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Minimum Qty: 5
Multiplier: 5
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Overview
- 25A fast-acting MINI Blade Fuse for automotive circuit protection
- Patented miniature design for space-efficient installation
- High-temperature resilience for under-hood and adverse environments
- Blade connection type compatible with standard automotive fuse blocks
- Available in 50-pack, 500-pack, and 3000-pack configurations
Specifications
Amperage Rating | 25 A |
Application | Automotive |
Brand Name | Littelfuse |
Standard | UL 248 Special Purpose Fuses |
Sub Brand | MINI Series |

ATO025
FAST-ACTING AUTOMOTIVE BLADE FUSE 25A. 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.287 Series replaces 257 Series.Frequently Asked Questions
What types of fuses does Littelfuse offer?
Littelfuse offers UL Class fuses, high-speed fuses, medium voltage fuses, 10 x 38 mm fuses, and solar fuses.
What are the voltage and current ratings for 10 x 38 mm fuses?
10 x 38 mm fuses have ratings from 125 to 1000 volts and 1/10 to 30 amperes.
What is the maximum voltage for Littelfuse solar fuses?
Littelfuse offers solar fuses and holders rated up to 1500 Vdc.
What is the Industrial Shock-Block® GFCI designed for?
It is a permanently connected special-purpose GFCI designed for people protection in industrial facilities, meeting UL Standard 943C Class C and Class D.
How do Trailing-Cable Protection Relays work?
They continuously monitor the integrity of the ground conductor in portable cables to protect cable-fed equipment from hazardous voltages caused by ground faults.
What is the function of Arc-Flash Protection Relays?
These relays detect a developing arc-flash incident and send a trip signal to interrupt power before significant damage occurs.
Where can customers find technical support for Littelfuse products?
Technical support is available via phone at +1-800-TEC-FUSE (800-832-3873) in the US & Canada, or by email at [email protected].
How can distributors check product availability and pricing?
Distributors can access the Littelfuse Business Center at LittelfuseBusinessCenter.com to look up product availability, pricing, and place orders.
What applications are 10 x 38 mm fuses suitable for?
They provide compact supplemental protection for a wide variety of applications, available in time-delay, fast-acting, board mount, or solar versions.
What is the purpose of POWR-BLOKS power distribution blocks?
POWR-BLOKS offer a safe and convenient way to splice cables and manage power distribution requirements within panels and systems.
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.