ECNR4 - 4 Amp Fuse

ECNR4 - 4 Amp Fuse

When you're protecting sensitive electrical equipment, even small currents matter. The Eaton Edison ECNR4 Fuse is a 4 Amp Class RK5 dual-element time-delay fuse designed to deliver dependable overcurrent protection for low-amperage circuits in commercial, industrial, and OEM applications. It’s commonly used in control systems, automation panels, transformers, and other equipment where stability and precision protection are critical.

What makes this fuse especially useful is how it handles everyday electrical behavior. Many systems experience brief startup surges when power is first applied—especially control transformers, small motors, and electronic components. Instead of reacting too quickly and shutting the system down unnecessarily, the ECNR4 is designed to tolerate those short inrush conditions. Once a true overload or fault occurs, it responds quickly to help protect equipment and prevent damage.

Key Features and Benefits

• 4 Amp Class RK5 fuse for low-amperage circuit protection
• Dual-element time-delay design helps handle startup inrush currents
• Reduces nuisance fuse openings during normal system energization
• High 200 kAIC interrupting rating for strong fault protection
• Rated for 250 VAC and 125 VDC applications
• Ideal for protecting sensitive control and electronic equipment
• Helps improve system uptime and reduce maintenance interruptions
• Non-indicating design for straightforward replacement
• Suitable for industrial, commercial, and OEM electrical systems

Technical Specifications

• Manufacturer: Eaton
  
• Series: Edison ECNR
  
• Catalog Number: ECNR4
  
• UPC: 782634507208
  
• Product Type: Fuse
  
• Fuse Class: RK5
  
• Amperage Rating: 4 A
  
• Voltage Rating: 250 VAC / 125 VDC
  
• Interrupt Rating: 200 kAIC
  
• Response Time: 8 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 ECNR4 fuse is CE Marked, indicating compliance with applicable international safety and performance standards. It is manufactured under Eaton’s quality control standards and intended for use in properly rated electrical systems following applicable electrical codes and equipment guidelines.

Where It Works Best

The ECNR4 is well suited for applications where electrical loads are small but still require precise and reliable protection:

• Industrial control panels
• Control transformers
• Automation and PLC systems
• OEM machinery and equipment
• HVAC control circuits
• Electrical distribution control systems
• Manufacturing and processing equipment
• Maintenance and replacement of low-amperage RK5 fuses

For systems that rely on sensitive electronics and consistent operation, the Eaton Edison ECNR4 provides dependable protection without interfering with normal startup behavior—helping keep everything running smoothly and safely.