Littelfuse KLKD005H - 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

KLKD005H

Alternate Item Number: KLKD005.H

UPC: 079458964561


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Overview

The **Littelfuse KLKD005H** is a high-performance, fast-acting fuse engineered for demanding DC applications where rapid fault interruption is critical. Designed as part of Littelfuse’s KLKD series, this **Midget-style fuse (10 x 38 mm)** delivers exceptional reliability in circuits with **DC fault currents up to 50,000 amperes**, making it an ideal choice for solar energy systems, industrial power distribution, and renewable energy infrastructure. With a **high DC voltage rating** and compliance with both **UL and IEC photovoltaic fuse standards**, the KLKD005H ensures compliance with stringent safety and performance requirements in modern electrical installations. **Key Features and Benefits:** The KLKD005H fuse is optimized for **fast-acting protection**, minimizing downtime and reducing the risk of catastrophic damage in high-fault environments. Its **Midget-style design (10 x 38 mm)** allows for compact integration into solar combiner boxes, switchgear, and other space-constrained applications. Available in both **standard and board-mount configurations**, this fuse offers flexibility for diverse installation needs, whether in rack-mounted systems or custom enclosures. **Applications and Industry Use Cases:** The KLKD005H is widely deployed in **solar photovoltaic (PV) systems**, where it protects string inverters, combiner boxes, and DC disconnect switches from overcurrent conditions. Its **high DC voltage rating** makes it suitable for grid-tied and off-grid solar installations, ensuring long-term performance even in harsh environmental conditions. Beyond solar, this fuse is also used in **industrial power distribution**, battery energy storage systems (BESS), and electric vehicle (EV) charging infrastructure, where reliable DC fault protection is essential. **Why Choose Littelfuse KLKD Series?** Littelfuse is a globally recognized leader in circuit protection, with decades of expertise in designing fuses for renewable energy and industrial applications. The **KLKD series** is specifically engineered to meet the unique demands of **photovoltaic systems**, offering **UL 2579 and IEC 60269-6 compliance** for enhanced safety and performance. Professionals in the solar and industrial sectors trust Littelfuse for its **consistent quality, rapid response times, and comprehensive technical support**, ensuring seamless integration and long-term reliability. **Installation and Selection Considerations:** When selecting the KLKD005H, engineers and installers should consider the **ampere rating** required for their specific application, as Littelfuse offers a **wide range of current ratings** to match diverse system requirements. Proper sizing ensures optimal protection while preventing nuisance tripping. Installation is straightforward, with options for **panel mounting, DIN rail mounting, or direct board attachment**, depending on the configuration chosen. For solar applications, compliance with **NEC (National Electrical Code) Article 690** and local regulations is critical, and the KLKD005H’s adherence to **UL and IEC standards** simplifies code compliance. **Industry Trust and Long-Term Performance:** The KLKD005H is backed by Littelfuse’s **rigorous testing and quality assurance processes**, ensuring consistent performance across varying environmental conditions. Its **fast-acting response** reduces the risk of arc flash and equipment damage, while its **high fault current rating** provides peace of mind in high-energy circuits. Whether deployed in a **utility-scale solar farm, a commercial microgrid, or an industrial automation system**, the KLKD005H delivers the reliability and protection that modern electrical infrastructure demands. For professionals seeking a **high-performance, code-compliant fuse** for DC applications, the **Littelfuse KLKD005H** stands as a trusted solution, combining **speed, durability, and compliance** in a compact, Midget-style package.
  • Fast-acting DC fuse for high-fault applications up to 50,000 amperes
  • Midget-style (10 x 38 mm) design for compact installations
  • Available in standard and board-mount configurations
  • Compliant with UL 2579 and IEC 60269-6 photovoltaic standards
  • Wide range of ampere ratings for diverse solar and industrial applications

Specifications

Application
Power supplies
Brand Name
Littelfuse
Mounting Type
Standard and board-mount
Series
KLKD
Size
10 x 38 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.