Littelfuse LFJ104501CST - The LFJ1000 solar fuse block is specifically designed for the Littelfuse SPFJ 1000 Vdc Solar Fuse. It meets UL electrical characteristic requirements and is available in multiple amperages.
Littelfuse

LFJ104501CST

Alternate Item Number: LFJ104501CST

UPC: 079458795615


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Overview

The Littelfuse LFJ1000 Solar Fuse Block is a high-performance, UL-certified solution engineered specifically for the Littelfuse SPFJ 1000 Vdc Solar Fuse. Designed to meet stringent UL electrical characteristic requirements, this fuse block delivers reliable and safe operation in demanding solar energy applications. Built to withstand harsh environmental conditions, the LFJ1000 series ensures long-term durability and performance, making it an ideal choice for professionals in the renewable energy sector. This fuse block is part of Littelfuse’s trusted SPFJ series, renowned for its robust design and compliance with industry standards. The LFJ1000 is available in multiple amperages, providing the flexibility needed to accommodate a wide range of solar system configurations. Whether deployed in residential, commercial, or utility-scale solar installations, this fuse block enhances system protection by safely isolating faults and preventing overcurrent conditions that could damage sensitive equipment. Key applications for the LFJ1000 Solar Fuse Block include photovoltaic (PV) arrays, combiner boxes, and inverter systems where high-voltage DC protection is critical. Its compact and modular design simplifies installation, reducing downtime and labor costs while ensuring compliance with NEC and IEC standards. Professionals in the solar industry rely on Littelfuse’s reputation for quality and innovation, knowing that products like the LFJ1000 are backed by decades of expertise in circuit protection. The LFJ1000 series is engineered for environments where temperature fluctuations, UV exposure, and mechanical stress are common. Its UL certification guarantees that it meets the highest safety and performance benchmarks, giving installers and system designers peace of mind. With Littelfuse’s global distribution network and dedicated technical support, customers can expect timely delivery and expert guidance for their solar protection needs. For solar energy professionals seeking a dependable, high-voltage DC fuse block, the Littelfuse LFJ1000 is a trusted solution that combines performance, compliance, and durability. Whether protecting a small rooftop array or a large-scale solar farm, this fuse block ensures that solar installations operate efficiently and safely for years to come.
  • UL-certified for compliance with electrical safety standards
  • Designed for Littelfuse SPFJ 1000 Vdc Solar Fuses
  • Available in multiple amperages for flexible system configurations
  • Built to withstand harsh environmental conditions
  • Compact and modular design for easy installation

Specifications

Brand Name
Littelfuse
Series
LFJ1000
Special Features
Space-saving DIN Rail Indication
Standard
UL Listed CSA Certified
Sub Brand
LF Series Fuseblock
Type
Class J Fuseblock
Voltage Rating
1000 Vdc
Package Weight (Imperial)
5.250 L
Package Weight (Metric)
2.381 kg
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

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Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
The LFJ1000 solar fuse block is specifically designed for the Littelfuse SPFJ 1000 Vdc Solar Fuse. It meets UL electrical characteristic requirements and is available in multiple amperages.

LFJ102001C

The LFJ1000 solar fuse block is specifically designed for the Littelfuse SPFJ 1000 Vdc Solar Fuse. It meets UL electrical characteristic requirements and is available in multiple amperages.
D4/8.SFT2.I.ADO

1SNA399777R1200

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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.