Littelfuse FLSR200 - FLSR200 is a Class RK5 fuse with an ampere rating of 200 and knife-blade-style construction.
Littelfuse

FLSR200

Alternate Item Number: FLSR200.X

UPC: 079458170887

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Overview

The **Littelfuse FLSR200** is a high-performance **Class RK5 fuse** engineered for robust industrial circuit protection, featuring a **200A ampere rating** and durable knife-blade-style construction. Designed to meet the rigorous demands of modern power distribution systems, this fuse delivers reliable overcurrent protection in critical applications where downtime is unacceptable. As part of Littelfuse’s industry-leading fuse portfolio, the FLSR200 combines advanced materials, precision engineering, and compliance with stringent safety standards to ensure long-term performance and operational safety. Class RK5 fuses like the FLSR200 are specifically designed for **high-fault current applications**, offering superior interrupting ratings and fast response times to prevent damage to sensitive equipment. The **knife-blade construction** ensures secure, low-resistance connections in compatible fuse blocks, reducing the risk of arcing or loose contacts that could compromise system integrity. With a **200A rating**, this fuse is ideal for protecting heavy-duty industrial machinery, motor control circuits, transformers, and power distribution panels where consistent, dependable protection is essential. **Key Applications & Industries:** - **Motor control centers (MCCs)** – Protects motors from overloads and short circuits in manufacturing plants, HVAC systems, and conveyor systems. - **Power distribution panels** – Safeguards branch circuits in commercial buildings, data centers, and utility substations. - **Industrial machinery** – Used in CNC machines, presses, and robotic systems to prevent catastrophic failures. - **Renewable energy systems** – Provides overcurrent protection in solar inverters and wind turbine controllers. - **OEM equipment** – Integrated into machinery requiring UL/CSA certification for safety compliance. **Why Choose Littelfuse for Class RK5 Fuses?** Littelfuse is a globally recognized leader in circuit protection, with over a century of innovation in fuse technology. The **FLSR200** benefits from Littelfuse’s proprietary **Time-Delay® design**, which allows temporary overloads (e.g., motor startup currents) while still providing fast response to short circuits. This balance of **time-delay and fast-acting performance** minimizes nuisance tripping while ensuring critical protection. Additionally, the fuse’s **high interrupting rating** (typically 200kA) makes it suitable for systems with high prospective fault currents, a common requirement in industrial facilities. **Installation & Compatibility Considerations:** The FLSR200 is designed for use in **Class RK5 fuse blocks and holders**, which are widely available from major electrical equipment manufacturers. Proper sizing and installation are critical—always verify that the fuse’s **ampere rating matches the circuit’s load requirements** and that the fuse block is rated for the fuse type. For applications with **high inrush currents** (e.g., motors, transformers), Littelfuse recommends selecting a fuse with a **time-delay feature** to avoid unnecessary interruptions. Regular inspections should be performed to check for signs of overheating, corrosion, or mechanical damage. **Compliance & Safety:** The FLSR200 meets **UL 248-13 (Class RK5) standards**, ensuring it has been rigorously tested for safety, performance, and reliability. It is also **CSA certified**, making it suitable for use in North American markets. For global applications, Littelfuse offers equivalent fuses that comply with **IEC, VDE, and other international standards**, providing flexibility for multinational projects. **Why Trust Littelfuse?** With a reputation for **quality, innovation, and customer support**, Littelfuse is the preferred choice for engineers and maintenance professionals worldwide. The company’s **application engineering team** provides expert guidance on fuse selection, coordination, and system design, helping customers optimize protection while reducing costs. Whether you’re protecting a single motor or an entire industrial facility, the **Littelfuse FLSR200** delivers the performance, durability, and peace of mind required in today’s high-stakes environments. For dependable circuit protection you can trust, Littelfuse sets the standard.
  • 200A ampere rating for heavy-duty industrial applications
  • Class RK5 design with knife-blade construction for secure connections
  • High interrupting rating (200kA typical) for fault current protection
  • Time-delay feature minimizes nuisance tripping in motor circuits
  • UL 248-13 and CSA certified for North American compliance

Specifications

Application
General Purpose
Brand Name
Littelfuse
Current Rating
200 A
Special Features
Time-Delay
Standard
Standard 248-12 UL Listed/CSA
Sub Brand
POWR-GARD FLSR Series
Type
Class RK5
Package Weight (Imperial)
1.364 L
Package Weight (Metric)
620.000 g
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E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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

9F61BWW460

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.