Littelfuse 02800004 - ACS MICRO FUSE HLDR 4A. Thru-hole circuit board mount blocks designed for Littelfuse MICRO™/ TR3 type and other fuse series with .025” diameter leads rated to 5 amps. Rated at 5A / 1.6W to 125 volts. PC Board Thru-Hole @ 5.08 hole spacing.
Littelfuse

02800004

Alternate Item Number: 02800004Z

UPC: 079458941296


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Overview

The Littelfuse ACS Micro Fuse Holder (SKU: 02800004) is a precision thru-hole PCB mount designed for Littelfuse MICRO™/TR3 type fuses and other .025" diameter lead fuses rated up to 5 amps. Rated at 4A and 125V with a maximum power dissipation of 1.6W, this fuse holder provides reliable overcurrent protection for critical electronic circuits in industrial, automotive, and general electronic equipment. Key specifications include: - Voltage Rating: 125V - Current Rating: 4A (compatible with fuses rated up to 5A) - Mounting Type: PC Board Thru-Hole - Hole Spacing: 5.08mm - Lead Diameter Compatibility: .025" - Series Compatibility: Littelfuse MICRO™/TR3 and other fuse series with .025" leads Engineered for durability and electrical insulation, the plastic construction safeguards sensitive components from overcurrent conditions and potential damage. The compact design and robust construction make it ideal for applications requiring dependable current management, including control panels, power supplies, and specialized electronic devices. Manufactured by Littelfuse, a global leader in circuit protection technology, this fuse holder ensures optimal safety and performance in electrical systems. Its thru-hole mounting design simplifies PCB integration, reducing assembly time and improving reliability. Whether used in high-reliability industrial applications or compact automotive electronics, the Littelfuse ACS Micro Fuse Holder 4A provides essential circuit protection with a proven track record of dependable operation.
  • Thru-hole PCB mount for MICRO™/TR3 type fuses and .025" diameter leads
  • Rated at 4A and 125V with 1.6W maximum power dissipation
  • 5.08mm hole spacing for precise PCB integration
  • Compatible with Littelfuse MICRO™/TR3 fuse series
  • Plastic construction for electrical insulation and durability

Specifications

Brand Name
Littelfuse
Connection Type
Thru-hole
Current Rating
4 A
Material
Plastic
Mounting Type
PCB Thru-Hole
Series
ACS Micro Fuse Holder
Special Features
For LT-5 Fuses
Sub Brand
280 Series
Type
PC Board Mount
Voltage Rating
125 V
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02800031

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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.