Littelfuse SPF010H - 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

SPF010H

Alternate Item Number: 0SPF010.H

UPC: 079458169294

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Overview

The Littelfuse SPF010H Solar Protection Fuse (SKU: SPF010H) is a critical component engineered for the demanding environment of photovoltaic (PV) systems. As solar energy installations continue to scale, so do their voltage requirements, often necessitating higher system voltages to mitigate power loss over extended conductor runs. Standard circuit protection devices are frequently inadequate for the unique challenges presented by PV arrays, particularly in safeguarding against reverse overcurrent conditions. The SPF series, including the SPF010H, is specifically designed to address these limitations. This Midget-style fuse, measuring 10 x 38 mm, offers robust protection for both PV modules and associated conductors. Its primary function is to safely interrupt faulted circuits, preventing damage and ensuring the longevity and reliability of your solar power generation system. The Littelfuse SPF010H is UL Listed, a crucial certification that validates its capability to safely interrupt circuits at the elevated voltage levels commonly found in modern PV installations. This ensures compliance with stringent safety standards and provides peace of mind for installers and system owners alike. Littelfuse, a globally recognized leader in circuit protection, leverages its extensive expertise to deliver solutions tailored to specific industry needs. The SPF010H is available in multiple ampere ratings, allowing for precise matching to the unique requirements of diverse PV system designs. This flexibility is essential for optimizing protection without oversizing components, contributing to overall system efficiency and cost-effectiveness. By employing the SPF010H, you are investing in a proven technology designed to withstand the rigors of solar applications, from residential rooftops to large-scale utility farms. Key benefits of integrating the Littelfuse SPF010H into your PV system include: * **Specialized PV Protection:** Designed exclusively for photovoltaic systems, offering tailored safety and performance. * **Reverse Overcurrent Mitigation:** Effectively protects PV modules and conductors from damaging reverse current. * **High Voltage Interruption:** UL Listed to safely interrupt faulted circuits at demanding PV system voltages. * **Midget Style (10 x 38 mm):** Compact form factor suitable for various fuse holders and panel designs. * **Multiple Ampere Ratings:** Available in a range of current ratings to meet specific application needs. * **Reduced Power Loss:** Facilitates the use of longer conductor runs by enabling higher system voltages, minimizing resistive losses. * **Enhanced System Reliability:** Prevents cascading failures and protects valuable solar assets. When selecting circuit protection for your solar installations, choosing components specifically designed for the application is paramount. The Littelfuse SPF010H Solar Protection Fuse stands out as a reliable, high-performance solution that meets and exceeds the safety and operational demands of modern photovoltaic systems. Its robust construction and adherence to rigorous safety standards make it an indispensable choice for ensuring the integrity and efficiency of your solar investment. Trust Littelfuse for advanced circuit protection that powers your future.
  • Specifically designed for photovoltaic (PV) system protection.
  • Midget style fuse (10 x 38 mm) for compact installations.
  • Safely protects PV modules and conductors from reverse overcurrent conditions.
  • UL Listed for high-voltage applications, ensuring safe interruption of faulted circuits.
  • Available in multiple ampere ratings to match diverse PV system requirements.

Specifications

Application
1000 VDC PV
Brand Name
Littelfuse
Series
SPF
Size
10 x 38 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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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.