Overview
The Economy ECNR6/10 is a Class RK5 dual-element, time-delay fuse designed for motor protection circuits and general industrial electrical systems. This box of 9 combines both 6A and 10A rated units, providing flexible protection options for equipment subject to temporary overloads and inrush currents. The fuses carry a 250V AC and 125V DC voltage rating with a 200 kAIC interrupting rating at 250V AC.
Key Features
- Dual-element design: Combines overload and short-circuit protection in a single cartridge
- Time-delay characteristic: Withstands temporary overloads (5x rated current minimum for 10 seconds) without nuisance blowing
- Class RK5 rated: UL and CSA certified for selective coordination in motor circuits
- Non-indicating cartridge: Ferrule-end terminals for standard fuse clips and blocks
- High interrupting rating: 200 kAIC at 250V AC ensures safe short-circuit handling
- Dual voltage: Works on 250V AC and 125V DC systems
Technical Specifications
- Fuse Type: Dual-element, time-delay cartridge
- Current Ratings: 6A and 10A (mixed box)
- Voltage Rating: 250V AC, 125V DC
- Class: RK5
- Interrupting Rating: 200 kAIC at 250V AC
- Terminal Type: Ferrule end x ferrule end
- Speed Rating: Time-delay (slow-blow)
- Overload Hold Time: 8–10 seconds at 500% rated current
- Package Quantity: 9 fuses per box
- Certifications: UL 248-12, CSA C22.2 No. 248.12
Typical Applications
- Three-phase and single-phase motor branch circuits
- Machinery control centers and disconnect switches
- Industrial automation equipment with cyclic or surge loads
- HVAC compressor and pump motor protection
- Machine tool and conveyor system circuits
- Backup protection in selective coordination schemes
Compatibility & Replacements
Compatible With
- Standard Class RK5 fuse clips and holders rated for 250V
- Industrial control panels and motor disconnect switches
- Motor starter circuits and branch circuit protectors
- Any system designed for Class RK5 dual-element protection
Replaces / Drop-In Replacement For
- Bussmann Edison ECNR6 and ECNR10 series fuses
- Cooper Bussmann equivalent Class RK5 time-delay cartridges
- Other Time-delay dual-element fuses in the 6–10A range (verify with your panel design)
Works With
- Standard Class RK5 fuse blocks and mounting bases
- Ferrule-terminal compatible disconnect and motor starter equipment
- UL and CSA certified industrial control circuits
- Selective coordination schemes using Class RK5 series fuses
