Littelfuse KLKR009S - KLKR series Class CC fuses are fast-acting fuses intended for general-purpose branch circuit protection. Their compact size, fast-acting overload response, and their highly current limiting design make them ideal for use in OEM equipment and control panels because Solid-state devices such as SCRs and other electronic equipment generally require fast-acting protection.
Littelfuse

KLKR009S

Alternate Item Number: KLKR009.TS

UPC: 079458190137

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Overview

The Littelfuse KLKR009S, a distinguished member of the KLKR series, represents a pinnacle of fast-acting fuse technology specifically engineered for robust branch circuit protection in demanding industrial environments. This compact yet powerful fuse is meticulously designed to safeguard sensitive electronic components and general-purpose circuits within Original Equipment Manufacturer (OEM) equipment and intricate control panels. Its primary function is to provide rapid and reliable interruption of fault currents, thereby preventing catastrophic damage to valuable machinery and ensuring operational continuity. The KLKR009S is characterized by its exceptional fast-acting overload response, a critical attribute when protecting solid-state devices such as Silicon Controlled Rectifiers (SCRs), Variable Frequency Drives (VFDs), and other advanced electronic equipment. These components are inherently susceptible to rapid current surges and overloads, and the KLKR009S's swift reaction time is paramount in mitigating such risks. Furthermore, its highly current-limiting design significantly reduces the potential let-through energy during a fault event, offering a superior level of protection compared to standard fuses. Key advantages of integrating the Littelfuse KLKR009S into your systems include: * **Superior Protection for Sensitive Electronics:** Its fast-acting nature and current-limiting capabilities are ideal for safeguarding delicate semiconductor devices. * **Compact Form Factor:** The Class CC designation signifies a smaller physical footprint, allowing for space-efficient integration into densely populated control panels and OEM enclosures. * **Broad Application Versatility:** Suitable for a wide array of industrial applications, including motor control, power supplies, HVAC systems, and general industrial machinery. * **Enhanced Reliability:** Littelfuse is a globally recognized leader in circuit protection, and the KLKR series embodies their commitment to quality, durability, and performance. * **Simplified Maintenance:** The clear indication of fuse status and ease of replacement contribute to reduced downtime and streamlined maintenance procedures. When selecting fuses for critical applications, professionals prioritize devices that offer predictable performance and robust protection. The Littelfuse KLKR009S meets these demands with its precise engineering and adherence to stringent industry standards. Its application in OEM equipment underscores its suitability for custom-built machinery where reliable and specific protection is a non-negotiable requirement. Control panel designers also benefit from its compact size, enabling them to maximize panel density without compromising safety or performance. The KLKR009S is not merely a protective device; it is an integral component that contributes to the overall longevity and operational integrity of sophisticated industrial systems. Trust in Littelfuse's expertise for your critical circuit protection needs.
  • Fast-acting overload response for rapid fault interruption.
  • Highly current-limiting design minimizes let-through energy.
  • Compact Class CC fuse size ideal for space-constrained applications.
  • Specifically designed for protecting solid-state devices like SCRs.
  • Suitable for general-purpose branch circuit protection in OEM equipment and control panels.

Specifications

Application
General Purpose
Brand Name
Littelfuse
Series
KLKR
Size
Compact (Class CC)
Special Features
Fast-Acting
Standard
248-4 UL Listed/CSA
Sub Brand
KLKR Series
Type
Class CC
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.