ECSR150 - 150Amp Fuse

ECSR150 - 150Amp Fuse

Electrical systems rarely run under perfectly steady conditions—and that’s completely normal. Motors kick on, transformers energize, and equipment cycles throughout the day, creating brief spikes in current that aren’t actually problems. The Eaton Edison ECSR150 Fuse is designed with those real-world conditions in mind, helping your system stay up and running without unnecessary interruptions.

This 150 amp Class RK5 dual-element time-delay fuse is built to tell the difference between a harmless startup surge and a true overload. Instead of reacting too quickly and shutting things down, it allows equipment to start and operate as intended. When a genuine fault occurs, though, it responds as expected to help protect wiring, components, and connected equipment.

That balance is what makes a difference in everyday operation. Fewer nuisance openings mean less downtime, fewer replacements, and a smoother-running system overall—especially in environments where equipment cycles frequently or handles varying loads.

Key Features and Benefits

• 150 Amp Class RK5 time-delay fuse for higher-capacity circuit protection
• Dual-element design helps manage short-term inrush currents during startup
• Helps reduce nuisance openings caused by normal equipment cycling
• 600V rating suitable for industrial and commercial power systems
• 200 kAIC interrupt rating for dependable fault interruption capability
• Super lag / time-delay characteristics for motor and transformer loads
• Non-current limiting design for general-purpose overcurrent protection use
• Commonly used in feeders, HVAC systems, and industrial distribution circuits
• Supports steady operation in equipment with regular startup demand

Technical Specifications

• Manufacturer: Eaton
• Series: Edison ECSR
• Catalog Number: ECSR150
• Product Type: Fuse
• Fuse Class: RK5
• Amperage Rating: 150 A
• Voltage Rating: 600 V
• Interrupt Rating: 200 kAIC
• Response Time: 10 seconds at 500% overload
• Special Features: Super lag, time-delay, non-current limiting
• Number of Elements: Dual-element
• Fuse Indicator: Non-indicating
• Packaging Type: Standard
• Dimensions: 5 in L × 0.81 in W × 0.81 in H
• Weight: 0.4 lb
• Compliance: CE Marked

Material Compliance and Certifications

The ECSR150 is CE Marked and manufactured under Eaton’s established quality standards. It’s designed for use in properly rated electrical systems and should be installed in accordance with applicable electrical codes and best practices.

Where It Works Best

• Industrial feeder circuits
• HVAC power distribution systems
• Motor control centers (MCCs)
• Pump and compressor circuits
• Commercial electrical distribution panels
• OEM machinery and equipment power feeds
• Transformer secondary protection circuits
• General industrial power systems

If your system needs protection that won’t overreact to normal operating conditions—but still steps in when it matters—the ECSR150 is a dependable, straightforward solution.