ECSR350 - 350Amp Fuse

ECSR350 - 350Amp Fuse

When electrical systems are powering large equipment, every component has a job to do—and the Eaton ECSR350 Class RK5 fuse is built to handle that responsibility with confidence. Rated at 350 amps and 600 volts, this dual-element time-delay fuse helps protect motors, transformers, feeders, and other demanding electrical equipment from overloads and short circuits while reducing unnecessary fuse openings during normal startup conditions. That means less downtime, fewer interruptions, and more reliable operation where it matters most.

The finger-safe, non-indicating design also helps make installation and servicing more convenient. Whether you're replacing an existing Class RK5 fuse or maintaining critical power distribution equipment, the ECSR350 delivers the dependable performance expected from Eaton's Edison fuse lineup.

Key Features and Benefits

• 350-amp Class RK5 fuse for commercial and industrial electrical systems
• Dual-element, time-delay design helps minimize nuisance openings during motor startup
• 600V AC rating for demanding power distribution applications
• 200kA interrupting capacity provides high fault current protection
• Helps protect motors, transformers, feeders, and branch circuits from overloads and short circuits
• Finger-safe construction improves handling during installation and maintenance
• Non-indicating fuse design
• Compatible with standard Class RK5 fuse holders and fuse blocks
• Built for dependable, long-term electrical protection

Technical Specifications

• Manufacturer: Eaton
• Series: Edison ECSR
• Catalog Number: ECSR350
• Product Type: Fuse
• Class: RK5
• Amperage Rating: 350 Amps
• Voltage Rating: 600 VAC
• Interrupt Rating: 200 kAIC
• Element Type: Dual-element
• Response Time: 10 seconds at 500% overload
• Fuse Indicator: Non-indicating
• Special Features: Finger-safe construction
• Dimensions: 5.00 in. (L) × 0.81 in. (W) × 0.81 in. (H)
• Weight: 0.40 lb
• Packaging Type: Standard

Material Compliance and Certifications

The Eaton ECSR350 is CE marked, demonstrating compliance with applicable European safety requirements. It is manufactured to meet recognized performance standards for electrical circuit protection and is intended for installation by qualified personnel following applicable electrical codes and manufacturer recommendations.

Where It Works Best

• Motor control centers (MCCs)
• Industrial control panels
• Feeder circuit protection
• Power distribution equipment
• Transformer protection
• HVAC systems
• Manufacturing facilities
• Commercial buildings
• Replacement of existing Class RK5 dual-element fuses