Overview
The Edison Bullet ECNR1.6 250V 1.6A RK5 fuse is a dual-element, time-delay cartridge fuse engineered for branch circuits and feeders in industrial automation and power distribution systems. This Class RK5 fuse is rated for 250V AC and designed to protect circuits with inductive loads such as motors and transformers while minimizing nuisance tripping from normal inrush currents.
Key Features
- Dual-Element Time-Delay Design: Separates overload and short-circuit protection functions, tolerating momentary current surges while responding instantly to sustained overcurrent conditions.
- Class RK5 Rating: Meets UL 248-12 specifications for rejection-type fuses; 200 kA interrupting capacity at 250V AC.
- Industrial-Grade Construction: Fiberglass body with ferrule terminals; suitable for motor control centers, distribution panels, and equipment protection.
- Box of 10 Units: Convenient quantity for maintenance stock and system redundancy in industrial facilities.
- UL and CSA Certified: Tested to industry standards for reliability and safe operation in critical applications.
Technical Specifications
- Part Number: ECNR1.6 (also marked as ECNR1-6/10 by manufacturer)
- Ampere Rating: 1.6 A
- Voltage Rating: 250V AC / 125V DC
- Fuse Type: Dual Element Time-Delay
- Class: RK5
- Interrupting Capacity: 200 kA (symmetrical) at 250V AC
- Diameter: 0.56 inches (approximately 14 mm)
- Length: 2 inches (approximately 50 mm)
- Terminal Type: Ferrule contacts
- Body Material: Fiberglass
- Package Quantity: 10 fuses per box
- Certifications: UL 248-12, CSA Class 1422-01, CE approved
- Time-Delay Minimum: 8 seconds at 500% of rated current (industry standard for ≤30A at 250V)
Typical Applications
- Motor control circuits and branch feeders in industrial automation systems
- Power distribution panels with inductive loads (motors, transformers)
- AC power distribution mains and feeders in manufacturing equipment
- Control systems requiring small-frame overcurrent protection
- Replacement fuse for legacy industrial equipment and control cabinets
Compatibility & Replacements
Compatible With
- Class R fuse holders and rejection-type fuse blocks rated for RK5
- Industrial motor control centers and distribution equipment designed for cartridge fuses
- AC power circuits rated 250V with short-circuit protection requirements up to 200 kA
- Equipment supporting dual-element, time-delay fuse protection
Replaces / Drop-In Replacement For
- Bussmann/Eaton Fusetron FRN-R 1.6 (dual-element Class RK5 equivalent)
- Littlefuse FLNR1.6 (equivalent 1.6A time-delay fuse)
- Mersen Shawmut TR1.6 (Class RK5 replacement)
Works With
- All standard Class R rejection fuse blocks and clips designed for RK5 cartridge fuses
- Industrial control platforms using hardwired AC power distribution (PLC systems, servo drives, motor starters)
- Equipment featuring ferrule-terminal fuse holders in 250V / 125V DC circuits
