ECNR500 - 500Amp Fuse

ECNR500 - 500Amp Fuse

When you’re dealing with large-scale electrical systems, there’s no room for guesswork. Everything has to run smoothly under normal conditions and still be fully protected when something goes wrong. The Eaton Edison ECNR500 Fuse is a 500 Amp Class RK5 dual-element time-delay fuse built specifically for heavy-duty commercial and industrial applications where electrical loads are high and system reliability is critical.

In real-world operation, big equipment rarely runs at a perfectly steady current. Motors start, transformers energize, compressors cycle, and all of that creates brief but normal inrush currents.

With a 200 kAIC interrupting rating, this fuse is built for environments where fault current levels can be extremely high. It is rated for 250 VAC and 125 VDC systems, making it suitable for a wide range of industrial power distribution setups. Whether used in motor control centers, switchgear, large HVAC systems, or heavy industrial machinery, the ECNR500 is designed to support consistent, dependable performance under demanding conditions.

Key Features and Benefits

• 500 Amp Class RK5 fuse for high-capacity industrial electrical systems
• Dual-element time-delay design helps manage motor and transformer inrush currents
• Reduces nuisance fuse openings during normal startup conditions
• High 200 kAIC interrupting rating for strong fault-current protection
• Rated for 250 VAC and 125 VDC applications
• Helps improve uptime and reduce unplanned system shutdowns
• Suitable for motors, transformers, HVAC systems, and heavy industrial loads
• Non-indicating design for straightforward field replacement
• Built for dependable performance in demanding electrical environments

Technical Specifications

• Manufacturer: Eaton
  
• Series: Edison ECNR
  
• Catalog Number: ECNR500
  
• UPC: 782634507550
  
• Product Type: Fuse
  
• Fuse Class: RK5
  
• Amperage Rating: 500 A
  
• Voltage Rating: 250 VAC / 125 VDC
  
• Interrupt Rating: 200 kAIC
  
• Response Time: 10 seconds at 500% overload
  
• Number of Elements: Dual-element
  
• Fuse Indicator: Non-indicating
  
• Special Features: Non current limiting
  
• Dimensions: 2 in L × 0.56 in W × 0.56 in H
  
• Weight: 0.5 lb
  
• Packaging Type: Standard
  

Material Compliance and Certifications

The Eaton ECNR500 fuse is CE Marked, confirming compliance with recognized safety and performance standards. It is manufactured under Eaton’s quality control systems and is intended for use in properly rated electrical installations following applicable electrical codes and engineering practices.

Where It Works Best

The ECNR500 is commonly used in high-demand electrical environments where uptime and protection are equally important:

• Motor control centers (MCCs)
• Large industrial machinery and manufacturing systems
• HVAC and central plant equipment
• Power distribution panels and switchgear
• Transformer and high-capacity inductive load circuits
• Pumping and compressor stations
• Heavy commercial and industrial electrical infrastructure
• OEM high-power equipment applications
• Facility-wide electrical protection systems

For systems that demand serious capacity handling without sacrificing protection, the Eaton Edison ECNR500 delivers dependable performance designed for real-world industrial conditions—where electrical loads are heavy, and reliability matters every second.