A2K350R - 350Amp Fuse

A2K350R - 350Amp Fuse

When your electrical systems are exposed to high fault currents, you need protection that reacts fast and performs consistently. The Mersen A2K350R Amp-Trap® Class RK1 Fast-Acting Fuse is built for exactly that kind of demanding environment. Designed to provide superior current-limiting protection, this 350 Amp fuse helps protect branch circuits, feeder circuits, and critical electrical equipment from damaging overloads and short circuits before they turn into costly downtime or equipment failure.

Engineered for both 250VAC and 250VDC applications, the A2K350R delivers the fast response industrial and commercial facilities rely on to keep systems operating safely and efficiently. Its high 200 kA interrupting rating makes it an excellent solution for installations where available fault current is high and dependable overcurrent protection is essential. The durable PolyTube body construction and tin-plated copper blade terminals help support long service life, dependable conductivity, and reliable performance in tough operating conditions.

Whether you're maintaining a manufacturing facility, servicing switchgear, upgrading a motor control center, or protecting power distribution equipment, the Mersen A2K350R fuse offers the performance and protection professionals trust for mission-critical electrical systems.

Key Features and Benefits

• Fast-acting Class RK1 fuse: Designed for rapid fault interruption.
• Helps reduce equipment damage: Caused by short circuits and overloads.
• Current-limiting design: Improves overall system protection.
• 350 Amp rating: Ideal for industrial and commercial power applications.
• Rated for both 250VAC and 250VDC systems: For greater versatility.
• High 200 kA interrupting capacity: For demanding fault-current environments.
• Durable PolyTube body: Helps withstand challenging operating conditions.
• Tin-plated copper blade terminals: Provide reliable conductivity and corrosion resistance.
• Trusted Amp-Trap® fuse technology: From Mersen.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2K350R
  
• Series: A2K-R – Class RK1 – Fast-Acting
  
• Fuse Class: RK1
  
• Ampere Rating: 350A
  
• Voltage Rating AC: 250VAC
  
• Voltage Rating DC: 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Fuse Type: Fast-Acting
  
• Terminal Type: Blade
  
• Mounting Type: Clip Mount
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Length: 219.2 mm
  
• Product Diameter: 52.4 mm
  
• Product Weight: 0.762 kg
  
• UPC: 782001915353
  

Material Compliance and Certifications

• RoHS Compliant
• Suitable for UL applications
• Designed for both AC and DC circuit protection systems
  

Where It Works Best

• Industrial manufacturing facilities
• Motor control centers (MCCs)
• Switchboards and switchgear
• Branch and feeder circuit protection
• Commercial electrical distribution systems
• Heavy-duty machinery and processing equipment
• Utility and infrastructure applications