Mersen TR100R Tri-Onic RK5 100A Time-Delay Industrial Fuse 250V AC/DC Current-Limiting Dual-Element Protection for Motors & Transformers

Mersen TR100R Tri-Onic Class RK5 Time-Delay Fuse

The Mersen TR100R is a dual-element, current-limiting Class RK5 fuse engineered to deliver dependable overcurrent protection for industrial motors, transformers, feeders, and branch circuits. Its time-delay design accommodates harmless motor start-ups and transformer inrush currents, ensuring stable system performance without nuisance interruptions.

Why It Helps
This Tri-Onic fuse provides enhanced circuit reliability by combining time-delay functionality with high interrupting ratings. The current-limiting action reduces peak let-through current during fault conditions, helping to protect connected equipment and minimize electrical stress.

Key Highlights

• The time-delay element supports motor and transformer inrush without unnecessary fuse opening, ensuring reliable operation in demanding applications.

• Current-limiting characteristics reduce fault energy, improving equipment protection and system longevity.

• The rejection-style RK5 design prevents incorrect fuse replacement, improving overall safety.

• Optional SmartSpot blown fuse indicator enhances troubleshooting and maintenance.

• Blade-style tin-plated copper terminals ensure low-resistance electrical connections.

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System Compatibility
Compatible with Class RK5 fuse holders and industrial circuits requiring 100A, 250V AC/DC time-delay protection.

Applications
Ideal for industrial motor control centers, transformer protection, feeders, branch circuits, and service entrance equipment. The TR100R provides proven reliability and long-term performance in heavy-duty electrical environments.