Littelfuse LFH25060-3CID - 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.
Littelfuse

LFH25060-3CID

Alternate Item Number: LFH250603CID

UPC: 079458181258

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Overview

The Littelfuse Class H fuse block (SKU: LFH25060-3CID) represents the next generation of industrial circuit protection, engineered to deliver unmatched reliability and performance in demanding environments. Designed as a direct upgrade to previous Class H blocks, this advanced solution incorporates critical enhancements that address common pain points in industrial power distribution systems, control panels, and machinery protection applications. Unlike conventional fuse blocks, the LFH25060-3CID maintains dimensional consistency with Class R blocks while incorporating a rejection feature that ensures only Class R fuses can be inserted, eliminating the risk of incorrect fuse installation—a critical safety consideration in high-stakes industrial operations. This Class H fuse block from Littelfuse is specifically engineered for applications where circuit protection is non-negotiable. In industrial settings such as manufacturing plants, data centers, renewable energy systems, and heavy machinery operations, reliable overcurrent protection is essential to prevent equipment damage, reduce downtime, and maintain operational continuity. The rejection feature not only enhances safety by preventing the insertion of incompatible fuses but also streamlines maintenance procedures by reducing the likelihood of human error during fuse replacement. Professionals in electrical engineering, plant maintenance, and system design consistently prioritize fuse blocks that combine dimensional compatibility with advanced safety features, making the LFH25060-3CID an ideal choice for modern industrial applications. The robust construction of the Littelfuse Class H fuse block ensures long-term durability even in harsh industrial environments. Constructed from high-quality materials, this fuse block is designed to withstand vibration, temperature fluctuations, and electrical stress while maintaining consistent performance over its operational lifespan. Its compatibility with Class R fuses provides an additional layer of flexibility, allowing engineers to upgrade existing systems without requiring complete redesigns—a critical consideration for facilities with evolving power requirements. Installation is straightforward, with standardized mounting configurations that align with common industrial panel designs, reducing both installation time and potential errors. Littelfuse, a global leader in circuit protection solutions, has built a reputation for innovation and reliability across industrial, commercial, and residential applications. With decades of expertise in fuse technology, the company’s Class H blocks are trusted by electrical professionals worldwide for their precision engineering and adherence to stringent industry standards. The LFH25060-3CID is no exception, offering a combination of backward compatibility, advanced safety features, and superior build quality that sets it apart in a competitive market. Whether deployed in new installations or as part of system upgrades, this fuse block delivers the performance and peace of mind that industrial operators demand. Key applications for the Littelfuse Class H fuse block include motor control centers, power distribution units, industrial control panels, and renewable energy systems. In these environments, the ability to quickly and safely replace fuses without risking incorrect installation is a significant advantage. Maintenance teams benefit from reduced downtime and lower risk of equipment damage, while engineers appreciate the flexibility to integrate this block into existing Class R-compatible systems. The LFH25060-3CID is particularly well-suited for facilities where operational reliability is paramount, such as chemical processing plants, water treatment facilities, and automotive manufacturing lines. For professionals evaluating circuit protection solutions, the Littelfuse Class H fuse block stands out as a cost-effective, high-performance option that addresses both immediate safety concerns and long-term system reliability. Its design reflects a deep understanding of industrial challenges, from electrical stress to maintenance constraints, making it a trusted choice for those who cannot afford compromises in protection quality. By choosing Littelfuse, engineers and facility managers gain access to a product backed by one of the industry’s most respected names in circuit protection, ensuring that their systems are safeguarded by technology that meets the highest standards of safety and performance.
  • Dimensional compatibility with Class R fuse blocks for seamless system integration
  • Rejection feature prevents incorrect fuse insertion, enhancing safety and reducing downtime
  • Robust construction withstands harsh industrial environments and electrical stress
  • Designed for motor control centers, power distribution units, and industrial panels
  • Backed by Littelfuse’s reputation for innovation and circuit protection excellence

Specifications

Brand Name
Littelfuse
Series
Class H
Special Features
Universal mounting holes
Standard
UL Listed CSA Recognized
Sub Brand
LF Series Fuseblock
Type
Class H Fuseblock
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
BB18 is a three-phase busbar terminal power feed lug, which is intended for use with LPSM/LPSC series fuse holders. See datasheet for more detailed specifications.

BB18

BB18 is a three-phase busbar terminal power feed lug, which is intended for use with LPSM/LPSC series fuse holders. See datasheet for more detailed specifications.
D4/8.SFT2.I.ADO

1SNA399777R1200

D4/8.SFT2.I.ADO
2000W 5V 150A 24V 10A 2-12V 1P

SH20-P3T53J4

2000W 5V 150A 24V 10A 2-12V 1P

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.