Littelfuse SPXI003.TXB - 1500 VDC 3A INLINE MIDGET FUSE 8AWG
Littelfuse

SPXI003.TXB

UPC: 079458285673


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Specification Sheet

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Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

Overview

The **Littelfuse SPXI003.TXB** is a high-performance **1500VDC 3A inline midget fuse** engineered for **photovoltaic (PV) systems** and other high-voltage industrial applications. Designed to integrate seamlessly into wire harnesses, this fuse provides **superior circuit protection** while optimizing space and installation efficiency. As part of the **SPXI Series**, it is specifically tailored for **solar power systems**, including homerun, trunk, and wire harness applications, where reliability and safety are critical. **Key Features & Benefits:** - **High Interrupting Rating:** With a **50,000A interrupting rating**, the SPXI003.TXB ensures robust protection against overcurrent events, safeguarding sensitive PV and industrial equipment from damage. - **Compact & Space-Saving Design:** The **one-piece cap design** eliminates joints, simplifying wire crimping and molding while reducing overall footprint—ideal for tight installation spaces in solar arrays and industrial panels. - **No Fuse Holder Required:** This **inline fuse** installs directly into the wire harness, eliminating the need for additional mounting hardware and streamlining assembly processes. This design choice reduces both material costs and installation time, making it a cost-effective solution for large-scale PV installations. - **Versatile Wire Compatibility:** Engineered for **8 AWG (10mm²) wire**, the SPXI003.TXB supports high-capacity current flow while maintaining thermal stability. It is compatible with recommended crimping tools such as the **T&B Sta-Kon ERG4**, ensuring secure and reliable connections. - **Robust Construction & Compliance:** The fuse body is constructed from **melamine**, providing excellent thermal and electrical insulation, while the **copper alloy (nickel-plated) caps** enhance corrosion resistance. It meets **UL 248-1/19** and **IEC 60269-6** standards, with **UL Recognized (File: E339112)** and **TUV (Cert: J 50495785)** certifications, ensuring global compliance and peace of mind. **Industry Applications:** The SPXI003.TXB is a trusted choice for professionals in **solar power generation**, **utility-scale PV installations**, and **commercial/industrial electrical systems** where high-voltage DC protection is essential. Its **1500VDC rating** makes it particularly well-suited for: - **Photovoltaic (PV) Systems:** Protecting solar panels, combiner boxes, and inverter inputs from overcurrent conditions. - **Energy Storage Systems (ESS):** Safeguarding battery banks and power conversion equipment in renewable energy storage applications. - **Industrial High-Voltage Equipment:** Providing circuit protection in motor controls, power supplies, and other DC-driven machinery. - **Telecommunications & Data Centers:** Ensuring reliable power distribution in critical infrastructure where downtime is unacceptable. **Why Choose Littelfuse?** With over a century of expertise in **circuit protection solutions**, Littelfuse is a global leader in designing and manufacturing fuses that meet the demands of modern electrical systems. The **SPXI Series** reflects the company’s commitment to innovation, safety, and performance, offering engineers and installers a **dependable, space-efficient, and high-interrupting solution** for high-voltage DC applications. Whether deployed in a **utility-scale solar farm** or a **compact industrial control panel**, the SPXI003.TXB delivers **uncompromising protection** while simplifying installation and reducing total system costs. For technical documentation, compliance certificates, or additional resources, visit **Littelfuse.com/spxi** or contact a trusted distributor like **Gross Automation** for expert support and bulk ordering options.
  • 1500VDC rated for high-voltage PV and industrial systems
  • 50,000A interrupting rating for superior overcurrent protection
  • Compact inline design eliminates need for fuse holders
  • UL Recognized & TUV certified for global compliance
  • Compatible with 8 AWG (10mm²) wire and recommended crimping tools

Specifications

Connection Type
Inline (Direct Wire Harness)
Current Rating
3 A
Material
Melamine, Copper Alloy (Nickel-Plated)
Mounting Type
Inline (No Holder Required)
Series
SPXI
Size
Midget
Voltage Rating
1500 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 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.