Mersen Ferraz Amp-Trap Series A15QS fuses are electrical protection devices suitable to safeguard electrical systems and equipment from overcurrent conditions. They are used in industrial and commercial electrical settings to avoid hazardous electrical faults. They feature visual indication or remote signalling capability, allowing users to easily identify when they require replacement. These A15QS fuses offer optional auxiliary microswitches, providing additional monitoring capabilities and enabling users to integrate them into advanced control systems for enhanced protection and real-time status monitoring. These A15QS fuses maintain a consistent size across all their variants, ensuring ease of installation and replacement.