Littelfuse LFH25030-3P - 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

LFH25030-3P

Alternate Item Number: LFH250303P

UPC: 079458181319

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Overview

The Littelfuse Class H Fuse Block LFH25030-3P represents a significant advancement in industrial circuit protection, offering enhanced performance and unwavering reliability for critical electrical systems. Engineered by Littelfuse, a globally recognized leader in circuit protection, this fuse block is designed to meet the rigorous demands of modern industrial and commercial environments. Its robust construction and advanced features ensure optimal safety and operational efficiency, making it an indispensable component for safeguarding valuable equipment and personnel. The LFH25030-3P is specifically designed for use with Class H fuses, providing dependable overcurrent protection. While dimensionally identical to Class R fuse blocks, a key distinction is the absence of the rejection feature found in Class R blocks. This means that while Class R blocks are designed to exclusively accept Class R fuses, preventing the insertion of lower-rated fuses, the Class H LFH25030-3P is compatible with Class H fuses, ensuring proper application and system integrity. This compatibility is crucial for maintaining the intended protection levels and preventing potential system failures. Key advantages of this new generation of Littelfuse Class H blocks, as detailed in their comprehensive features and benefits, include improved durability, enhanced electrical contact reliability, and simplified installation. These improvements translate directly into reduced downtime, lower maintenance costs, and a more secure electrical infrastructure. The LFH25030-3P is built to withstand harsh industrial conditions, including vibration, temperature fluctuations, and corrosive atmospheres, ensuring long-term performance. Applications for the Littelfuse LFH25030-3P fuse block are extensive, spanning across various sectors such as manufacturing plants, power distribution systems, HVAC installations, and heavy machinery control panels. It is ideal for protecting motors, transformers, power supplies, and other sensitive electrical loads that require reliable and cost-effective overcurrent protection. Professionals in electrical engineering, maintenance, and system design rely on Littelfuse products for their proven quality and adherence to stringent industry standards. When selecting a fuse block, considerations such as voltage rating, current rating, interrupt rating, and fuse type compatibility are paramount. The LFH25030-3P, with its Class H designation, is a testament to Littelfuse's commitment to providing a comprehensive range of protection solutions tailored to specific application needs. Its robust design and the trusted Littelfuse brand name ensure that users are investing in a product that delivers exceptional value and peace of mind. The UNSPSC code 39121629 further categorizes this product within the electrical fuse and protector components market, highlighting its specific industrial utility.
  • Littelfuse Class H Fuse Block, SKU LFH25030-3P
  • Designed for reliable overcurrent protection with Class H fuses
  • Robust construction for demanding industrial environments
  • Advanced features offering enhanced performance and reliability
  • Dimensionally compatible with Class R fuse blocks

Specifications

Brand Name
Littelfuse
Poles
3P
Series
Class H
Special Features
Universal mounting holes
Standard
UL Listed CSA Recognized
Sub Brand
LF Series Fuseblock
Type
Class H Fuseblock
Fuse Block 250VAC 250VDC Class R 400A 3-Pole Copper Box In-Line Clip

24063R

Fuse Block 250VAC 250VDC Class R 400A 3-Pole Copper Box In-Line Clip
3PH15P18MM is a compact-sized POWR Busbar system that provides safe distribution of electrical power to multiple dead front fuse holders and measures 266 mm in length, which can be cut down to an optimal size. See datasheet for more detailed specifications.

3PH15P18MM

3PH15P18MM is a compact-sized POWR Busbar system that provides safe distribution of electrical power to multiple dead front fuse holders and measures 266 mm in length, which can be cut down to an optimal size. See datasheet for more detailed specifications.

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.