Littelfuse KLKD007H - 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

KLKD007H

Alternate Item Number: KLKD007.H

UPC: 079458964585


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Overview

The Littelfuse KLKD007H is a high-performance, fast-acting Midget-style fuse engineered for critical DC circuit protection. Designed to meet the rigorous demands of modern electrical systems, particularly in renewable energy applications, this fuse offers exceptional reliability and safety. Its 10x38mm form factor is a standard in many industrial and commercial installations, ensuring broad compatibility. Engineered with a high DC voltage rating, the KLKD series is specifically suited for applications where elevated DC potentials are present, such as in solar photovoltaic (PV) systems. These systems often involve string configurations that can generate significant DC voltages, making robust overcurrent protection paramount. The KLKD007H excels in these environments, providing rapid interruption of fault currents to prevent damage to sensitive equipment and ensure personnel safety. A standout feature of the KLKD007H is its impressive DC fault current interruption rating of up to 50,000 amperes. This capability is crucial for protecting circuits against severe short-circuit events, which can occur due to component failure, wiring issues, or external factors. By quickly clearing these faults, the fuse minimizes arc flash hazards and prevents cascading failures within the system. This Littelfuse fuse family is available in both standard and board-mount configurations, offering flexibility for various installation methods. Whether integrated directly onto a printed circuit board or used in a standard fuse holder within a combiner box or control panel, the KLKD007H provides a dependable solution. Its design adheres to stringent industry standards, including both UL and IEC photovoltaic fuse requirements, underscoring its suitability for global solar installations. Littelfuse, a recognized leader in circuit protection, leverages its extensive expertise to develop fuses like the KLKD007H that deliver consistent performance and longevity. The availability of a wide range of ampere ratings within the KLKD series allows engineers and designers to precisely match fuse specifications to the unique current requirements of their circuits, optimizing protection without oversizing. Key benefits and features of the Littelfuse KLKD007H include: * **Fast-Acting Performance:** Rapidly interrupts overcurrents to protect sensitive components. * **High DC Voltage Rating:** Ideal for high-voltage DC applications, including solar PV strings. * **Exceptional Fault Current Capacity:** Withstands and interrupts up to 50,000 amperes DC fault current. * **10x38mm Midget Style:** Standardized form factor for broad compatibility and ease of replacement. * **UL and IEC PV Standards Compliance:** Meets rigorous photovoltaic fuse requirements for global use. * **Versatile Configurations:** Available in standard and board-mount options for flexible integration. * **Reliable Manufacturer:** Backed by the trusted quality and innovation of Littelfuse. For engineers and technicians seeking uncompromising circuit protection in demanding DC environments, the Littelfuse KLKD007H fuse represents a superior choice, ensuring operational integrity and safety in critical infrastructure.
  • Fast-acting Midget-style fuse (10x38mm) for rapid overcurrent interruption.
  • High DC voltage rating suitable for demanding DC applications, including solar PV.
  • Robust 50,000 ampere DC fault current interruption capability.
  • Designed to meet UL and IEC photovoltaic fuse standards.
  • Available in standard and board-mount configurations for installation flexibility.

Specifications

Application
Power supplies
Brand Name
Littelfuse
Special Features
Fast Acting Fuses
Standard
UL Listed/CSA Certified
Sub Brand
KLKD Series
Type
10x38 Fuses
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 Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
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.

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.