A2D7R - 7 Amp Fuse

A2D7R - 7 Amp Fuse

If you’re protecting motors or branch circuits, you need a fuse that can handle startup surges without giving up protection when a real fault happens. The Mersen A2D7R Amp-Trap 2000® fuse is designed for exactly that job. This 7 amp Class RK1 time-delay fuse helps protect electrical systems from overloads and short circuits while still allowing normal motor in-rush currents during startup.

The A2D7R reacts quickly under heavy fault conditions to help limit damage to starters, switches, contactors, and other important components. That makes it a practical choice for industrial equipment, HVAC systems, control panels, and commercial electrical applications where downtime can quickly become expensive. It’s also commonly used as a replacement for older Class H, K, and RK5 fuses already installed in existing systems.

Key Features and Benefits

• 7 amp Class RK1 time-delay fuse: Designed for motor, feeder, and branch circuit protection.
• Startup surge handling: Handles temporary startup and in-rush currents without nuisance opening.
• Fast current-limiting protection: Responds quickly during short circuits.
• Equipment protection: Helps reduce damage to connected electrical equipment.
• High interrupting rating: Rated at 200 kA for high fault-current applications.
• Replacement compatibility: Direct replacement option for many Class H, K, and RK5 fuses.
• Ferrule terminal design: Supports easy installation.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A2D7R
  
• Series: Amp-Trap 2000® A2D-R
  
• Fuse Class: RK1
  
• Fuse Type: Time-Delay
  
• Amp Rating: 7A
  
• Voltage Rating: 250VAC / 250VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Mounting Style: Clip
  
• Body Material: PolyTube
  
• Product Diameter: 14.2 mm
  
• Product Length: 50.8 mm
  
• Product Weight: 0.0168 kg
  
• UPC/EAN: 782001990770
  

Material Compliance and Certifications

• ROHS Compliant: Supports environmental compliance requirements.
• UL/CSA applications: Designed for Low Voltage fuse applications.
• Commercial and industrial use: Suitable for electrical protection systems.
  

Where It Works Best

• The Mersen A2D7R is well suited for motor circuits, HVAC equipment, industrial machinery, manufacturing systems, feeder circuits, and electrical distribution panels where reliable overcurrent protection is important. Its time-delay performance makes it especially useful in applications with temporary startup surges or cycling motor loads.