Littelfuse LFJ60400-3C - The Littelfuse 600 V Class J blocks offer generous space savings and enhanced value over previous generations, such as indication, snap-to-release DIN-rail mounting and universal mounting holes.
Littelfuse

LFJ60400-3C

Alternate Item Number: LFJ604003C

UPC: 079458181920


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Overview

The Littelfuse LFJ60400-3C 600V Class J fuse block represents a significant advancement in industrial circuit protection, offering a compelling blend of space savings, enhanced functionality, and superior value compared to previous generations. Engineered for demanding industrial environments, this fuse block is designed to reliably safeguard electrical systems from overcurrent and short-circuit conditions, ensuring operational continuity and equipment longevity. At its core, the LFJ60400-3C provides robust 600-volt protection, making it suitable for a wide array of high-power applications across various sectors, including manufacturing, automation, power distribution, and heavy machinery. The Class J designation signifies adherence to stringent safety and performance standards, assuring users of its capability to handle fault currents effectively and safely. This reliability is paramount in industrial settings where downtime can incur substantial financial losses and safety risks. A key design advantage of the LFJ60400-3C is its optimized space-saving footprint. In control panels and electrical enclosures where space is often at a premium, this compact design allows for more efficient layout and the potential to reduce enclosure size, leading to cost savings. Installation is streamlined thanks to the integrated snap-to-release DIN-rail mounting mechanism. This feature enables quick, tool-free attachment and removal from standard 35mm DIN rails, significantly reducing installation time and labor costs. Furthermore, the inclusion of universal mounting holes offers flexibility, allowing for alternative mounting configurations when DIN-rail installation is not feasible or preferred. Beyond its physical attributes, the LFJ60400-3C incorporates features that enhance its overall value proposition. While specific indication features are not detailed in the catalog description, the mention of 'indication' suggests potential for visual status monitoring, a crucial element for troubleshooting and maintenance in complex industrial systems. The universal mounting holes and snap-to-release DIN-rail mounting are practical enhancements that simplify integration into existing or new electrical infrastructure. Littelfuse is a globally recognized leader in circuit protection, and the LFJ60400-3C embodies their commitment to quality and innovation. Professionals choose Littelfuse for their unwavering dedication to product reliability, rigorous testing, and deep understanding of industrial application needs. This 600V Class J fuse block is an excellent choice for applications requiring dependable overcurrent protection, efficient space utilization, and ease of installation. Its robust construction and advanced design features make it a cost-effective and high-performance solution for critical industrial power systems. Key Features and Benefits: * **600V Class J Protection:** Ensures safe and reliable overcurrent and short-circuit protection for high-voltage industrial systems. * **Space-Saving Design:** Optimized footprint for efficient use of space in control panels and enclosures. * **Snap-to-Release DIN-Rail Mounting:** Facilitates quick, tool-free installation and removal from standard 35mm DIN rails. * **Universal Mounting Holes:** Provides flexible mounting options for diverse installation scenarios. * **Enhanced Value:** Offers improved functionality and cost-effectiveness over previous generations. * **Trusted Littelfuse Quality:** Backed by the reputation of a leading circuit protection manufacturer. Applications: * Industrial Automation and Control Systems * Power Distribution Panels * Motor Control Centers * Heavy Machinery and Equipment * Renewable Energy Systems * Commercial and Industrial Building Electrical Systems
  • 600V Class J fuse block for robust industrial circuit protection
  • Space-saving design optimizes enclosure layout and efficiency
  • Snap-to-release DIN-rail mounting for quick, tool-free installation
  • Universal mounting holes offer flexible installation options
  • Enhanced value and functionality over previous Littelfuse generations

Specifications

Brand Name
Littelfuse
Current Rating
400 A
Mounting Type
DIN-rail, universal mounting holes
Series
Class J
Special Features
Space-saving DIN Rail Indication
Standard
UL Listed CSA Certified
Sub Brand
LF Series Fuseblock
Type
Class J Fuseblock
Voltage Rating
600 V
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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.