ECNR450 - 450Amp Fuse

ECNR450 - 450Amp Fuse

When you’re working with high-capacity electrical systems, everything comes down to reliability under pressure. The Eaton Edison ECNR450 Fuse is a 450 Amp Class RK5 dual-element time-delay fuse built for demanding commercial and industrial environments where electrical loads are heavy, startup surges are normal, and downtime simply isn’t an option.

In real-world systems, large motors, transformers, compressors, and industrial machinery don’t draw power in a perfectly steady way. They pull a surge of current during startup, then settle into normal operation. The ECNR450 is designed specifically for that behavior. Instead of reacting to those harmless inrush conditions, it allows them to pass without interruption. But when a true overload or short circuit occurs, it responds quickly to help protect equipment, wiring, and downstream systems from serious damage.

Rated for 250 VAC and 125 VDC systems, this fuse fits a wide range of industrial applications, from motor control centers and main distribution panels to OEM equipment and facility-wide power systems. It’s built for consistency—helping reduce nuisance shutdowns, protect valuable equipment, and keep operations running smoothly even in demanding conditions.

Key Features and Benefits

• 450 Amp Class RK5 fuse designed for high-capacity electrical systems
• Dual-element time-delay construction helps manage motor and transformer inrush currents
• Reduces nuisance fuse openings during normal startup conditions
• High 200 kAIC interrupting rating for strong fault protection in demanding environments
• Rated for 250 VAC and 125 VDC applications
• Helps improve uptime and reduce unexpected system interruptions
• Suitable for motors, compressors, transformers, and industrial power distribution
• Non-indicating design for simple replacement and maintenance
• Built for dependable performance in heavy-duty electrical systems

Technical Specifications

• Manufacturer: Eaton
  
• Series: Edison ECNR
  
• Catalog Number: ECNR450
  
• UPC: 782634507543
  
• Product Type: Fuse
  
• Fuse Class: RK5
  
• Amperage Rating: 450 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 ECNR450 fuse is CE Marked, confirming compliance with recognized international 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 ECNR450 is commonly used in high-demand electrical environments where system stability and uptime are critical:

• Motor control centers (MCCs)
• Heavy industrial machinery and production systems
• HVAC and large mechanical equipment
• Power distribution panels and switchgear
• Transformer and inductive load circuits
• Pumping and compressor systems
• Commercial and industrial electrical infrastructure
• OEM heavy-duty equipment applications
• Facility-wide electrical protection systems

For systems that demand strong fault protection while still handling real-world startup surges, the Eaton Edison ECNR450 delivers dependable performance designed to keep operations running safely and consistently.