Littelfuse LMF008U - Perfect for use in lighting systems, this 300 VAC time delay fuse is designed to handle ballast transformer in-rush currents.
Littelfuse

LMF008U

Alternate Item Number: 0LMF008.U

UPC: 079458947717

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BrochureTechnical BulletinSpecification Sheet

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Minimum Qty: 500

Multiplier: 500

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Overview

The **Littelfuse LMF008U** is a high-performance **300 VAC time delay fuse** engineered specifically for **lighting systems**, including those with ballast transformers. This fuse is a critical component for professionals who demand **reliable overcurrent protection** without the risk of nuisance tripping during startup conditions. Built to withstand the unique challenges of **industrial and commercial lighting applications**, the LMF008U ensures long-term durability and consistent performance in demanding environments. **Key Features and Benefits:** - **Time Delay Technology:** The LMF008U is designed with a **time delay feature** that allows it to tolerate brief in-rush currents typical of ballast transformers, preventing unnecessary interruptions while still providing robust protection against sustained overcurrent conditions. - **300 VAC Rating:** With a **300 VAC rating**, this fuse is ideal for use in high-voltage lighting systems, including fluorescent, HID, and LED fixtures where ballasts are commonly used. - **Precision Engineering:** Manufactured by **Littelfuse**, a global leader in circuit protection, the LMF008U is built to meet rigorous industry standards, ensuring **consistent performance** and **extended service life** in critical applications. - **Versatile Applications:** Suitable for a wide range of **lighting systems**, including commercial buildings, industrial facilities, parking lots, and outdoor lighting installations where ballast transformers are prevalent. - **Easy Installation:** Designed for compatibility with standard fuse holders, the LMF008U simplifies installation and replacement, reducing downtime and maintenance costs for facility managers and electricians. **Why Choose Littelfuse for Lighting Protection?** Littelfuse is a trusted name in **circuit protection**, with decades of experience delivering solutions that enhance the reliability and safety of electrical systems. The **LMF008U** is part of Littelfuse’s extensive portfolio of **time delay fuses**, designed to address the specific needs of lighting professionals. Whether you’re retrofitting an existing system or designing a new installation, the LMF008U provides the **protection and peace of mind** you need. **Industry Applications:** - **Commercial Lighting:** Offices, retail spaces, and hospitality venues rely on stable lighting systems, and the LMF008U ensures protection against faults without disrupting operations. - **Industrial Facilities:** Warehouses, manufacturing plants, and outdoor industrial sites use high-intensity lighting, where the LMF008U’s time delay feature prevents unnecessary fuse replacements. - **Outdoor Lighting:** Streetlights, parking lot fixtures, and security lighting systems benefit from the LMF008U’s ability to handle transient in-rush currents while maintaining protection against overloads. **Installation and Maintenance Tips:** When installing the **Littelfuse LMF008U**, ensure compatibility with your system’s voltage and current requirements. Always follow **electrical safety protocols**, including de-energizing the circuit before replacement. Regular inspections of the fuse and associated components can help identify potential issues before they lead to system failures. For optimal performance, pair the LMF008U with other Littelfuse products to create a **comprehensive circuit protection strategy** tailored to your lighting system’s needs. **Trust Littelfuse for Unmatched Protection** With a reputation for innovation and reliability, Littelfuse delivers fuses that professionals can depend on. The **LMF008U** is more than just a fuse—it’s a **solution** designed to protect your lighting systems from the challenges of in-rush currents and overcurrent conditions. Choose Littelfuse for **industry-leading circuit protection** that keeps your operations running smoothly.
  • 300 VAC time delay fuse designed for lighting systems with ballast transformers
  • Handles in-rush currents to prevent nuisance tripping during startup
  • Built for industrial and commercial lighting applications
  • Manufactured by Littelfuse, a leader in circuit protection
  • Easy installation with standard fuse holders

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

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.