Littelfuse LFR606001C - The new Littelfuse Class H and R 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

LFR606001C

Alternate Item Number: LFR606001C

UPC: 079458181401

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Overview

The Littelfuse Class H and R fuse blocks, identified by SKU LFR606001C, represent a significant advancement in electrical protection solutions for demanding industrial environments. Engineered by Littelfuse, a globally recognized leader in circuit protection, these fuse blocks offer superior safety, reliability, and operational efficiency compared to previous generations. A key differentiator lies in their dimensional compatibility; both Class H and Class R blocks share identical physical footprints, simplifying retrofitting and integration into existing electrical infrastructure. This interchangeability ensures a seamless transition without requiring extensive panel modifications. However, the critical distinction resides in the Class R blocks' integrated rejection feature. This intelligent design element exclusively permits the insertion of Class R fuses, effectively preventing the installation of incorrect fuse types. This rejection mechanism is paramount for maintaining the integrity of the protection system, safeguarding equipment from overcurrent events that could arise from improper fuse selection. By enforcing the use of appropriately rated Class R fuses, these blocks significantly enhance operational safety and mitigate the risk of costly downtime and equipment damage. These fuse blocks are meticulously designed for high-performance applications where precise fuse compatibility and robust overcurrent protection are non-negotiable. Typical applications span a wide range of industrial sectors, including: * **Manufacturing Facilities:** Protecting heavy machinery, control panels, and power distribution systems. * **Power Generation:** Ensuring the reliable operation of critical electrical components in power plants. * **Commercial Buildings:** Safeguarding HVAC systems, lighting controls, and emergency power. * **Transportation Infrastructure:** Providing protection for signaling systems and power distribution in rail and transit. Littelfuse's unwavering commitment to quality and innovation is evident in the LFR606001C series. These fuse blocks are built to meet stringent industry standards, delivering dependable performance even under the most challenging operational conditions. Professionals rely on Littelfuse for their expertise in circuit protection, and this product line exemplifies that trust. The robust construction and advanced features of these Class H and R fuse blocks ensure that critical electrical systems remain protected, operational, and safe, making them an indispensable component for any industrial electrical installation requiring reliable overcurrent protection and guaranteed fuse compatibility.
  • Dimensionally identical Class H and Class R fuse blocks for easy integration.
  • Class R blocks feature a rejection feature to ensure only Class R fuses can be inserted.
  • Enhances safety by preventing incorrect fuse installations and potential equipment damage.
  • Designed for high-performance industrial applications requiring precise fuse compatibility.
  • Manufactured by Littelfuse, a trusted leader in circuit protection solutions.

Specifications

Brand Name
Littelfuse
Special Features
Universal mounting holes
Standard
UL Listed and CSA Certified RoHS
Sub Brand
LFR Series
Type
Fuse Block
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.