A6K40R - 40Amp Fuse

A6K40R - 40Amp Fuse

The Mersen A6K40R Amp-Trap® Class RK1 Fast-Acting Fuse is made for your electrical systems that need dependable protection without unnecessary complexity. Rated at 40 Amps, this fuse helps protect your branch circuits and feeder circuits from overloads and short circuits before they can damage connected equipment.

When an electrical fault happens, response time matters. The A6K40R is designed to react quickly, helping reduce the amount of fault current moving through the system. That fast response can help protect transformers, control panels, disconnects, HVAC equipment, and other electrical components commonly used in commercial and industrial environments.

With a high 200 kA interrupting rating, the A6K40R works well in manufacturing facilities, commercial buildings, industrial machinery, and power distribution systems where reliable overcurrent protection is needed to help reduce downtime and equipment damage.

Key Features and Benefits

• 40 Amp Class RK1 Fast-Acting Fuse: Helps protect against overloads and short circuits.
• Current-Limiting Design: Helps reduce equipment damage.
• Fast Fault Clearing: Provides improved protection.
• High Interrupting Rating: 200 kA interrupting rating.
• Dual Voltage Rating: Rated for 600VAC and 300VDC applications.
• Ferrule Terminals: Ferrule terminals for secure clip mounting.
• Commercial and Industrial Use: Designed for commercial and industrial systems.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A6K40R
  
• Series: Amp-Trap® A6K-R
  
• Fuse Class: Class RK1
  
• Fuse Type: Fast-Acting
  
• Ampere Rating: 40A
  
• AC Voltage Rating: 600VAC
  
• DC Voltage Rating: 300VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Ferrule
  
• Mounting: Clip
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Diameter: 27 mm
  
• Length: 139.7 mm
  
• Product Weight: 0.1474 kg
  
• Product Group: Low Voltage UL/CSA Fuses
  

Material Compliance and Certifications

• UL and CSA Applications: The A6K40R is manufactured for low-voltage UL and CSA fuse applications requiring dependable overcurrent protection in commercial and industrial electrical systems.
  

Where It Works Best

The A6K40R is commonly used in:

• Branch circuit protection
• Feeder circuit protection
• Industrial control panels
• Commercial power distribution systems
• Manufacturing equipment
• HVAC systems
• Electrical distribution equipment
• Backup protection applications
• Systems with high available fault currents

Its fast-acting design makes it a good fit for applications where electrical equipment needs quick protection during overloads and short-circuit conditions.