A6K350R - 350Amp Fuse

A6K350R - 350Amp Fuse

When electrical systems are exposed to high fault currents, having the right protection in place can make all the difference. The Mersen A6K350R Amp-Trap® Class RK1 Fast-Acting Fuse is designed to react quickly when overcurrent conditions occur, helping protect valuable equipment before damage spreads through your system. Built for demanding industrial and commercial applications, this 350A fuse combines fast-acting performance with current-limiting protection to help reduce downtime, improve safety, and keep operations moving efficiently.

Rated for 600VAC and 300VDC, the A6K350R is a dependable solution for branch and feeder circuit protection, motor circuits, control panels, and heavy-duty electrical distribution systems. Its Class RK1 design offers a higher level of protection than many standard fuse types, making it especially effective in environments where high available short-circuit currents are present. The rugged PolyTube body and tin-plated copper blade terminals are built for long-lasting durability and reliable conductivity, even in demanding operating conditions.

Whether you're maintaining an industrial facility, upgrading electrical infrastructure, or replacing a critical fuse in a power distribution system, the Mersen A6K350R delivers the fast response and dependable performance professionals rely on to protect electrical equipment and reduce costly interruptions.

Key Features and Benefits

• Fast-Acting Circuit Protection: Quickly interrupts overcurrent and short-circuit conditions to help minimize damage to electrical equipment.
• Class RK1 Current-Limiting Design: Reduces let-through current and helps protect downstream components during fault conditions.
• 350 Amp Capacity: Ideal for high-capacity commercial and industrial electrical systems.
• Dual Voltage Rating: Rated for 600VAC and 300VDC applications for greater installation flexibility.
• High Interrupting Capacity: Handles up to 200kA AC interrupting rating, making it suitable for systems with high available fault current.
• Built for Reliability: Durable PolyTube construction and tin-plated copper terminals help support long service life.
• Blade Terminal Configuration: Designed for clip mounting applications, allowing secure installation and easier replacement.
• Helps Reduce Downtime: Fast fault-clearing action can help prevent extensive equipment damage and unexpected shutdowns.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A6K350R
  
• Product Series: A6K-R
  
• Product Type: Fast-Acting Fuse
  
• Fuse Class: Class RK1
  
• Ampere Rating: 350A
  
• Rated Voltage AC: 600VAC
  
• Rated Voltage DC: 300VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200kA AC
  
• Fuse Characteristic: Fast-Acting
  
• Mounting Type: Clip
  
• Terminal Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Diameter: 65.1 mm
  
• Product Length: 295.4 mm
  
• Product Weight: 1.4606 kg
  

Material Compliance and Certifications

• UL Rated: For 600VAC / 300VDC applications.
• Class RK1 Performance Standards: Designed to meet Class RK1 fuse performance standards.
• Low-Voltage UL/CSA Applications: Suitable for low-voltage UL/CSA fuse applications.
• Current-Limiting Design: Helps improve electrical system protection.
• Durable Construction: Manufactured using durable insulating and conductive materials for dependable long-term performance.
  

Where It Works Best

• Branch and feeder circuit protection
• Industrial control panels
• Motor protection systems
• Manufacturing and processing facilities
• Commercial electrical distribution equipment
• Heavy-duty power systems
• Backup protection applications
• High fault-current industrial environments