Littelfuse 0ATO003.MXGLO - FUSE - ATO SMARTGLOW 12VDC 3A 1000 PC. The ATO® Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. Smart Glow fuses are innovative automotive style fuses (ATO, Mini, Maxi and glass tube) that feature an indicator light that glows when the fuse is blown, saving time to troubleshoot an open circuit.
Littelfuse

0ATO003.MXGLO

UPC: 819562004032

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Minimum Qty: 1000

Multiplier: 1000

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Overview

The **Littelfuse ATO SmartGlow Fuse (SKU: 0ATO003.MXGLO)** represents a breakthrough in automotive and industrial circuit protection, combining patented innovation with trusted reliability. Originally designed and patented by Littelfuse in 1976, the ATO series has set the global standard for automotive fuses, ensuring consistent performance across millions of vehicles and industrial systems worldwide. This **12VDC 3A SmartGlow fuse** enhances traditional circuit protection with an integrated indicator light that illuminates when the fuse is blown, enabling technicians to diagnose open circuits instantly without the need for multimeter testing or visual inspection of the fuse element. Engineered for precision and durability, the **ATO SmartGlow fuse** features industry-standard color coding for quick amperage identification, allowing for effortless selection and replacement in high-pressure environments. The **3A current rating** makes it ideal for protecting sensitive electronics, lighting circuits, and auxiliary systems in automotive, marine, RV, agricultural, and light industrial applications. Unlike conventional fuses, the SmartGlow technology eliminates guesswork during troubleshooting, significantly reducing diagnostic time and improving system uptime—critical in mission-critical applications such as emergency vehicles, construction equipment, and off-highway machinery. **Key Features & Benefits:** - **Instant Visual Diagnostics:** The built-in LED indicator glows red when the fuse is blown, providing immediate confirmation of circuit failure without tools or additional testing equipment. - **Industry-Standard ATO Design:** Compatible with all standard ATO fuse holders, ensuring seamless integration into existing electrical systems across automotive and industrial platforms. - **Color-Coded for Safety:** Amperage ratings are clearly marked using the globally recognized ATO color scheme, reducing the risk of misapplication and enhancing operational safety. - **12VDC Rated for Versatility:** Suitable for 12-volt DC systems, including passenger vehicles, commercial trucks, marine vessels, and off-road equipment, where reliable circuit protection is essential. - **Patented Littelfuse Quality:** Backed by decades of innovation and rigorous testing, Littelfuse fuses are trusted by OEMs and aftermarket professionals worldwide for their consistent performance and long service life. **Typical Applications:** The **Littelfuse ATO SmartGlow 3A fuse** is widely used in automotive electrical systems, including headlight circuits, power windows, audio systems, and control modules. In marine environments, it protects navigation lights, bilge pumps, and battery charging systems. Industrial applications include control panels, PLC systems, and low-power machinery where 12VDC operation is standard. Its compact ATO form factor makes it a preferred choice for tight spaces, such as fuse blocks in dashboards, engine compartments, and auxiliary control centers. **Installation & Compatibility:** Designed for drop-in replacement in standard ATO fuse sockets, the SmartGlow fuse requires no special tools or modifications. Professionals appreciate its plug-and-play functionality, which streamlines maintenance and reduces downtime. When selecting a fuse, always match the amperage rating to the circuit’s load requirements to prevent nuisance blowing or inadequate protection. Littelfuse provides comprehensive technical documentation and support to ensure correct application across diverse use cases. **Why Choose Littelfuse?** As the inventor of the ATO fuse, Littelfuse has pioneered circuit protection technology for over 70 years. Their fuses are engineered to meet or exceed stringent automotive and industrial standards, including SAE, ISO, and UL certifications. The **SmartGlow series** exemplifies this legacy by combining advanced diagnostics with time-tested reliability, making it an indispensable tool for electricians, mechanics, and system integrators who demand precision and efficiency. Whether for OEM applications or aftermarket upgrades, the **Littelfuse ATO SmartGlow 3A fuse** delivers unmatched performance, safety, and peace of mind.
  • 12VDC, 3A rated ATO SmartGlow fuse with built-in blown indicator LED
  • Industry-standard color coding for quick amperage identification
  • Instant visual diagnostics eliminates multimeter testing for open circuits
  • Compatible with all standard ATO fuse holders and sockets
  • Patented Littelfuse quality trusted by OEMs and professionals worldwide

