Littelfuse JLLS200 - JLLS200 is a Class T fuse with an ampere rating of 200 and knife-blade-style construction.
Littelfuse

JLLS200

Alternate Item Number: JLLS200.X

UPC: 079458190885


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Overview

The Littelfuse JLLS200 Class T fuse is a high-performance industrial protection solution engineered for demanding applications requiring reliable overcurrent and short-circuit protection. Designed with a 200 ampere rating and knife-blade-style construction, this fuse delivers robust performance in power distribution systems, motor control circuits, and industrial machinery where operational safety and equipment integrity are critical. As part of Littelfuse’s trusted Class T fuse series, the JLLS200 combines fast-acting response with high interrupting capacity, ensuring rapid fault isolation to prevent costly equipment damage and unplanned downtime. Class T fuses are widely recognized in industrial environments for their compact size, high performance, and compliance with stringent safety standards. The knife-blade connection design of the JLLS200 ensures a secure, low-resistance interface with bus bars and fuse blocks, minimizing heat generation and enhancing system reliability. This construction also facilitates easy installation and maintenance, reducing labor costs and improving operational efficiency in high-demand settings such as manufacturing plants, commercial facilities, and utility substations. Key applications for the JLLS200 include: - Motor control centers and variable frequency drives (VFDs) - Power distribution panels and switchgear - Industrial control systems and automation equipment - Renewable energy systems and solar inverters - Commercial and institutional electrical infrastructure Engineered for harsh industrial environments, the JLLS200 is built to withstand high fault currents while maintaining consistent performance across a wide range of operating conditions. Its Class T designation indicates compliance with UL 248 standards and the ability to interrupt high fault currents efficiently, making it ideal for protecting sensitive and high-value equipment. With Littelfuse’s reputation for quality and innovation in electrical protection, the JLLS200 is a preferred choice among engineers, electricians, and facility managers seeking dependable, long-lasting circuit protection. Littelfuse, a global leader in circuit protection solutions, has been delivering trusted products for over a century. The company’s Class T fuse line is trusted across industries for its durability, precision, and adherence to safety certifications. By integrating the JLLS200 into your electrical system, you gain not only superior protection but also peace of mind knowing your infrastructure is safeguarded by a brand synonymous with reliability and technical excellence.
  • 200A ampere rating with knife-blade construction for secure, low-resistance connections
  • High interrupting capacity for reliable protection against short circuits and overloads
  • Class T compliance (UL 248) ensures adherence to strict industrial safety standards
  • Compact design optimizes space in power distribution panels and switchgear
  • Engineered for harsh environments with durable construction and fast-acting response

Specifications

Amperage Rating
200 Amperes
Application
Variable Speed Drives
Brand Name
Littelfuse
Special Features
Fast-Acting
Standard
UL Listed CSA Certified
Sub Brand
POWR-GARD JLLS Series
Type
Class T
Package Weight (Imperial)
0.210 L
Package Weight (Metric)
0.095 kg
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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.