ECNR50 - 50 Amp Fuse

ECNR50 - 50 Amp Fuse

Electrical systems don’t operate in a perfect, steady state. Motors start up, transformers energize, and HVAC systems cycle throughout the day—all of which create short bursts of current that are completely normal. The Eaton Edison ECNR50 Fuse is designed specifically for those real-world conditions, giving you reliable protection without the nuisance interruptions that can slow everything down.

This 50 Amp Class RK5 dual-element time-delay fuse is built to distinguish between harmless startup surges and actual electrical faults. So when a motor kicks on or a transformer energizes, it holds steady instead of blowing unnecessarily. But when a true overload or short circuit happens, it reacts quickly to help protect your equipment and wiring from damage.

That balance is what makes it such a dependable choice in industrial and commercial environments. Less downtime, fewer unexpected shutdowns, and more consistent operation throughout the day.

Key Features and Benefits

• 50 Amp Class RK5 fuse designed for industrial and commercial use
• Dual-element time-delay design helps manage motor and transformer inrush currents
• Reduces nuisance fuse blowing during normal equipment startup
• High 200 kAIC interrupting rating for strong fault protection
• Rated for 250 VAC and 125 VDC systems
• Helps improve uptime and reduce unnecessary service interruptions
• Ideal for motors, HVAC systems, transformers, and industrial equipment
• Non-indicating design for simple field replacement
• Built for dependable performance in real-world electrical environments

Technical Specifications

• Manufacturer: Eaton
  
• Series: Edison ECNR
  
• Catalog Number: ECNR50
  
• UPC: 782634507383
  
• Product Type: Fuse
  
• Fuse Class: RK5
  
• Amperage Rating: 50 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: 10.38 in L × 2.88 in W × 2.88 in H
  
• Weight: 3.15 lb
  
• Packaging Type: Standard
  

Material Compliance and Certifications

The Eaton ECNR50 is CE Marked, indicating compliance with recognized international safety and performance standards. It is manufactured under Eaton’s quality control processes and intended for use in properly rated electrical systems following applicable electrical codes and installation requirements.

Where It Works Best

The ECNR50 is commonly used in environments where electrical loads naturally fluctuate and equipment needs to stay online through normal startup conditions:

• Motor control centers (MCCs)
• Industrial machinery and production systems
• HVAC and refrigeration equipment
• Transformer and inductive load circuits
• Commercial electrical distribution systems
• Pump and compressor systems
• OEM equipment installations
• Automation and control panels
• Facility maintenance and system upgrades requiring a 50A RK5 fuse

When you need protection that doesn’t interfere with normal operation but still responds fast when something goes wrong, the Eaton Edison ECNR50 delivers exactly that balance—steady, dependable, and built for real-world electrical demands.