ECNR45 - 45 Amp Fuse

ECNR45 - 45 Amp Fuse

In real electrical systems, things don’t always run perfectly clean or steady. Motors start up, transformers energize, HVAC systems cycle on and off—and all of that creates temporary surges in current. The Eaton Edison ECNR45 Fuse is designed with that reality in mind.

This 45 Amp Class RK5 dual-element time-delay fuse gives your system the flexibility to handle normal startup conditions without unnecessary interruptions. Instead of blowing every time there’s a brief inrush of current, it allows equipment to come online the way it’s supposed to. But when something truly goes wrong—like an overload or short circuit—it responds quickly to help protect your equipment and wiring.

The Class RK5 dual-element design is really what gives this fuse its “real-world” performance. It separates harmless startup conditions from actual electrical faults, which helps keep systems running without sacrificing protection.

Key Features and Benefits

• 45 Amp Class RK5 fuse for commercial and industrial electrical protection
• Dual-element time-delay design helps manage motor and transformer startup surges
• Reduces nuisance fuse blowing during normal equipment operation
• High 200 kAIC interrupting rating for strong fault protection capability
• Rated for 250 VAC and 125 VDC systems
• Helps improve uptime and reduce avoidable downtime events
• Suitable for motors, HVAC systems, transformers, and industrial machinery
• Non-indicating design for simple replacement and maintenance
• Built for dependable performance in demanding electrical environments

Technical Specifications

• Manufacturer: Eaton
  
• Series: Edison ECNR
  
• Catalog Number: ECNR45
  
• UPC: 782634507376
  
• Product Type: Fuse
  
• Fuse Class: RK5
  
• Amperage Rating: 45 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 ECNR45 is CE Marked, indicating compliance with recognized safety and performance standards. It is manufactured under Eaton’s quality control processes and is intended for use in properly rated electrical systems following applicable electrical codes and installation practices.

Where It Works Best

The ECNR45 is commonly used in systems where electrical loads naturally fluctuate and equipment needs both flexibility and protection:

• Motor control centers (MCCs)
• Industrial machinery and production equipment
• HVAC and refrigeration systems
• Transformers and inductive load applications
• Commercial electrical distribution systems
• Pump and compressor systems
• OEM equipment and control panels
• Facility maintenance and system upgrades requiring a 45A RK5 fuse

When you need a fuse that won’t trip every time equipment starts up—but will still act decisively when something goes wrong—the Eaton Edison ECNR45 delivers that practical, real-world balance.