A2K40R - 40Amp Fuse

A2K40R - 40Amp Fuse

The Mersen A2K40R Amp-Trap® fuse is made for electrical systems that need fast, reliable protection from overloads and short circuits. This 40 amp Class RK1 fuse reacts quickly when fault conditions occur, helping you protect equipment before damage spreads through the system. It’s commonly used in commercial and industrial applications where dependable circuit protection is important for keeping operations running smoothly.

Rated for both 250VAC and 250VDC systems, the A2K40R works well in a wide range of power distribution applications. The ferrule-style design installs easily in compatible fuse clips, and the compact body fits neatly into many panel layouts. Tin-plated copper terminals help provide solid electrical contact and added resistance to corrosion in demanding environments. With a 200 kA interrupting rating, this fast-acting Mersen fuse is well suited for systems with high available fault current where your equipment protection is critical.

Key Features and Benefits

• Fast-acting Class RK1 fuse for overcurrent and short-circuit protection
• Current-limiting design helps reduce damage to connected equipment
• 40 amp rating for branch and feeder circuit applications
• Rated for 250VAC and 250VDC systems
• 200 kA interrupting rating for high fault-current applications
• Ferrule terminal design for easy installation
• Tin-plated copper terminals for dependable conductivity
• Compact size works well in commercial and industrial equipment
• Durable PolyTube body construction
• RoHS compliant materials
  

Technical Specifications

• Manufacturer Part Number: A2K40R
  
• Product Series: A2K-R Amp-Trap®
  
• Fuse Class: Class RK1
  
• Fuse Type: Fast-Acting
  
• Ampere Rating: 40 A
  
• Rated Voltage AC: 250 VAC
  
• Rated Voltage DC: 250 VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA
  
• Mounting Type: Clip
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Diameter: 20.6 mm
  
• Product Length: 76.2 mm
  
• Product Weight: 0.0549 kg
  
• Compliance: RoHS Compliant
  

Material Compliance and Certifications

• The A2K40R fuse is manufactured with RoHS compliant materials and designed for reliable use in industrial and commercial electrical systems.
  

Where It Works Best

• This Mersen fast-acting fuse is commonly used in industrial control panels, HVAC equipment, motor control centers, manufacturing machinery, and commercial electrical distribution systems. It’s especially useful in applications where fast fault clearing can help you reduce equipment damage and minimize downtime.