Overview
The Gould Shawmut TRS1-6/10R is a Class RK5 time-delay cartridge fuse engineered for overcurrent protection in industrial and commercial electrical systems. Rated for 1 6/10 Ampere (1.6A) at 600VAC and 600VDC, this dual-element Tri-Onic fuse safely accommodates harmless starting and inrush currents while providing rapid protection against dangerous faults.
Key Features
- Class RK5 current-limiting — reduces let-through energy and thermal stress on equipment
- Dual-element time-delay design — distinguishes between temporary inrush and sustained overcurrent
- 600VAC/600VDC dual voltage rating — suitable for AC and DC systems
- 200kA AC interrupting rating; 20kA DC — meets UL 248-12 and CSA C22.2 No. 248.4 standards
- Rejection-style cartridge body — prevents installation errors
- 13/16″ × 5″ physical dimensions — standard cartridge fuse form factor
Technical Specifications
- Amperage Rating: 1 6/10A (1.6A)
- AC Voltage: 600VAC
- DC Voltage: 600VDC
- Class: RK5
- Type: Time Delay (Dual Element)
- Interrupting Rating (AC): 200,000 AIC at 600VAC
- Interrupting Rating (DC): 20,000 AIC
- Physical Size: 13/16″ × 5″
- Certifications: UL 248-12 (File E2137), CSA C22.2 No. 248.4, DC Listed
- Current-Limiting: Yes
Typical Applications
The TRS1-6/10R is ideal for:
- Motor branch circuits and feeders
- Transformer primary protection and in-rush current handling
- Service entrance equipment
- Industrial control circuits and machine tool protection
- Low-amperage DC systems up to 600V
Compatibility & Replacements
Compatible With
- Standard cartridge fuse holders rated for Class RK5 and 600V service
- Box lugs (aluminum/copper #2–14 AWG)
- Screw connectors (copper #10–14 AWG)
- Pressure plate connectors (copper #10–14 AWG)
- Fuse blocks with rejection design for RK5 cartridges
- Any electrical system requiring 600VAC or 600VDC overcurrent protection
Replaces / Drop-In Replacement For
- Ferraz Shawmut TRS1-6/10R (original manufacturer designation)
- Mersen TRS1-6/10R (current parent company)
- Tri-Onic TRS1-6/10R (equivalent product lines)
Works With
- UL and CSA certified electrical installations
- NFPA 70 (National Electrical Code) compliant systems
- Industrial automation and control cabinets
- Motor starter and contactor assemblies
- Power distribution units and service panels rated for Class RK5 protection








