In any industrial or commercial environment, power reliability is non-negotiable. When a fuse blows, it can disrupt operations, delay processes, and lead to costly downtime. United Automation’s Fuse Monitor with Alarm Output is a game-changer, designed to quickly detect and signal fuse failures, ensuring minimal downtime and uninterrupted operations.
In this blog, we’ll dive into the features, benefits, and applications of this innovative device, highlighting why it’s a must-have for two-phase and three-phase systems.
The Problem: Fuse Failures and Operational Downtime
A blown fuse can lead to system failures that halt operations. Often, identifying which fuse has failed is time-consuming and requires manual inspection. In critical systems—like heating, manufacturing lines, or large-scale machinery—these delays can escalate into significant disruptions and financial losses.

The Solution: United Automation’s Fuse Monitor with Alarm Output
United Automation’s Fuse Monitor with Alarm Output addresses this challenge head-on. This compact, DIN rail-mounted module provides real-time monitoring of fuses, immediately notifying users of any failure via visual indicators and an alarm output.
Key Benefits:
- Immediate Fuse Failure Detection
With individual RED LEDs for each fuse, this module allows users to quickly identify which fuse has blown, eliminating the need for guesswork. - Resettable Alarm System
Unlike conventional indicators, the Fuse Monitor is resettable. Simply power cycle the unit after resolving the issue—no need to replace parts. - Fail-Safe Operation
An alarm output activates not only when a fuse blows but also if the unit loses power, ensuring complete reliability in monitoring. - Compact and User-Friendly Design
Designed for simple DIN rail mounting, the Fuse Monitor is easy to install and integrates seamlessly into two-phase or three-phase systems.
Key Features of the Fuse Monitor with Alarm Output
- Individual Phase LEDs: Dedicated indicators for each monitored fuse for precise fault identification.
- Power ON LED: Confirms system power status with a Green LED.
- Resettable Alarm Output: Alerts the user of a blown fuse or power failure and resets upon power cycling.
- Low Voltage Operation: Operates at just 5V DC for energy-efficient monitoring.
- Flexible Options: Available in 2-phase or 3-phase configurations to suit a variety of applications.
Technical Specifications
Feature | Details |
Supply Voltage | 5V DC |
Alarm Relay | Normally Closed/Normally Open |
Current Consumption | No Fault: 46mA, 1 Phase Fault: 8mA, 2 Phase Fault: 12mA, 3 Phase Fault: 17mA |
Mounting | DIN Rail |
Dimensions | 94mm (H) x 73mm (W) x 46mm (D) |
Applications of the Fuse Monitor
The Fuse Monitor is a versatile solution, suitable for any application where supply fuses are used. It is particularly valuable in:
- Control Cabinets: For systems managing heating, cooling, or electrical equipment in schools, hospitals, and industrial facilities.
- HVAC Systems: Ensure reliable heating and ventilation in critical environments.
- Manufacturing Plants: Minimise downtime by quickly addressing fuse failures in assembly lines and heavy machinery.
- Power Distribution Systems: Monitor multi-phase power setups in commercial buildings or factories.
Real-Life Example:
Imagine a control cabinet in a hospital’s heating system. A fuse fails during peak winter demand, but instead of waiting for the temperature to drop as a failure cue, the Fuse Monitor immediately triggers a remote alarm. Maintenance teams can replace the fuse and restore operation before the system fully shuts down, saving time and ensuring patient comfort.
Why Choose United Automation’s Fuse Monitor?
- Efficiency and Speed
The real-time detection and notification system reduces downtime, allowing for faster troubleshooting and maintenance. - Cost-Effective
The resettable alarm eliminates the need for component replacements common in other indicators, offering long-term savings. - Adaptability
With its scalable design, the Fuse Monitor is prepared for future upgrades, including potential support for 24V supply and individual phase alarm outputs. - Reliability
Built to United Automation’s high standards, this device offers consistent performance even in demanding environments.
The Future of Fuse Monitoring
With its innovative features and robust design, the Fuse Monitor with Alarm Output sets a new standard in power management. United Automation continues to develop solutions that empower industries with smarter, more efficient control systems.
Ready to Optimise Your Fuse Monitoring?
If you’re looking to minimise downtime, enhance operational efficiency, and improve safety in your power systems, the Fuse Monitor with Alarm Output is the ideal solution. Available in 2-phase or 3-phase configurations, this cutting-edge device is your trusted partner for reliable and efficient fuse monitoring.
Visit United Automation to learn more about this product and explore our range of industrial power control solutions.