Overview
The Gould Shawmut Tri-Onic TRS15R is a 15A 600VAC Class RK5 time-delay fuse engineered for industrial electrical protection. This dual-element fuse combines reliable overload tolerance with rapid short-circuit response, making it ideal for motor circuits, transformers, and lighting loads. The Tri-Onic Smart Spot technology delivers consistent performance in demanding industrial environments. This lot includes 2 units in new condition.
Key Features
- Dual-element time-delay design prevents nuisance trips on motor inrush
- Class RK5 rating with 200kA interrupting capacity at 600VAC
- Current-limiting construction protects equipment and reduces arc damage
- AC/DC rated (600VAC / 300VDC) for diverse circuit applications
- Rejection-style design prevents incorrect replacement
- UL Listed to UL 248-12, CSA Certified to C22.2 No. 248.12
Technical Specifications
- Current Rating: 15A
- AC Voltage Rating: 600V
- DC Voltage Rating: 300V
- Class: RK5 (Time Delay)
- Interrupting Capacity: 200,000 AIC @ 600VAC; 20,000 AIC @ 300VDC
- Physical Size: 13/16″ diameter × 5″ length
- Body Material: Polyester
- Contact Material: Copper
- Type: Single-use cartridge fuse, dual-element
- Standards: UL 248-12 (File E2137), CSA C22.2 No. 248.12
- Quantity: Lot of 2 fuses
Typical Applications
- AC motor circuit protection in industrial drive systems
- Primary and secondary transformer circuits
- Lighting and power distribution panels
- Equipment with inductive loads requiring time-delay response
- OEM control panels and MCC bucket circuits
Compatibility & Replacements
Compatible With
- Standard RK5 fuse blocks rated for 600VAC cartridge fuses
- Industrial electrical panels and switchboards
- Motor control centers and starter circuits
- Transformer primary/secondary protection circuits
- Any circuit designed for Class RK5 15A 600V fuses
Replaces / Drop-In Replacement For
- Equivalent 15A 600VAC RK5 time-delay cartridge fuses from competing manufacturers
- Verify compatibility with your existing fuse block before ordering to ensure proper fit and electrical ratings
Works With
- RK5 fuse reducers (60A to 30A, 100A to 30A)
- Standard box lugs, screw connectors, and pressure plate terminals
- Any Class RK5-rated fuse block or cartridge holder
- AC and DC electrical systems within voltage/current ratings




