Hi-Tech® Current-Limiting Fuses

Superior protection in a compact, cost-efficient design that optimizes value, reliability and reduces system lifecycle costs.

Safeguard essential electrical assets

ABB's Hi-Tech current-limiting fuses deliver superior protection with a small, cost-efficient solution that is designed to optimize value, reliability and reduce system lifecycle costs. With fault-clearing capabilities in less than one-half cycle, Hi-Tech fuses reduce let-through energy, significantly lowering equipment stress and prioritizing safety across overhead and underground distribution systems.

Key Features and Benefits

<p>Manufactured in Hickory, North Carolina, USA, ABB's Hi-Tech current-limiting fuses protect critical distribution equipment from fault currents, reducing equipment stress and preventing system damage while maintaining reliable system performance.</p>

Safe

<p>Fault-clearing capabilities in less than one-half cycle reduce let-through energy, significantly reducing equipment stress and increasing safety.</p>

Reliable

<p>100% factory tested with damage sensor for long, reliable operation and reduced failure risk.</p>

Cost-effective

<p>Advanced designs in small form factors optimize value and reduce system lifecycle costs.</p>

Comprehensive

<p>Multiple series (OS, EXT, FX, EX, SX) designed for specific applications.</p>

Industries We Support

From residential construction to commercial and industrial projects, our products support professionals across diverse industries.

Utilities , Power generation, Data centers, Renewable energy

Challenges We Solve

Our products are designed to help professionals solve installation, safety and performance challenges in demanding applications.

Fire and explosion hazards, Wildfire-prone locations, Equipment overheating risks, Worker safety, Long service life requirements

   

We make utility smarter

Take a virtual tour through ABB's Installation Products Utility Solutions to view our full range of products.

Product Selection Tool

Hi-Tech® FACT Configurator

Hi-Tech FACT offers a simple, real-time solution to optimize backup current-limiting fuse selection based on the provided transformer configuration. FACT provides multiple types of expulsion fuses common in the industry, enabling users to select a specific rating as needed when defined by industry or utility specifications.

Our Electrical Solutions in Action: Videos

Hi‑Tech: Advanced Fuse Protection for Modern Power Systems

For over 20 years, Hi-Tech current-limiting fuses have protected critical utility infrastructure. From overhead distribution to fire mitigation, ABB's Hi-Tech fuses provide unmatched performance, safety and value.

Our Stories: Industry News and Insights

How ABB’s Hi-Tech Valiant™ Current Limiting Fuse for Fire Mitigation Impacts Safety & Reliability, Protecting the Environment & Critical Infrastructure

Discussing the Hi-Tech Valiant Fuse for Fire Mitigation with ABB’s Dominique Tardif.

ABB helps utilities protect against wildfires with new Hi-Tech Valiant™ fire mitigation fuse

Wildfires in North America burn millions of acres, damage billions of dollars in property, and cause injury and loss of life each year. ABB Installation Products introduces the new Hi-Tech ValiantTM current limiting fuse for fire mitigation.

Wildfires and the grid: solutions for a safer energy transition

Wildfires, once a seasonal threat, have become a year-round concern across vast regions of the globe.