ECSR12 - 12Amp Fuse

ECSR12 - 12Amp Fuse

Electrical systems rarely operate under perfectly steady conditions. Even in smaller control circuits, equipment still cycles on and off—motors start, relays engage, transformers energize, and control systems power up throughout the day. Those moments create short inrush currents that are normal, but they can still cause unnecessary interruptions if the protection reacts too quickly. That’s where the Eaton Edison ECSR12 Fuse fits in.

This 12 Amp Class RK5 dual-element time-delay fuse is designed to ride through brief startup surges without tripping unnecessarily. Instead of reacting to harmless inrush conditions, it allows equipment to stabilize during normal operation. When a genuine overload or fault occurs, it responds as expected to help protect wiring, components, and connected equipment. 

With a 600V rating and a 200 kAIC interrupting capacity, the ECSR12 is suitable for a wide range of commercial and industrial applications where dependable circuit protection is needed at lower amperage levels. You’ll commonly find it in control panels, OEM equipment, HVAC control circuits, and automation systems where small loads still require stable protection.

Key Features and Benefits

• 12 Amp Class RK5 time-delay fuse for low-amperage industrial and commercial circuits
• Super lag design helps manage short-duration inrush current during startup
• Reduces nuisance fuse openings caused by normal equipment cycling
• 600V rating suitable for a wide range of electrical systems
• 200 kAIC interrupt rating for dependable fault protection capability
• Dual-element construction supports controlled time-delay operation
• Commonly used in control circuits, HVAC systems, and OEM equipment
• Helps maintain steady system operation with fewer interruptions
• Non-indicating design for straightforward replacement

Technical Specifications

• Manufacturer: Eaton
• Series: Edison ECSR
• Catalog Number: ECSR12
• Product Type: Fuse
• Fuse Class: RK5
• Amperage Rating: 12 A
• Voltage Rating: 600 V
• Interrupt Rating: 200 kAIC
• Response Time: 10 seconds at 500% overload
• Special Features: Super lag, time lag, non-current limiting
• Number of Elements: Dual-element
• Fuse Indicator: Non-indicating
• Packaging Type: Standard
• Dimensions:
  • 9.63 in L × 1.61 in W × 1.61 in H
• Weight: 1.5 lb
• Compliance: CE Marked

Material Compliance and Certifications

The ECSR12 is CE Marked and manufactured under Eaton’s established quality standards. It is intended for use in properly rated electrical systems and should be installed in accordance with applicable electrical codes and industry practices.

Where It Works Best

The ECSR12 is commonly used in lower-amperage circuits where systems still experience regular startup activity:

• Control panels and electrical enclosures
• HVAC control circuits
• OEM machinery and equipment
• Automation and control systems
• Motor control auxiliary circuits
• Instrumentation and monitoring systems
• Commercial electrical distribution panels
• Industrial control applications

When you need consistent protection for low-amperage circuits without nuisance interruptions, the ECSR12 provides steady, predictable performance in everyday operating conditions.