Overview
The Reliance ECNR2 250V is a dual-element, time-delay fuse designed for industrial electrical protection. With a 2A rating and Class RK5 current-limiting classification, this fuse provides superior overload and cycling capabilities. The ECNR2 features 200 kAIC interrupting capacity and 8-second clearing time at 500% overload, making it ideal for circuits requiring protection against both transient overloads and sustained faults.
Key Features
- Dual-element design — allows temporary overload tolerance before clearing, reducing nuisance trips on motor inrush
- Class RK5 current-limiting — limits let-through current and arc energy, protecting downstream components
- Time-delay protection — accommodates normal startup surges while clearing dangerous faults rapidly
- 250V rated — suitable for standard industrial AC circuits
- Lot of 5 units — cost-effective for stocking multiple fuse holders or as spares
Technical Specifications
- Ampere Rating: 2A
- Voltage Rating: 250V AC (also rated 125V DC)
- Fuse Class: Class RK5
- Type: Dual-element, time-delay, non-indicating
- End Configuration: Ferrule end × ferrule end (1¼” × â…œ”)
- Interrupting Capacity: 200 kAIC
- Clearing Time: 8 seconds at 500% overload
- Lot Quantity: 5 fuses
- Brand: Reliance (Eaton Edison)
Typical Applications
The ECNR2 is commonly used in:
- Industrial control circuits and transformer primaries
- Small motor branch circuit protection (up to 2 HP)
- Lighting and small appliance circuits in industrial environments
- Equipment starter protection where time-delay clearing is required
- Replacement in retrofit or repair situations requiring dual-element fuses
Compatibility & Replacements
Compatible With
- Standard Class RK5 fuse blocks and holders (1¼” × â…œ” ferrule configuration)
- Industrial control panels and motor starter circuits
- Any circuit designed for ECNR-series dual-element fuses
- 250V AC branch circuits in industrial facilities
Replaces / Drop-In Replacement For
- Original Reliance ECNR2 fuses (exact replacement)
- Bussmann/Edison ECNR2 equivalents
- Other Class RK5 dual-element 2A fuses with same footprint (verify holder compatibility)
Works With
- Standard industrial fuse holders rated for Class RK5 fuses
- Motor control centers (MCCs) with ECNR-compatible blocks
- Distribution panels and disconnect switches with appropriate fuse clips
- UL/CSA-listed electrical distribution systems requiring Class RK5 protection
