A6D3R - 3 Amp Fuse

A6D3R - 3 Amp Fuse

The Mersen A6D3R Amp-Trap 2000® Class RK1 time-delay fuse is designed for electrical systems that need reliable protection without unnecessary interruptions. Rated at 3 amps for both 600VAC and 600VDC applications, this fuse helps protect your motors, feeders, branch circuits, and other electrical equipment from overloads and short circuits while still allowing temporary startup surges to pass normally.

In many industrial and commercial systems, motors draw extra current for a short time during startup. Standard fuses can sometimes react too quickly and create avoidable downtime. The A6D3R is built to handle those brief inrush currents while still opening fast during serious fault conditions. That helps you protect switches, motor starters, contactors, and connected equipment without disrupting normal operation.

The A6D3R is part of Mersen’s Amp-Trap 2000® A6D-R series and is commonly used in HVAC equipment, manufacturing systems, motor control centers, pumps, and commercial distribution panels. It can also replace older Class H, K, and RK5 fuses already installed in existing systems, making maintenance and upgrades easier for electricians and facility teams.

Its ferrule-style design works with clip mounting applications, while the tin-plated copper terminals help provide dependable electrical conductivity. The PolyTube body is designed for long service life in demanding environments where reliable circuit protection is important day after day.

Key Features and Benefits

• 3A Class RK1 time-delay fuse: For industrial and commercial applications.
• Motor and equipment protection: Helps protect motors, feeders, branch circuits, and electrical equipment.
• Time-delay performance: Helps prevent nuisance openings during equipment startup.
• Fast current-limiting protection: During high fault conditions.
• 600VAC / 600VDC rated: Rated for both 600VAC and 600VDC systems.
• High interrupting rating: 200 kA interrupting rating for high fault-current protection.
• Replacement compatibility: Replacement option for older Class H, K, and RK5 fuses.
• Ferrule-style terminals: For secure installation.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A6D3R
  
• Series: Amp-Trap 2000® A6D-R
  
• Product Type: Time-Delay Fuse
  
• Fuse Class: RK1
  
• Ampere Rating: 3A
  
• Voltage Rating: 600VAC / 600VDC
  
• Frequency: 50/60 Hz
  
• Current Type: AC/DC
  
• Interrupting Rating: 200 kA
  
• Fuse Characteristic: Time Delay
  
• Mounting Type: Clip
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Diameter: 20.6 mm
  
• Product Length: 127 mm
  
• Product Weight: 0.0662 kg
  
• UPC/EAN: 782001991685
  

Material Compliance and Certifications

• The Mersen A6D3R fuse is part of the Amp-Trap 2000® low-voltage fuse family and is designed for UL and CSA industrial electrical applications.
  

Where It Works Best

• The A6D3R is commonly used in applications such as:
  • Motor control centers (MCCs)
  • HVAC and refrigeration systems
  • Industrial machinery and automation equipment
  • Pumps and compressors
  • Conveyor systems
  • Manufacturing facilities
  • Commercial electrical distribution panels
  • Feeders and branch circuits
  • Retrofit projects replacing older Class H, K, or RK5 fuses
  • Electrical systems with high available fault currents