Littelfuse SPFI010L - 1000VDC INLINE MIDGET SOLAR FUSE BULK 50-PACK
Littelfuse

SPFI010L

UPC: 079458808605


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Overview

The Littelfuse SPFI010L 1000VDC Inline Midget Solar Fuse Bulk 50-Pack delivers robust overcurrent protection for high-voltage photovoltaic (PV) systems, ensuring safety and operational efficiency in solar power installations. Designed to meet UL 248-19 standards, this series of inline fuses is engineered specifically for the demanding requirements of solar energy applications, including residential, commercial, and industrial installations. The SPFI series eliminates the need for separate fuse holders, streamlining installation and reducing both space and labor costs while maintaining superior electrical performance. Key features of the SPFI010L include a one-piece cap design that simplifies wire crimping and overmolding processes, enhancing reliability and durability in harsh environmental conditions. The melamine body and nickel-plated copper alloy caps provide excellent resistance to corrosion and mechanical stress, ensuring long-term performance in outdoor solar arrays. With an impressive 20,000 A interrupting rating, these fuses are capable of safely interrupting fault currents in high-voltage DC systems, protecting sensitive PV modules and conductors from reverse overcurrent conditions. The SPFI010L is available in ampere ratings ranging from 2A to 30A, allowing professionals to select the optimal protection level for specific system requirements. This flexibility makes it ideal for a wide range of applications, including solar panel arrays, charge controllers, combiner boxes, and battery storage systems. The inline connection type ensures easy integration into wire harnesses, while the compact midget design (10 x 38 mm) facilitates installation in tight spaces without compromising performance. Littelfuse, a global leader in circuit protection solutions, has designed the SPFI series to comply with critical industry standards, including UL 248-19, TÜV (Cert: J 50505290), and IEC 60269-6, ensuring compliance with international safety and performance requirements. The fuses are also RoHS and REACH compliant, reflecting Littelfuse’s commitment to environmental responsibility and sustainability. With a country of origin in Mexico and US Patent 9,564,281, the SPFI010L represents a blend of innovation, quality, and reliability. For professionals seeking dependable DC protection in solar power systems, the Littelfuse SPFI010L 1000VDC Inline Midget Solar Fuse Bulk 50-Pack offers a cost-effective solution that minimizes downtime and maintenance costs. Whether deployed in utility-scale solar farms, commercial rooftop installations, or residential off-grid systems, these fuses provide the performance and durability required to safeguard critical infrastructure. Trusted by engineers and installers worldwide, Littelfuse’s SPFI series is a proven choice for protecting high-voltage DC circuits in renewable energy applications.
  • UL 248-19 and TÜV certified for solar PV systems
  • 20,000 A interrupting rating for high-voltage DC protection
  • One-piece cap design simplifies crimping and overmolding
  • No fuse holder required, reducing installation time and costs
  • Available in ampere ratings from 2A to 30A for flexible system design

Specifications

Connection Type
Inline
Current Rating
2A to 30A
Material
Melamine body, Nickel-plated copper alloy caps
Series
SPFI
Size
10 x 38 mm
Voltage Rating
1000 Vdc
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 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
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

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

9F61BWW460

9F61 Size B Clips 1.6in

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.