ECSR90 - 90Amp Fuse

ECSR90 - 90Amp Fuse

Keeping electrical systems running smoothly starts with choosing the right overcurrent protection, and the Eaton ECSR90 is built with exactly that goal in mind. This 90 Amp Class RK5 dual-element time-delay fuse is designed to protect motors, transformers, feeders, and branch circuits from damaging overloads and short circuits while allowing the brief inrush currents that naturally occur when equipment starts up. Instead of replacing fuses because of normal operating conditions, you get dependable protection that reacts when there's an actual fault—helping reduce unnecessary downtime and keeping critical equipment in service.

Built for demanding commercial and industrial environments, the ECSR90 features a 600-volt AC rating and an impressive 200kA interrupting capacity, giving it the ability to safely clear high fault currents before they can damage valuable equipment. Whether you're replacing an existing Class RK5 fuse during routine maintenance or specifying components for a new installation, the Eaton ECSR90 delivers the dependable performance and long-term reliability professionals have come to expect from Eaton.

Key Features and Benefits

• 90 Amp Class RK5 dual-element time-delay fuse
• Helps reduce nuisance fuse openings during motor startup and temporary inrush currents
• Protects motors, transformers, feeders, branch circuits, and power distribution equipment
• Rated for 600 VAC electrical systems
• High 200kA interrupting capacity (kAIC) for dependable fault-current protection
• Superior overload and cycling capabilities for demanding applications
• Dual-element design balances time-delay operation with fast short-circuit response
• Non-indicating fuse construction
• Compatible with standard Class RK5 fuse holders and disconnect switches
• Ideal for commercial, industrial, and OEM electrical systems

Technical Specifications

• Catalog Number: ECSR90
  
• Manufacturer: Eaton
  
• Series: Edison ECSR
  
• Product Type: Fuse
  
• Class: RK5
  
• Amperage Rating: 90 Amps
  
• Voltage Rating: 600 VAC
  
• Interrupt Rating: 200 kAIC
  
• Number of Elements: Dual
  
• Response Time: 10 seconds at 500% overload
  
• Fuse Indicator: Non-indicating
  
• Special Features: Superior overload and cycling capabilities
  
• Packaging Type: Standard
  
• Dimensions: 1.5 in. (L) × 0.41 in. (W) × 0.41 in. (H)
  
• Weight: 0.19 lb
  
• UPC: 782634508427
  

Material Compliance and Certifications

The Eaton ECSR90 is CE Marked, demonstrating compliance with recognized international safety requirements for electrical protection devices. It is intended for installation by qualified electrical personnel and should be installed in accordance with applicable electrical codes and the manufacturer's recommendations.

Where It Works Best

• Motor control centers (MCCs)
• Industrial control panels
• Motor branch circuits
• Transformer protection
• Feeder and branch circuit protection
• Commercial HVAC equipment
• Manufacturing and processing facilities
• Commercial electrical distribution systems
• OEM machinery and equipment
• Replacement of existing Class RK5 fuses