Littelfuse SPF006 - The SPF Solar Protection Fuse series has been specifically designed for the protection of photovoltaic (PV) systems. This family of Midget style fuses (10 x 38 mm) can safely protect PV modules and conductors from reverseovercurrent conditions. As PV systems have grown in size, so have the corresponding voltage requirements. This increase in system voltage has typically been intended to minimize power loss associated with long conductor runs. Standard circuit protection devices are not designed to completely protect photovoltaic panels. However, the SPF series is UL Listed to safely interrupt faulted circuits up to this demanding voltage level. Littelfuse offers multiple ampere ratings to match specific requirements in a variety of applications.
Littelfuse

SPF006

Alternate Item Number: 0SPF006.T

UPC: 079458169225


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Overview

The Littelfuse SPF006 Solar Protection Fuse (SKU: SPF006) is a critical component engineered specifically for the robust demands of photovoltaic (PV) system protection. As solar energy installations continue to grow in scale and complexity, so too have their voltage requirements, driven by the need to minimize power losses over extended conductor runs. Standard circuit protection devices often fall short when faced with the unique challenges presented by PV arrays. The SPF series, including the SPF006, is meticulously designed to address these limitations, offering specialized protection for PV modules and conductors against hazardous reverse overcurrent conditions. This Midget-style fuse, with its compact 10 x 38 mm form factor, integrates seamlessly into PV system designs. Its primary function is to ensure the safety and reliability of solar power generation by interrupting fault currents that could otherwise damage sensitive equipment or pose a safety risk. The Littelfuse SPF006 is UL Listed, a testament to its ability to safely interrupt faulted circuits at the elevated voltage levels commonly encountered in modern PV systems. This certification provides installers and system owners with the assurance that the fuse meets stringent safety and performance standards. Littelfuse, a globally recognized leader in circuit protection, leverages its extensive expertise to deliver solutions like the SPF006 that are tailored to specific industry needs. The SPF series offers a range of ampere ratings, allowing for precise matching to the unique requirements of diverse PV applications, from residential rooftop installations to large-scale commercial solar farms. Proper fuse selection is paramount in PV system design to ensure optimal protection without nuisance tripping, and the availability of multiple ratings for the SPF006 simplifies this critical decision-making process. Key benefits and features of the Littelfuse SPF006 Solar Protection Fuse include: * **Specialized PV Protection:** Designed exclusively for photovoltaic systems, offering superior protection compared to general-purpose fuses. * **High-Voltage Capability:** UL Listed to safely interrupt circuits at demanding voltage levels typical of modern PV installations. * **Reverse Overcurrent Protection:** Effectively safeguards PV modules and conductors from damaging reverse current flow. * **Compact 10 x 38 mm Form Factor:** Midget-style fuse size ensures compatibility with standard fuse holders and compact system designs. * **Multiple Ampere Ratings:** Available in various current ratings to precisely match system protection needs and optimize performance. * **Enhanced System Safety:** Minimizes the risk of equipment damage and fire hazards associated with electrical faults. * **Reduced Power Loss:** Contributes to efficient system operation by preventing unnecessary power dissipation. Implementing the Littelfuse SPF006 is an essential step in building a resilient and safe solar energy infrastructure. Its advanced design and rigorous testing ensure that PV systems operate efficiently and reliably, even under challenging conditions. For professionals in the solar industry, specifying the SPF006 signifies a commitment to quality, safety, and long-term system integrity, backed by the trusted reputation of Littelfuse.
  • Specifically designed for photovoltaic (PV) system protection.
  • UL Listed for safe interruption of high-voltage faulted circuits.
  • Protects PV modules and conductors from reverse overcurrent conditions.
  • Compact 10 x 38 mm Midget-style fuse form factor.
  • Available in multiple ampere ratings for tailored system protection.

Specifications

Application
1000 VDC PV
Brand Name
Littelfuse
Series
SPF
Size
10x38 mm
Special Features
Solar
Standard
UL 2579 IEC 60269-6
Sub Brand
SPF Series
Type
Full Range
Package Weight (Imperial)
0.015 L
Package Weight (Metric)
7.010 g
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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

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9F61 Size B Clips 1.6in

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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.