Littelfuse LFH25200-3C - 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

LFH25200-3C

Alternate Item Number: LFH252003C

UPC: 079458181203

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Overview

The Littelfuse Class H fuse block, SKU LFH25200-3C, represents a significant advancement in industrial circuit protection, offering enhanced reliability and safety for critical electrical systems. Designed by Littelfuse, a globally recognized leader in circuit protection, this Class H block leverages decades of engineering expertise to deliver superior performance in demanding industrial environments. Its robust construction and advanced features ensure dependable operation, safeguarding valuable equipment and personnel from electrical faults. This Class H fuse block is engineered to provide robust protection for a wide range of industrial applications. Its design prioritizes ease of installation and maintenance, crucial factors in high-uptime industrial settings. The LFH25200-3C is dimensionally identical to Class R fuse blocks, allowing for seamless integration into existing infrastructure. However, a key distinction lies in its compatibility and safety features. While Class R blocks incorporate a rejection feature that exclusively accepts Class R fuses, this Class H block is designed for Class H fuses, ensuring proper application and preventing the insertion of incompatible fuse types. This rejection mechanism, when applied to Class R blocks, is a critical safety feature that mitigates the risk of incorrect fuse usage, which can lead to equipment damage or fire hazards. Key advantages of this new generation of Littelfuse Class H blocks include: * **Enhanced Reliability:** Built with high-quality materials and precision engineering for consistent performance. * **Improved Safety:** Designed to prevent the use of incorrect fuse types, enhancing overall system safety. * **Dimensional Compatibility:** Matches Class R fuse blocks for straightforward retrofitting and integration. * **Robust Construction:** Suitable for harsh industrial conditions, ensuring longevity and dependable operation. * **Trusted Manufacturer:** Backed by Littelfuse's reputation for quality and innovation in circuit protection solutions. Industrial facilities, manufacturing plants, power distribution centers, and other critical infrastructure rely heavily on effective circuit protection. The Littelfuse Class H fuse block LFH25200-3C is an ideal choice for applications requiring reliable overcurrent protection. Its ability to maintain dimensional compatibility with Class R blocks while adhering to Class H fuse specifications provides flexibility for engineers and maintenance personnel. The commitment to preventing fuse misapplication through design underscores Littelfuse's dedication to safety and operational integrity. By choosing the LFH25200-3C, industrial operators can be confident in the protection of their electrical circuits, minimizing downtime and ensuring the continuous operation of essential machinery and systems. This fuse block is a testament to Littelfuse's ongoing efforts to provide advanced, safe, and reliable circuit protection solutions for the modern industrial landscape.
  • Littelfuse Class H fuse block for industrial circuit protection.
  • SKU: LFH25200-3C
  • Dimensionally identical to Class R fuse blocks for compatibility.
  • Designed for reliable overcurrent protection in demanding environments.
  • Manufactured by Littelfuse, a trusted leader in circuit protection.

Specifications

Brand Name
Littelfuse
Series
Class H fuse block
Special Features
Universal mounting holes
Standard
UL Listed CSA Recognized
Sub Brand
LF Series Fuseblock
Type
Class H Fuseblock
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

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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.

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LFG60020-2SQDINR

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L60030C-2PQ

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LD3955-2

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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.