A6D450R - 450Amp Fuse

A6D450R - 450Amp Fuse

The Mersen A6D450R Amp-Trap 2000® Class RK1 time-delay fuse is made for your electrical systems that need dependable protection without unnecessary shutdowns. Rated at 450 amps for both 600VAC and 600VDC applications, this fuse helps protect your motors, feeders, branch circuits, and other power distribution equipment from overloads and short circuits while still allowing normal startup currents to pass.

In many industrial systems, motors draw extra current for a brief moment during startup. The A6D450R is designed to handle those temporary surges without opening too soon, helping your equipment continue running normally during startup conditions. If a major fault occurs, the fuse responds quickly to help limit damage to motor starters, switches, contactors, and connected electrical equipment.

This fuse is part of Mersen’s Amp-Trap 2000® A6D-R series and is commonly installed in manufacturing plants, HVAC systems, motor control centers, pumps, compressors, and commercial power distribution equipment. It can also replace older Class H, K, and RK5 fuses already found in many existing systems, making upgrades and routine maintenance easier.

The built-in SmartSpot® indication system gives technicians a clear visual indication when the fuse has opened, helping reduce troubleshooting time during service work. Blade-style terminals with tin-plated copper connections provide dependable conductivity, while the PolyTube body is designed for long service life in demanding commercial and industrial environments.

Key Features and Benefits

• 450A Class RK1 time-delay fuse: For industrial and commercial applications.
• Equipment protection: Helps protect motors, feeders, branch circuits, and distribution equipment.
• Time-delay design: Helps reduce nuisance openings during motor startup.
• Fast current-limiting protection: During fault conditions.
• SmartSpot® indication: Helps simplify troubleshooting and maintenance.
• 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.
• Blade-style terminals: With tin-plated copper connections.
• PolyTube insulating body: Designed for demanding environments.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A6D450R
  
• Series: Amp-Trap 2000® A6D-R
  
• Product Type: Time-Delay Fuse
  
• Fuse Class: RK1
  
• Ampere Rating: 450A
  
• Voltage Rating: 600VAC / 600VDC
  
• Frequency: 50/60 Hz
  
• Current Type: AC/DC
  
• Interrupting Rating: 200 kA
  
• Fuse Characteristic: Time Delay
  
• Indication System: SmartSpot®
  
• Mounting Type: Clip
  
• Terminal Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Diameter: 3.12 in
  
• Product Length: 13.38 in
  
• Product Weight: 4.82 lb
  
• UPC/EAN: 782001992286
  

Material Compliance and Certifications

• The Mersen A6D450R fuse is part of the Amp-Trap 2000® low-voltage fuse family and is designed for UL and CSA electrical applications.
  

Where It Works Best

The A6D450R is commonly used in applications such as:

• Motor control centers (MCCs)
• Industrial manufacturing equipment
• HVAC and refrigeration systems
• Pumps and compressors
• Conveyor and automation systems
• Commercial power distribution panels
• Feeders and branch circuits
• Heavy-duty machinery
• Retrofit projects replacing older Class H, K, or RK5 fuses
• Electrical systems with high available fault currents

For facilities looking to improve equipment protection and reduce unnecessary interruptions, the Mersen A6D450R provides reliable performance for demanding industrial and commercial electrical systems.