Overview
The Edison ECSR45 is a Class RK5 dual element time-delay fuse rated at 45 amperes, 600V AC. ECSR45 fuses are specifically designed for AC power distribution system mains, feeders, and branch circuits where reliable overcurrent protection is critical. These dual-element fuses combine fast-acting and time-delay characteristics for superior protection of inductive loads (motors, transformers) and non-inductive loads (lighting, heating) in industrial and commercial applications.
Key Features
- Dual-element time-delay design allows closer sizing to running ampacity, reducing costs and improving overcurrent protection
- Handles normal equipment current surges without nuisance openings, ideal for motor circuits
- Class RK5 UL rejection design prevents unsafe replacement with incompatible fuse classes
- Rated for short-circuit currents up to 200,000 RMS symmetrical amps
- Ferrule terminal construction for reliable clip-mount installation in standard fuse holders
- UL 248, CSA C22.2, and CE approved for global application compatibility
Technical Specifications
- Ampere Rating: 45A
- Voltage Rating: 600V AC
- Fuse Class: RK5 (Dual Element Time-Delay)
- Interrupting Rating: 200 kA symmetrical at 600V AC
- Terminal Type: Ferrule (clip-mount)
- Fuse Diameter: 1.06 inch
- Fuse Length: 5.5 inch
- Time-Delay Characteristic: Minimum 10 seconds at 5x rated current
- Agency Approvals: UL 248-12, CSA C22.2, CE
Typical Applications
- AC power distribution mains and feeder protection in industrial facilities
- Motor circuits and transformer branch protection
- Commercial lighting and heating circuits with inductive loads
- Panel boards, switchboards, and bus duct protection
- Non-inductive load circuits requiring standard overcurrent protection
Compatibility & Replacements
Compatible With
- Standard clip-mount fuse holders rated for Class RK5 fuses
- AC power distribution systems, panel boards, and switchgear rated for 600V
- Industrial control systems and motor starters requiring dual-element fuse protection
- Electrical load centers and distribution equipment with Class RK5 fuse blocks
Replaces / Drop-In Replacement For
- Other 45A 600V Class RK5 dual-element time-delay fuses (verify exact part compatibility before installation)
- Verify with your system integrator to confirm compatibility with existing fuse holders before ordering
Works With
- Class RK5-rated fuse clips and holders (do not use with Class RK1, RK9, or other non-RK5 fuse holders)
- UL 248 compliant electrical distribution equipment
- Industrial and commercial AC power systems rated 600V or less
