Overview
The Gould Shawmut TRS1R is a cylindrical, time-delay Class RK5 fuse rated for 1A at 600VAC. As part of the Tri-Onic TR and TRS current-limiting time-delay fuse line, it is engineered for overcurrent protection of motors and transformers, service entrance equipment, feeder and branch circuits. This fuse features a dual-element design that safely handles harmless inrush and starting currents while protecting against sustained overcurrent faults.
Key Features
- Ratings: 1A, 600VAC, 200kA I.R.
- Time-Delay Characteristic: Tri-Onic’s proven time delay characteristic safely handles harmless starting currents and inrush currents associated with today’s motors and transformers.
- Class RK5: Current-limiting design for enhanced system protection
- Dual-Element Construction: Combines thermal and magnetic operating principles
- Compact Cylindrical Design: Easy installation in standard fuse holders
Technical Specifications
The TRS1R meets industry standards for motor circuit protection and is suitable for both AC and DC applications within its rated voltage range.
Typical Applications
- Motor circuits and motor starter protection
- Transformer overcurrent protection
- Feeder and branch circuit protection
- Service entrance equipment protection
- General-purpose equipment protection in industrial control panels
Compatibility & Replacements
Compatible With
- Standard Class RK5 fuse holders rated for 600VAC
- Motor control centers and industrial switchgear
- Electrical distribution panels
- Equipment designed for 600VAC, 1A fuse protection
Replaces / Drop-In Replacement For
The TRS1R is a standard Gould Shawmut catalog part. The TR1R is the 250V equivalent and TRS1R the 600V equivalent in the Tri-Onic time-delay fuse line. Verify compatibility with your system integrator before ordering to ensure exact fit and rating match.
Works With
- Industrial control systems and motor starters
- Electrical distribution equipment
- Overcurrent protection schemes per NEC Article 240
- Class RK5 fuse-rated circuits and components



