Product Description
The Tri-Onic TRS5R Fuse is a premium time-delay, dual-element cartridge fuse designed by Mersen (formerly Ferraz Shawmut) for industrial over-current protection applications. This model is rated at 5 Amps, with a 600 V AC/DC voltage rating and a high interrupting capacity of 200 kA RMS at 600 V AC, making it ideal for motor circuits, transformers, feeders, branch circuits and service entrance equipment.
It features a dual-element design (time-delay + current-limiting) so it's able to accommodate harmless startup inrush currents (such as motor starts or transformer energization) without nuisance opening, while still providing reliable protection under sustained fault conditions.
Product Details
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Brand: Mersen (Tri-Onic series)
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Model / Part Number: TRS5R
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Condition: Used
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Type: Dual-Element, Time-Delay, Current-Limiting Cartridge Fuse
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Amperage Rating: 5 A
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Voltage Rating: 600 V AC / 600 V DC
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Interrupt Rating: ~200 kA RMS @ 600 V AC
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Fuse Class: Class RK5
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Body Style / Size: Cylindrical cartridge (≈ 0.81″ diameter × 5″ length)
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Applications: Motor protection, transformer inrush circuits, industrial feeders, branch circuits, service entrance equipment
Key Features
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Time-delay characteristic allows safe handling of inrush currents without premature fuse opening.
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Current-limiting behaviour reduces let-through energy, helping protect downstream equipment and reduce damage during fault events.
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Rated for both AC and DC at 600 V — versatile in various power systems.
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High interrupting capacity (~200 kA) supports demanding fault-level environments with reliability.
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Rejection-style design prevents use of incorrect or lower-rated fuses, enhancing system safety.
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Built with durable cartridge body, suitable for harsh industrial conditions.
TRS5R-UA1-YAG
