ECNR90 - 90 Amp Fuse

ECNR90 - 90 Amp Fuse

In real electrical systems, nothing runs in a perfect straight line. Motors start, compressors kick on, HVAC units cycle, and transformers energize—all of which create short bursts of current that are completely normal, but can be tough on standard protection devices. The Eaton Edison ECNR90 Fuse is designed specifically for that reality.

This 90 Amp Class RK5 dual-element time-delay fuse gives you a smarter way to handle those everyday conditions. Instead of tripping during harmless startup surges, it allows equipment to power up normally and settle into steady operation. But when something actually goes wrong—like a sustained overload or short circuit—it reacts quickly to help protect wiring, equipment, and downstream systems.

The dual-element time-delay construction is what makes it especially effective in the field. It separates normal startup conditions from actual fault events, so your system only shuts down when it truly needs to—not because of a brief surge during startup.

Key Features and Benefits

• 90 Amp Class RK5 fuse designed for industrial and commercial electrical systems
• Dual-element time-delay design helps handle normal motor and transformer inrush currents
• Reduces nuisance fuse openings and unexpected downtime
• High 200 kAIC interrupting rating for strong fault protection capability
• Rated for 250 VAC and 125 VDC applications
• Helps improve system uptime and operational reliability
• Ideal for motors, HVAC systems, transformers, and industrial equipment
• Non-indicating design for quick and simple field replacement
• Built for dependable performance in real-world operating environments

Technical Specifications

• Manufacturer: Eaton
  
• Series: Edison ECNR
  
• Catalog Number: ECNR90
  
• UPC: 782634507420
  
• Product Type: Fuse
  
• Fuse Class: RK5
  
• Amperage Rating: 90 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: 5 in L × 0.81 in W × 0.81 in H
  
• Weight: 0.4 lb
  
• Packaging Type: Standard
  

Material Compliance and Certifications

The Eaton ECNR90 is CE Marked, confirming compliance with recognized international safety and performance standards. It is manufactured under Eaton’s quality systems and intended for use in properly rated electrical installations following applicable electrical codes and installation practices.

Where It Works Best

The ECNR90 is commonly used in environments where electrical loads change frequently and consistent uptime is important:

• 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
• Industrial automation systems
• Facility maintenance and electrical upgrades requiring a 90A RK5 fuse

When you need a fuse that can handle everyday startup conditions without nuisance interruptions—but still step in fast when something is actually wrong—the Eaton Edison ECNR90 delivers reliable, real-world protection built for demanding electrical environments.