ECSR40 - 40Amp Fuse

ECSR40 - 40Amp Fuse

When dependable circuit protection matters, the Eaton ECSR40 is built to keep your electrical system operating safely and efficiently. This 40 Amp Class RK5 dual-element time-delay fuse is engineered to protect motors, transformers, branch circuits, and other electrical equipment from damaging overloads and short circuits while allowing temporary inrush currents during motor startup. That means fewer nuisance fuse openings, less downtime, and greater confidence that your equipment stays online when it matters most. Whether you're replacing an existing fuse or maintaining industrial electrical systems, the ECSR40 delivers the reliable overcurrent protection electricians, maintenance professionals, OEMs, and facility managers depend on every day.

Designed for demanding commercial and industrial environments, the Eaton ECSR40 features a 600V AC rating and a 200 kA interrupting capacity (kAIC), allowing it to safely interrupt high fault currents and help protect valuable equipment. Its dual-element construction provides time-delay performance that accommodates normal startup surges without sacrificing protection against sustained overloads.

Key Features and Benefits

• Provides dependable protection against overloads and short circuits
• Dual-element time-delay design helps prevent nuisance openings caused by temporary motor starting currents
• 40 Amp current rating for commercial and industrial electrical applications
• Rated for 600 VAC operation
• High 200 kA interrupting capacity (kAIC) for enhanced fault current protection
• Finger-safe construction promotes safer installation and maintenance
• Non-indicating Class RK5 fuse design
• Compatible with standard Class RK5 fuse holders and disconnect switches
• Trusted Eaton quality for long-lasting electrical circuit protection

Technical Specifications

• Manufacturer: Eaton
• Series: Edison ECSR
• Catalog Number: ECSR40
• Product Type: Class RK5 Fuse
• Fuse Class: RK5
• Amperage Rating: 40 Amps
• Voltage Rating: 600 VAC
• Interrupt Rating: 200 kAIC
• Response Time: 10 seconds at 500% overload
• Number of Elements: Dual-element
• Fuse Indicator: Non-indicating
• Special Features: Finger-safe construction
• Packaging Type: Standard
• Dimensions: 11.63 in. L × 2.34 in. W × 2.34 in. H
• Weight: 2.35 lb

Material Compliance and Certifications

• CE Marked
• Manufactured to meet applicable industry requirements for electrical circuit protection
• Designed for installation in accordance with applicable electrical codes and manufacturer recommendations

Where It Works Best

• Motor control centers (MCCs)
• Industrial control panels
• Motor branch circuit protection
• Transformer protection
• HVAC equipment
• Manufacturing facilities
• Commercial buildings
• OEM machinery and equipment
• Distribution systems requiring Class RK5 time-delay fuses
• Maintenance, repair, and replacement of existing Class RK5 fuse installations