Littelfuse LRU-213 - Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.
Littelfuse

LRU-213

Alternate Item Number: LRU213

UPC: 079458938906

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Overview

The Littelfuse® LRU Series fuse reducers, including the LRU-213 model, are essential components for ensuring precise and safe electrical circuit protection in industrial and commercial applications. These innovative reducers are engineered to bridge the gap between fuse holder sizes and fuse ratings, allowing for the installation of smaller, appropriately rated fuses into existing larger fuse clips. This capability is critical for preventing overfusing, a common cause of equipment damage and potential fire hazards. Overfusing occurs when a fuse with a higher current rating than the circuit's design capacity is installed. This can lead to excessive current flow, overheating of conductors, and failure of sensitive electronic components. The Littelfuse LRU-213 fuse reducer provides a straightforward and reliable solution to this problem. By enabling the use of a correctly sized fuse, it ensures that the circuit protection system operates as intended, safeguarding valuable equipment and personnel. Key benefits of utilizing Littelfuse LRU fuse reducers include: * **Enhanced Safety:** Prevents overcurrent situations by facilitating the use of correctly rated fuses, thereby reducing the risk of electrical fires and equipment damage. * **Cost-Effectiveness:** Avoids the need for costly replacement of existing fuse holders or entire electrical panels when a lower-rated fuse is required. * **Simplified Upgrades and Maintenance:** Streamlines the process of adapting existing infrastructure to new or updated circuit protection requirements. * **Compliance:** Helps maintain adherence to electrical codes and safety standards that mandate appropriate circuit protection. Manufactured by Littelfuse, a globally recognized leader in circuit protection solutions, the LRU Series reducers benefit from decades of expertise and a commitment to quality. Littelfuse products are known for their durability, reliability, and performance in demanding industrial environments. The LRU-213 is designed to withstand the rigors of continuous operation, offering peace of mind to engineers and maintenance professionals. Whether you are performing routine maintenance, upgrading systems, or troubleshooting circuit protection issues, the Littelfuse LRU-213 fuse reducer is a vital tool for maintaining the integrity and safety of your electrical installations. Its simple yet effective design ensures easy installation and long-term dependable service, making it an indispensable accessory for any professional managing electrical systems.
  • Allows installation of smaller fuses into existing larger fuse clips.
  • Effectively prevents overfusing and potential circuit damage.
  • Ensures proper and reliable circuit protection.
  • Simplifies fuse upgrades and maintenance procedures.
  • Manufactured by Littelfuse, a trusted leader in circuit protection.

Specifications

Application
Industrial
Brand Name
Littelfuse
Special Features
Simple Installation
Standard
UL Listed CSA Certified
Sub Brand
LRUR Series
Type
Fuse Reducer
For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

LRU-2661R

For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.
For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

LRU-626R

For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.
Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.

LRUJ13

Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.
Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.

LRU-2621

Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.
Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.

LRU-663

Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.
For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

LRU-263R

For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.
Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.

LRU-263

Littelfuse® fuse reducers allow smaller size fuses to be installed into existing fuse clips to prevent overfusing.
For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

LRU-616R

For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.
Box cover units provide an economical method of protecting small motors against overcurrent damage. For use with Edison-Base plug fuses (TOO, TLO) or Type S plug fuses (SOO, SLO) with adapters (SAO).

LSCY

Box cover units provide an economical method of protecting small motors against overcurrent damage. For use with Edison-Base plug fuses (TOO, TLO) or Type S plug fuses (SOO, SLO) with adapters (SAO).
For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

LRU-226R

For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.
For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

LRU-213R

For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.
For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

LRU-663R

For use with Littelfuse FLNR_ID/FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses.

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.