Littelfuse LMF003HXL - Perfect for use in lighting systems, this 300 VAC time delay fuse is designed to handle ballast transformer in-rush currents.
Littelfuse

LMF003HXL

Alternate Item Number: 0LMF003.HXL

UPC: 079458946451


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Overview

The **Littelfuse LMF003HXL** is a high-performance **300VAC time delay fuse** engineered to protect lighting systems from damaging in-rush currents generated by ballast transformers. Designed for industrial and commercial applications, this fuse combines precision time-delay characteristics with robust construction to ensure reliable operation in critical electrical environments. Unlike standard fuses, the LMF003HXL is specifically optimized to handle the transient surges associated with fluorescent, HID, and LED ballast systems, preventing nuisance tripping while maintaining robust short-circuit protection. Time delay fuses like the LMF003HXL are essential in lighting applications where inductive loads—such as magnetic ballasts—create high in-rush currents during startup. These currents can be 10 to 20 times the normal operating current, posing a risk of premature fuse failure or system downtime. The LMF003HXL’s time-delay design allows it to tolerate these brief surges without interrupting power, ensuring continuous operation while still providing reliable overcurrent protection. This makes it ideal for use in: - **Commercial lighting systems** (offices, retail stores, warehouses) - **Industrial facilities** (manufacturing plants, distribution centers) - **Outdoor and street lighting** (municipal, parking lots, roadway illumination) - **High-bay and warehouse lighting** (LED, fluorescent, HID) - **Emergency and exit lighting systems** The **Littelfuse LMF003HXL** is built to meet the demands of harsh operating conditions. Its **300VAC rating** ensures compatibility with high-voltage lighting circuits, while its **time-delay feature** provides the necessary coordination to avoid false trips during normal transient events. This fuse is particularly well-suited for applications where reliability and uptime are critical, such as in healthcare facilities, data centers, and manufacturing floors where lighting failures can disrupt operations. Installation is straightforward, with the LMF003HXL designed to fit standard fuse holders and panels. Professionals in electrical contracting, maintenance, and design should select this fuse when specifying protection for new lighting systems or retrofitting existing ones. Littelfuse’s reputation for quality and innovation in circuit protection ensures that the LMF003HXL delivers consistent performance, reducing maintenance costs and minimizing unplanned downtime. As part of Littelfuse’s comprehensive line of industrial fuses, the LMF003HXL reflects the company’s commitment to safety, reliability, and engineering excellence. With decades of experience in circuit protection, Littelfuse provides not only high-quality components but also technical support and application guidance to help engineers and electricians make informed decisions. Whether you’re protecting a single fixture or an entire facility, the LMF003HXL offers the peace of mind that comes from using a trusted, industry-leading solution for ballast transformer in-rush current protection.
  • 300VAC rating for high-voltage lighting circuits
  • Time delay design tolerates ballast in-rush currents
  • Prevents nuisance tripping in fluorescent, HID, and LED systems
  • Robust construction for industrial and commercial environments
  • Compatible with standard fuse holders and panels

Specifications

Application
fluorescent Lighting
Brand Name
Littelfuse
Special Features
Fast-Acting
Standard
Standard 248-14 UL Listed/CSA
Sub Brand
POWR-GARD LMF Series
Type
InLine Fuse
Voltage Rating
300 VAC
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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

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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.