Littelfuse LFT604001CS - The new Littelfuse Class T fuse blocks offer many advantages over previous generations that are noted in the features and benefits section. Of particular value is the space savings these new blocks provide.
Littelfuse

LFT604001CS

Alternate Item Number: LFT604001CS

UPC: 079458182033

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Overview

The Littelfuse Class T Fuse Block (LFT604001CS) sets a new benchmark in industrial circuit protection, combining advanced thermal management, space efficiency, and rugged durability to meet the demands of modern electrical systems. Designed as part of Littelfuse’s trusted Class T series, this fuse block delivers superior performance in high-fault applications while optimizing panel real estate—a critical advantage in today’s compact control systems. Engineered to exceed stringent industry standards, including UL and IEC certifications, the LFT604001CS ensures reliable operation in harsh environments, from manufacturing floors to renewable energy installations and transportation infrastructure. Key advantages of the LFT604001CS include its compact footprint, which reduces panel clutter without compromising protection. The innovative design incorporates high-interrupt rating capabilities, allowing it to safely interrupt high fault currents common in industrial motor controls, power distribution units, and variable frequency drives. Unlike traditional fuse blocks, the Class T series features a unique blade-style fuse interface that enhances contact integrity and minimizes heat buildup, extending service life and reducing maintenance costs. Professionals in electrical engineering, maintenance, and system integration consistently choose Littelfuse for its proven reliability and adherence to global safety standards. Typical applications span across heavy industries such as oil and gas, mining, and chemical processing, where dependable circuit protection is non-negotiable. The LFT604001CS excels in protecting transformers, busways, and branch circuits, ensuring compliance with NEC and OSHA requirements. Installation is streamlined thanks to its DIN-rail or panel-mount compatibility, with clear labeling and accessible terminals for quick servicing. Maintenance teams appreciate the fuse’s visual status indicator, enabling rapid diagnostics without disassembly. For engineers specifying Class T fuse blocks, Littelfuse’s reputation for innovation—backed by over a century of expertise—provides confidence in long-term system integrity. Selecting the right fuse block involves evaluating interrupt ratings, voltage ratings, and environmental resilience. The LFT604001CS supports up to 600V AC/DC and offers an interrupt rating of 200kA, making it suitable for high-energy systems. Its compact 1.5-inch width per pole allows for dense configurations in control panels, while the silver-plated copper terminals ensure low resistance and corrosion resistance. Littelfuse’s global distribution network and technical support further simplify procurement and troubleshooting, reinforcing its position as a preferred partner for industrial protection solutions. In summary, the Littelfuse Class T Fuse Block LFT604001CS is more than a component—it’s a strategic investment in system reliability and space optimization. Whether upgrading legacy systems or designing new installations, engineers and technicians rely on Littelfuse’s Class T series to deliver uncompromising protection with the efficiency modern applications demand.
  • Space-saving design optimizes panel layout for compact industrial applications
  • High interrupt rating (200kA) ensures superior fault current protection
  • Supports up to 600V AC/DC for versatile system compatibility
  • DIN-rail and panel-mount options for flexible installation
  • UL and IEC certified for global compliance and safety

Specifications

Brand Name
Littelfuse
Connection Type
Blade-style fuse interface
Material
Silver-plated copper
Mounting Type
DIN-rail or panel-mount
Series
Class T
Size
1.5-inch width per pole
Special Features
Universal mounting holes
Standard
UL Listed and CSA Certified RoHS
Sub Brand
LFT Series
Type
Fuse Block
Voltage Rating
600 V AC/DC
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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.