Littelfuse KLKR030 - KLKR030 is a Class CC fuse with an ampere rating of 30.
Littelfuse

KLKR030

Alternate Item Number: KLKR030.T

UPC: 079458260731

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Overview

The **Littelfuse KLKR030 Class CC fuse** is a high-performance overcurrent protection solution engineered for demanding industrial environments. Designed with a **30-ampere rating**, this fuse delivers precise and reliable circuit protection in power distribution systems, motor control circuits, and other critical applications where uptime and safety are paramount. Part of Littelfuse’s trusted KLKR series, the KLKR030 combines robust construction with industry-leading performance to safeguard electrical systems against overloads, short circuits, and faults while minimizing unplanned downtime. Class CC fuses are widely recognized in industrial and commercial settings for their compact size, high interrupting rating, and fast-acting response—making them ideal for protecting sensitive equipment and machinery. The KLKR030 is UL 248 Listed and meets stringent safety standards, ensuring compliance with NEC (National Electrical Code) and OSHA regulations. Its **30A rating** makes it particularly well-suited for applications such as motor starters, transformers, panelboards, and branch circuit protection in facilities like manufacturing plants, data centers, and renewable energy installations. **Key Features and Benefits:** - **High Interrupting Rating:** The KLKR030 offers superior fault current interruption, reducing the risk of catastrophic equipment damage during short circuits. This is critical in industrial environments where high fault currents are common. - **Fast-Acting Response:** Engineered for rapid response to overcurrent conditions, the KLKR030 helps prevent damage to downstream components, extending the lifespan of motors, drives, and other sensitive electronics. - **Compact and Space-Efficient:** Class CC fuses are smaller than traditional fuses, allowing for more efficient panel designs and easier installation in tight spaces—a valuable feature in modern electrical enclosures. - **Reliable Performance:** Littelfuse’s KLKR series is built to withstand harsh industrial conditions, including vibration, temperature fluctuations, and electrical stress, ensuring consistent protection over time. - **Easy Installation and Replacement:** Designed for compatibility with standard Class CC fuse holders, the KLKR030 simplifies maintenance and reduces downtime during fuse replacement. **Industry Applications:** The KLKR030 is a versatile solution for a wide range of industrial applications, including: - **Motor Control Circuits:** Protects motors from overloads and short circuits, preventing costly failures in HVAC systems, conveyors, and pumps. - **Power Distribution Panels:** Safeguards branch circuits in industrial control panels, switchgear, and distribution boards. - **Renewable Energy Systems:** Ideal for protecting inverters, battery banks, and solar/wind power distribution systems. - **Machine Tools and Automation:** Ensures reliable operation in CNC machines, robotics, and automated manufacturing lines. - **Commercial Buildings:** Used in lighting panels, HVAC systems, and other critical electrical infrastructure to meet code requirements and enhance safety. **Why Choose Littelfuse KLKR030?** Littelfuse is a global leader in circuit protection, with over a century of innovation and expertise in electrical safety solutions. The KLKR series, including the KLKR030, reflects the company’s commitment to quality, reliability, and performance. Engineers and technicians trust Littelfuse for its rigorous testing, adherence to industry standards, and comprehensive product support. Whether you’re designing a new system or upgrading existing infrastructure, the KLKR030 provides a dependable, cost-effective solution for overcurrent protection in the most demanding environments. **Installation and Maintenance Considerations:** Proper installation is critical to ensuring the KLKR030 operates as intended. Always follow manufacturer guidelines and local electrical codes when selecting and installing fuses. The KLKR030 is designed for use in Class CC fuse holders, and care should be taken to ensure compatibility with the application’s voltage and current requirements. Regular inspections and adherence to recommended maintenance schedules will help maintain optimal performance and extend the life of the fuse. For professionals seeking a trusted, high-performance Class CC fuse, the **Littelfuse KLKR030** delivers unmatched protection, reliability, and peace of mind in industrial and commercial electrical systems.
  • 30A Class CC fuse for industrial overcurrent protection
  • High interrupting rating for superior fault current interruption
  • Fast-acting response to prevent equipment damage
  • Compact design for efficient panel installations
  • UL 248 Listed and compliant with NEC/OSHA standards

Specifications

Amperage Rating
30 AMP
Application
control circuits
Brand Name
Littelfuse
Current Rating
30 A
Series
KLKR
Special Features
Fast-Acting
Standard
Supplemental Protection
Sub Brand
POWR-GARD KLK Series
Type
UL Supplemental
Package Weight (Imperial)
0.019 L
Package Weight (Metric)
0.009 kg
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
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
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.