A6D125R - 125Amp Fuse

A6D125R - 125Amp Fuse

The Mersen A6D125R Amp-Trap 2000® fuse is designed for your electrical systems that need dependable protection without sacrificing performance. Built for industrial and commercial applications, this 125 amp Class RK1 time-delay fuse helps protect your motors, feeders, and branch circuits from damaging overloads and short circuits while still handling the temporary inrush currents that occur during motor startup. That means fewer nuisance openings and better protection for valuable electrical equipment.

What makes the A6D125R stand out is its combination of fast fault response and long-term reliability. In the event of a severe short circuit, the fuse reacts quickly to help limit damage to motor starters, switches, and other critical components. At the same time, the built-in SmartSpot® indicator gives maintenance personnel a quick visual signal when the fuse has opened, making troubleshooting faster and reducing unnecessary downtime.

Key Features and Benefits

• 125A Class RK1 time-delay fuse: Helps protect motors, feeders, and branch circuits.
• Handles temporary motor startup currents: Helps prevent unnecessary opening during startup.
• Fast response during high fault conditions: Helps protect electrical equipment.
• SmartSpot® blown fuse indicator: Makes maintenance and troubleshooting easier.
• 600VAC / 600VDC rated: Designed for AC and DC applications.
• High 200kA interrupting rating: Suitable for demanding fault-current conditions.
• Compatible replacement: Can replace Class H, K, and RK5 fuses.
• Tin-plated copper blade terminals: Provide dependable conductivity.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A6D125R
  
• Series: Amp-Trap 2000® A6D-R
  
• Fuse Class: RK1
  
• Type: Time-Delay
  
• Amp Rating: 125A
  
• Voltage Rating: 600VAC / 600VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Mounting: Clip
  
• Terminal Type: Blade
  
• Terminal Material: Tin-Plated Copper
  
• Indication Type: SmartSpot®
  
• Body Material: PolyTube
  
• Length: 244.6 mm
  
• Diameter: 46 mm
  
• Weight: 0.6622 kg
  
• UPC/EAN: 782001992156
  

Material Compliance and Certifications

• Low-voltage UL/CSA applications: Manufactured for low-voltage UL/CSA fuse applications.
• Commercial and industrial systems: Designed to meet the performance demands of commercial and industrial electrical systems.
• Durable construction: Supports reliable operation in high-demand environments.
  

Where It Works Best

• Industrial motor circuits
• Commercial electrical distribution systems
• HVAC equipment
• Manufacturing facilities
• Industrial control panels
• Feeders and branch circuits
• Processing and automation equipment
• Applications where equipment reliability matters and motor startup currents are common