Littelfuse 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.
Littelfuse

LFJ102001C

Alternate Item Number: LFJ102001C

UPC: 079458950083


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Overview

The Littelfuse LFJ1000 Solar Fuse Block (SKU: LFJ102001C) is engineered for robust overcurrent protection in 1000 Vdc solar power systems. Specifically designed to house the Littelfuse SPFJ 1000 Vdc Solar Fuse series, this fuse block ensures the safety and integrity of photovoltaic installations. It meets stringent UL electrical characteristic requirements, providing reliable protection against electrical faults and surges. The LFJ1000 series is available in multiple configurations including Clip-to-Box Lug, Stud-to-Stud, and Clip-to-Stud, offering flexibility for various system designs. Key features include a narrow width for space savings, a range of amperages (200A, 400A, 450A) to match SPFJ fuse options, and durable construction suitable for solar environments. The Box Lug termination style accommodates a wide range of cable sizes (e.g., 250 kcmil - #6 for 200A models), and stud-mounted options increase convenience. Materials include a thermoplastic base, tin-plated copper alloy fuse clips, and aluminum box lugs. This fuse block is UL 4248-18 Listed (File: E345481 Vol. 1) and RoHS Compliant. Applications include inverters, re-combiner boxes, and DC cable protection. The LFJ1000 series is essential for professional solar power system design, ensuring compliance with electrical codes and standards while safeguarding sensitive equipment and maintaining operational efficiency.
  • Designed for Littelfuse SPFJ 1000 Vdc Solar Fuses
  • Meets UL electrical characteristic requirements
  • Available in Clip-to-Box Lug, Stud-to-Stud, and Clip-to-Stud configurations
  • Supports 200A, 400A, and 450A amperages
  • Narrow width for space savings in solar installations

Specifications

Brand Name
Littelfuse
Connection Type
Clip-to-Box Lug, Stud-to-Stud, Clip-to-Stud
Current Rating
200A, 400A, 450A
Material
Thermoplastic base, tin-plated copper alloy fuse clips, aluminum box lugs
Series
LFJ1000
Size
Narrow width
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)
1.949 L
Package Weight (Metric)
886.000 g
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The new Littelfuse Class H blocks offer many advantages over previous generations that are noted in the features and benefits section. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted.

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.