Littelfuse SPF015HXR - 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

SPF015HXR

Alternate Item Number: 0SPF015.HXR

UPC: 079458169362

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Overview

The Littelfuse SPF015HXR Solar Protection Fuse (SKU: SPF015HXR) is a critical component engineered for the robust protection of photovoltaic (PV) systems. As solar energy installations continue to expand in scale and complexity, the demand for specialized circuit protection that can withstand higher system voltages and mitigate reverse overcurrent conditions becomes paramount. Standard circuit protection devices are often insufficient for the unique challenges presented by PV arrays, which can experience significant power losses due to long conductor runs and require protection against fault currents originating from multiple modules. The SPF series, including the SPF015HXR, addresses these challenges directly. These Midget-style fuses, measuring 10 x 38 mm, are specifically designed to safeguard PV modules and associated conductors from potentially damaging reverse overcurrents. This capability is essential for maintaining the integrity and longevity of solar installations. The increasing voltage requirements in modern PV systems, aimed at optimizing efficiency by minimizing resistive losses, necessitate protection devices rated for these demanding levels. The SPF015HXR is UL Listed, providing assurance that it can safely interrupt faulted circuits up to these elevated voltages, a critical safety and performance benchmark for solar applications. Littelfuse, a globally recognized leader in circuit protection, offers the SPF series with multiple ampere ratings. This allows for precise matching of protection to the specific requirements of diverse PV system designs, from residential rooftops to large-scale commercial and industrial solar farms. Proper fuse selection is crucial for ensuring that the protection scheme is both effective against faults and minimizes nuisance tripping during normal operation. The SPF015HXR's design ensures reliable performance, contributing to enhanced system safety, reduced downtime, and optimized energy production. By investing in Littelfuse SPF solar protection fuses, system designers and installers can be confident in the security and efficiency of their photovoltaic investments. Key features and benefits of the Littelfuse SPF015HXR include: * **Specialized PV System Protection:** Designed exclusively for photovoltaic applications, offering tailored protection against reverse overcurrents. * **High Voltage Capability:** UL Listed to safely interrupt faulted circuits at demanding voltage levels common in modern PV systems. * **Midget Style (10 x 38 mm):** Compact form factor suitable for integration into various PV system configurations and enclosures. * **Multiple Ampere Ratings:** Available in a range of current ratings to precisely match specific PV module and conductor protection needs. * **Enhanced System Safety:** Contributes to the overall safety and reliability of solar installations by preventing damage from electrical faults. * **Manufacturer Reputation:** Backed by Littelfuse, a trusted name in circuit protection with decades of experience and innovation in electrical safety solutions. When specifying circuit protection for solar projects, the Littelfuse SPF015HXR stands out as a reliable and compliant solution. Its ability to meet stringent UL requirements for high-voltage PV applications makes it an indispensable component for ensuring the long-term performance and safety of solar energy infrastructure.
  • Specifically designed for photovoltaic (PV) system protection.
  • Midget style fuse (10 x 38 mm) for compact integration.
  • UL Listed for safe interruption of faulted circuits up to demanding voltage levels.
  • Protects PV modules and conductors from reverse overcurrent conditions.
  • Available in multiple ampere ratings to match specific application requirements.

Specifications

Application
1000 VDC PV
Brand Name
Littelfuse
Current Rating
15 A
Series
SPF
Size
10 x 38 mm
Special Features
Solar
Standard
UL 2579 IEC 60269-6
Sub Brand
SPF Series
Type
Full Range

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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.