A2K12R - 12Amp Fuse

A2K12R - 12Amp Fuse

The Mersen A2K12R is a fast-acting Class RK1 fuse made for protecting electrical circuits from overloads and short circuits before they cause larger problems. With a 12 amp rating and support for both 250VAC and 250VDC systems, this fuse is commonly used in commercial and industrial equipment where dependable circuit protection is important.

One of the biggest advantages of the A2K12R is how quickly it reacts during a fault condition. In applications with high available short-circuit current, fast protection can help reduce damage to connected equipment and limit downtime. Its 200 kA interrupting rating makes it suitable for demanding electrical systems where safety and reliability are a priority.

The compact ferrule design allows for simple installation in compatible fuse clips, and the tin-plated copper terminals are built to provide solid electrical contact while helping resist corrosion over time.

Key Features and Benefits

• Fast-acting fuse: For quick overload and short-circuit protection.
• Class RK1 current-limiting design: Helps improve circuit protection performance.
• 12 amp rating: Suitable for commercial and industrial electrical applications.
• Rated for 250VAC and 250VDC: Supports both AC and DC systems.
• High 200 kA interrupting capacity: Designed for demanding fault-current environments.
• Ferrule terminal construction: Allows easy installation in compatible fuse clips.
• Tin-plated copper terminals: Provides reliable conductivity and corrosion resistance.
• Compact design: Works well in control panels and electrical equipment.
• Protects sensitive electrical components: Helps reduce potential damage during fault conditions.
  

Technical Specifications

• Catalog Number: A2K12R
  
• Manufacturer: Mersen
  
• Series: A2K-R – Class RK1 – Fast-Acting
  
• Ampere Rating: 12A
  
• Voltage Rating: 250VAC / 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Fuse Class: RK1
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Mounting Type: Clip
  
• Product Diameter: 14.3 mm
  
• Product Length: 50.8 mm
  
• Body Material: GMG
  

Material Compliance and Certifications

• RoHS Compliant: Supports environmental compliance requirements.
• UL and CSA low-voltage fuse applications: Designed for dependable industrial and commercial circuit protection.
  

Where It Works Best

• Industrial machinery
• Control panels
• Motor control centers
• Branch and feeder circuits
• Commercial electrical systems
• OEM equipment
• Backup protection for sensitive electrical devices