Specifications

Amperage Rating
3 A
Application
Automotive
Brand Name
Littelfuse
Color
Red
Connection Type
Blade
Current Rating
3 A
Material
Plastic
Mounting Type
Plug-in
Series
ATO SmartGlow
Size
ATO
Sub Brand
ATO Fuses
Voltage Rating
12 VDC
FUSE - ATO SMARTGLOW 12VDC 15A 1000 P. The ATO® Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. Smart Glow fuses are innovative automotive style fuses (ATO, Mini, Maxi and glass tube) that feature an indicator light that glows when the fuse is blown, saving time to troubleshoot an open circuit.

0ATO015.MXGLO

FUSE - ATO SMARTGLOW 12VDC 15A 1000 P. The ATO® Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. Smart Glow fuses are innovative automotive style fuses (ATO, Mini, Maxi and glass tube) that feature an indicator light that glows when the fuse is blown, saving time to troubleshoot an open circuit.
AUTOMO MINI BLADE TYPE 3000-PACK 2A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.

0297002.WXNV

AUTOMO MINI BLADE TYPE 3000-PACK 2A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.
AUTOMO MINI BLADE TYPE 3000-PACK 15A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.

0297015.WXNV

AUTOMO MINI BLADE TYPE 3000-PACK 15A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.
FAST-ACTING AUTOMO BLADE L-PACK 25A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.

0287025.L

FAST-ACTING AUTOMO BLADE L-PACK 25A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.
FUSE - ATO SMARTGLOW 12VDC 5A 1000 PC. The ATO® Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. Smart Glow fuses are innovative automotive style fuses (ATO, Mini, Maxi and glass tube) that feature an indicator light that glows when the fuse is blown, saving time to troubleshoot an open circuit.

0ATO005.MXGLO

FUSE - ATO SMARTGLOW 12VDC 5A 1000 PC. The ATO® Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. Smart Glow fuses are innovative automotive style fuses (ATO, Mini, Maxi and glass tube) that feature an indicator light that glows when the fuse is blown, saving time to troubleshoot an open circuit.
AUTOMO MINI FAST-ACTING BLADE 3A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.

MIN003

AUTOMO MINI FAST-ACTING BLADE 3A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.
SMARTGLOW MINI BLADE BOX 3A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.

0MIN003.VXGLO

SMARTGLOW MINI BLADE BOX 3A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.
FUSE - ATO SMARTGLOW 12VDC 7.5A 100 PC. The ATO® Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. Smart Glow fuses are innovative automotive style fuses (ATO, Mini, Maxi and glass tube) that feature an indicator light that glows when the fuse is blown, saving time to troubleshoot an open circuit.

0ATO07.5HXGLO

FUSE - ATO SMARTGLOW 12VDC 7.5A 100 PC. The ATO® Fuse was designed and patented by Littelfuse in 1976 and set the standard for automotive circuit protection. It features industry standard color coding to indicate amperage rating. Smart Glow fuses are innovative automotive style fuses (ATO, Mini, Maxi and glass tube) that feature an indicator light that glows when the fuse is blown, saving time to troubleshoot an open circuit.
AUTOMO MINI BLADE TYPE 50-PACK 3A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.

0297003.L

AUTOMO MINI BLADE TYPE 50-PACK 3A. The MINI® Fuse is quickly becoming the new standard for vehicle circuit protection throughout the world. Its miniature design, patented by Littelfuse, meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI® Fuse the recommended choice for protection.
FAST-ACTING AUTOMO BLADE L-PACK 3A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.

0287003.L

FAST-ACTING AUTOMO BLADE L-PACK 3A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.
FAST-ACTING AUTOMO BLADE U-PACK 3A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.

0287003.U

FAST-ACTING AUTOMO BLADE U-PACK 3A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.
FAST-ACTING AUTOMO BLADE P-PACK 3A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.

0287003.PXCN

FAST-ACTING AUTOMO BLADE P-PACK 3A. Developed by Littelfuse for the automotive industry, the ATOF® fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications.

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.