Littelfuse SPXI03.5 - 1500VDC INLINE MIDGET SOLAR FUSE
Littelfuse

SPXI03.5

UPC: 079458808087


Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

Overview

The **Littelfuse SPXI03.5 1500VDC Inline Midget Solar Fuse** is a high-performance, compact protection solution engineered for the rigorous demands of modern solar power systems. Designed to safeguard sensitive components in high-voltage DC circuits, this fuse delivers reliable overcurrent protection while maintaining system efficiency and uptime. With a voltage rating of **1500 VDC**, the SPXI03.5 is specifically tailored for solar applications where space constraints and high energy throughput are critical considerations. **Key Features and Benefits:** - **High Voltage Rating (1500 VDC):** Ensures compatibility with high-capacity solar arrays and inverters, preventing catastrophic failures in DC circuits. - **Inline Midget Design:** Compact footprint allows for easy integration into tight spaces, such as solar combiner boxes, inverters, and charge controllers, without compromising performance. - **Superior Interrupting Rating:** Engineered to safely interrupt fault currents in high-energy solar systems, protecting downstream components from damage. - **Durable Construction:** Built to withstand harsh environmental conditions, including temperature fluctuations, UV exposure, and moisture, ensuring long-term reliability in outdoor solar installations. - **Fast-Acting Response:** Minimizes downtime by quickly isolating faults, reducing the risk of cascading failures in solar power systems. **Industry Applications:** The SPXI03.5 is ideal for a wide range of solar power applications, including: - **Solar Inverters:** Protects inverter circuits from overcurrent conditions, ensuring safe and efficient power conversion. - **Charge Controllers:** Safeguards battery banks and charge controllers from fault currents in off-grid and grid-tied systems. - **Solar Combiner Boxes:** Provides branch circuit protection in large-scale solar arrays, where multiple strings converge. - **Energy Storage Systems (ESS):** Suitable for DC-side protection in battery storage systems integrated with solar arrays. - **Utility-Scale Solar Farms:** Ensures reliable protection in high-voltage DC circuits, reducing maintenance costs and improving system longevity. **Why Choose Littelfuse?** Littelfuse is a global leader in circuit protection, with over a century of innovation and expertise in developing solutions for industrial, commercial, and renewable energy applications. The SPXI03.5 reflects the company’s commitment to quality, reliability, and performance, backed by rigorous testing and industry certifications. Professionals in the solar industry trust Littelfuse for products that deliver consistent protection, even in the most demanding environments. Whether you’re designing a residential rooftop system or a utility-scale solar farm, the SPXI03.5 provides the peace of mind that comes with superior engineering and unmatched durability. **Installation and Selection Considerations:** When selecting a fuse for solar applications, it’s essential to consider the system’s voltage, current, and environmental conditions. The SPXI03.5’s **1500 VDC rating** makes it suitable for high-voltage systems, while its inline midget design ensures compatibility with space-constrained installations. For optimal performance, professionals should: - **Match the fuse rating to the system’s requirements:** Ensure the fuse’s current rating aligns with the maximum continuous current of the protected circuit. - **Consider environmental factors:** Verify that the fuse’s construction can withstand the specific conditions of the installation site, such as temperature extremes or corrosive environments. - **Follow manufacturer guidelines:** Adhere to Littelfuse’s installation and maintenance recommendations to maximize the fuse’s lifespan and reliability. With the **Littelfuse SPXI03.5**, solar professionals gain a trusted solution for high-voltage DC protection, combining compact design, robust performance, and industry-leading reliability. Whether deployed in residential, commercial, or utility-scale solar projects, this fuse ensures that your system operates safely, efficiently, and without interruption.
  • 1500 VDC voltage rating for high-capacity solar arrays
  • Inline midget design for space-constrained installations
  • Superior interrupting rating for fault current protection
  • Durable construction for harsh outdoor environments
  • Fast-acting response to minimize system downtime
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.