Littelfuse KLKR003 - KLKR003 is a Class CC fuse with an ampere rating of 3.
Littelfuse

KLKR003

Alternate Item Number: KLKR003.T

UPC: 079458260472


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Overview

The Littelfuse KLKR003 is a high-performance Class CC fuse engineered to provide robust and reliable overcurrent protection for critical industrial electrical systems. As a vital component in safeguarding sensitive equipment, this 3 Ampere (3A) fuse is designed to meticulously interrupt electrical circuits when fault currents exceed safe operating levels, thereby preventing damage, reducing downtime, and enhancing operational safety. Littelfuse, a globally recognized leader in circuit protection solutions, brings its extensive expertise and commitment to quality to the KLKR003. This fuse exemplifies their dedication to producing components that meet and exceed stringent industry standards. The Class CC designation signifies a specific set of performance characteristics, including a high interrupting rating and a rejection feature that prevents the use of incorrect fuse classes, ensuring that only compatible fuses can be installed in the corresponding fuseholder. This feature is paramount in industrial settings where incorrect fuse installations can lead to catastrophic failures. The KLKR003 is particularly well-suited for a diverse range of industrial applications. Its precise 3A rating makes it ideal for protecting smaller motor circuits, control circuits, lighting systems, and other loads where accurate overcurrent protection is essential without unnecessarily tripping during normal operation. Industries that commonly rely on fuses like the KLKR003 include manufacturing plants, processing facilities, automation systems, and commercial buildings where the integrity of electrical infrastructure is non-negotiable. Key benefits and features of the Littelfuse KLKR003 include: * **Reliable Overcurrent Protection:** Effectively interrupts fault currents to protect downstream equipment. * **Class CC Designation:** Ensures proper application and compatibility with Class CC fuseholders, preventing misapplication. * **3 Ampere Rating:** Precisely calibrated for loads requiring specific current protection. * **High Interrupting Rating:** Designed to safely clear high fault currents, a critical safety feature in industrial environments. * **Durable Construction:** Built with quality materials to withstand the demanding conditions often found in industrial settings. * **Compact Size:** Facilitates easy integration into control panels and electrical enclosures. When selecting fuses for industrial applications, professionals prioritize factors such as interrupting rating, voltage rating, current rating, and agency approvals. The KLKR003 from Littelfuse consistently delivers on these critical parameters. Its robust construction ensures longevity and dependable performance, even in environments with fluctuating power conditions or significant electrical stress. By choosing the KLKR003, engineers and maintenance personnel can be confident in the protection offered to their valuable electrical assets, minimizing the risk of costly repairs and production interruptions. Trust the Littelfuse KLKR003 for uncompromising circuit protection.
  • Littelfuse KLKR003 Class CC fuse
  • 3 Ampere (3A) current rating
  • Designed for reliable industrial circuit protection
  • High interrupting rating for safety
  • Ensures dependable overcurrent protection for sensitive equipment

Specifications

Application
General Purpose
Brand Name
Littelfuse
Current Rating
3 A
Special Features
Fast-Acting
Standard
248-4 UL Listed/CSA
Sub Brand
KLKR Series
Type
Class CC
Package Weight (Imperial)
0.017 L
Package Weight (Metric)
7.500 g
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.
9F61 Size B Clips 1.6in

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9F61 Size B Clips 1.6in

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.