKD002H include: * **High DC Fault Current Rating:** Withstands up to 50,000 amperes, providing superior protection against severe short circuits. * **Fast-Acting Performance:** Rapidly interrupts fault currents to minimize damage and enhance safety. * **UL and IEC Compliance:** Meets critical photovoltaic fuse standards for solar applications. * **Midget Style (10x38 mm):** Compact form factor suitable for space-constrained applications. * **Versatile Configurations:** Available in standard and board-mount options. * **Wide Ampere Range:** Littelfuse offers a comprehensive selection to match specific application requirements. This fuse is an essential component for solar inverter DC input, DC string protection, and other high-power DC distribution systems where reliable and efficient overcurrent protection is non-negotiable. By choosing the Littelfuse KLKD002H, engineers and system designers can be confident in the integrity and safety of their DC power infrastructure, ensuring consistent performance and protection against electrical hazards.
  • Fast-acting DC fuse for reliable overcurrent protection
  • High 50,000A DC fault current interruption rating
  • 10x38mm Midget style fuse for compact installations
  • Meets UL and IEC photovoltaic fuse standards
  • Available in standard and board-mount configurations

Specifications

Application
Power supplies
Brand Name
Littelfuse
Mounting Type
Standard and board-mount
Series
KLKD
Size
10x38 mm
Special Features
Fast Acting Fuses
Standard
UL Listed/CSA Certified
Sub Brand
KLKD Series
Type
10x38 Fuses

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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.