Littelfuse KLKR020 - KLKR020 is a Class CC fuse with an ampere rating of 20.
Littelfuse

KLKR020

Alternate Item Number: KLKR020.T

UPC: 079458260717


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Overview

The Littelfuse KLKR020 is a high-performance Class CC fuse engineered to deliver precise overcurrent protection in industrial environments. Designed with a 20A current rating, this fuse is part of the KLKR series, offering a robust solution for critical power distribution systems, motor control circuits, and other high-demand applications. Class CC fuses are widely recognized for their compact size, high interrupting rating, and compatibility with modern industrial equipment, making them a preferred choice for engineers and technicians seeking reliable circuit protection. Littelfuse, a global leader in electrical safety components, has developed the KLKR020 to meet the rigorous demands of industrial applications. Its construction ensures fast response times to overcurrent conditions, minimizing damage to sensitive equipment and reducing downtime. The fuse’s precise current interruption capabilities are complemented by its durable design, which withstands harsh operating conditions, including vibration, temperature fluctuations, and electrical stress. This reliability is essential in industries such as manufacturing, automation, renewable energy, and transportation, where consistent performance is non-negotiable. Selecting the right fuse for an application involves considering factors such as voltage rating, interrupting capacity, and physical dimensions. The KLKR020 is rated for 600V AC/DC, making it suitable for a wide range of industrial systems. Its Class CC designation ensures compatibility with standard fuse blocks and panels, simplifying installation and replacement. Professionals in the field trust Littelfuse for its commitment to quality, innovation, and safety, as evidenced by its extensive portfolio of circuit protection solutions. In motor control circuits, the KLKR020 provides essential protection against overloads and short circuits, safeguarding motors and associated components from costly failures. In power distribution systems, it helps maintain the integrity of the electrical network by isolating faults quickly and efficiently. The fuse’s high interrupting rating (typically 200kA) ensures it can handle extreme fault currents without compromising performance, a critical feature in industrial settings where electrical faults can pose significant risks. Installation of the KLKR020 is straightforward, thanks to its standardized Class CC design. It can be mounted in compatible fuse holders or panels, and its compact form factor allows for efficient use of space in control cabinets and distribution boards. Regular inspection and replacement of fuses are essential to maintaining system reliability, and the KLKR020’s clear indication of operation (blown or intact) simplifies maintenance tasks. Littelfuse’s reputation for excellence in electrical safety is built on decades of innovation and customer trust. The KLKR020 is a testament to this legacy, offering a blend of performance, durability, and ease of use. Whether you’re protecting a motor drive, a control panel, or a renewable energy system, the KLKR020 delivers the reliability and precision required to keep operations running smoothly. For engineers and technicians seeking a dependable Class CC fuse, the Littelfuse KLKR020 is an ideal choice, combining industry-leading technology with the trusted quality of a global leader in circuit protection.
  • 20A current rating for precise overcurrent protection
  • Class CC design for compatibility with industrial fuse blocks
  • 600V AC/DC rating for versatile application use
  • High interrupting rating (200kA) for extreme fault current handling
  • Compact and durable construction for harsh industrial environments

Specifications

Application
General Purpose
Brand Name
Littelfuse
Color
Blue
Connection Type
Screw Terminal
Current Rating
20 A
Material
Ceramic/Poly
Mounting Type
Fuse Holder/Class CC Panel
Series
KLKR
Size
Class CC
Special Features
Fast-Acting
Standard
248-4 UL Listed/CSA
Sub Brand
KLKR Series
Type
Class CC
Voltage Rating
600 V AC/DC
Package Weight (Imperial)
0.020 L
Package Weight (Metric)
9.000 g
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9F61 Size B Clips 1.6in

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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.

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.