A6T125 - 125 Amp Fuse

A6T125 - 125 Amp Fuse

The Mersen A6T125 Amp-Trap® Class T Fast-Acting Fuse is built for your electrical systems that need quick, dependable protection when overloads or short circuits happen. Rated at 125 Amps, this Class T fuse is commonly used in commercial and industrial applications where protecting valuable equipment and reducing downtime are part of keeping operations running smoothly.

When fault conditions occur, the A6T125 reacts quickly to help reduce the amount of fault current moving through the circuit. That fast response can help you protect transformers, disconnects, switchboards, control panels, HVAC systems, and other sensitive electrical equipment used in power distribution and industrial environments. In facilities where uptime matters, having the right overcurrent protection in place can help prevent bigger electrical problems down the line.

Part of Mersen’s trusted Amp-Trap® A6T series, the A6T125 features a glass melamine body designed for dependable dimensional stability in demanding electrical applications. Permanently stamped catalog markings also make identification easier during inspections and maintenance work.

With a high 200 kA interrupting rating, the A6T125 is a practical choice for applications where high available fault currents are present and reliable fault protection is essential.

Key Features and Benefits

• 125 Amp Class T fast-acting fuse
• Helps protect against overloads and short circuits
• High current-limiting performance
• Compact size helps save panel space
• Fast fault clearing for dependable protection
• High 200 kA interrupting rating
• Rated for 600VAC and 300VDC applications
• Blade-style terminals with bolted mounting
• Glass melamine body for dimensional stability

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A6T125
  
• Series: Amp-Trap® A6T
  
• Fuse Class: Class T
  
• Fuse Type: Fast-Acting
  
• Ampere Rating: 125A
  
• AC Voltage Rating: 600VAC
  
• DC Voltage Rating: 300VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Blade
  
• Mounting: Bolted
  
• Terminal Material: Copper
  
• Body Material: GMG (Glass Melamine)
  
• Diameter: 27.2 mm
  
• Length: 82.8 mm
  
• Product Weight: 0.0966 kg
  
• Product Group: Low Voltage UL/CSA Fuses
  

Material Compliance and Certifications

• The A6T125 is manufactured for low-voltage UL and CSA fuse applications requiring dependable overcurrent protection in commercial and industrial electrical systems.
  

Where It Works Best

• Industrial control panels
• Branch circuit protection
• Power distribution systems
• Commercial electrical equipment
• Manufacturing equipment
• HVAC systems
• Motor circuit protection
• Transformer protection
• Electrical switchboards
• Applications with high available fault currents