A3T125 - 125Amp Fuse

A3T125 - 125Amp Fuse

The Mersen A3T125 Class T Fast-Acting Fuse is built for electrical systems that need quick, reliable protection against overloads and short circuits. Rated at 125 amps, this Class T fuse is commonly used in commercial and industrial applications where protecting equipment and reducing downtime are priorities. Its fast-acting design responds quickly to fault conditions, helping you limit damage to connected components and electrical systems.

Because it has a compact footprint, the A3T125 works well in tight panel spaces without sacrificing performance. The fuse also offers strong current-limiting capability, which helps reduce the amount of energy that passes through during a fault. That can make a real difference when protecting sensitive equipment, motor controls, and power distribution systems. The durable glass melamine body is designed for long-term stability, while the copper blade terminals provide secure, dependable connections.

Whether you're using it in an industrial facility, commercial building, or OEM equipment setup, this fuse provides dependable protection in a compact, easy-to-install design.

Key Features and Benefits

• Fast-acting protection for overloads and short circuits
• High current-limiting performance helps reduce equipment damage
• Compact Class T design fits well in limited panel space
• 125A rating for commercial and industrial electrical systems
• Rated for 300VAC and 160VDC applications
• High 200 kA interrupting capacity
• Glass melamine body for added durability and stability
• Copper blade terminals with bolted mounting for secure installation
• Permanent catalog number markings for easy identification
• Suitable for both AC and DC protection applications
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A3T125
  
• Product Type: Class T Fast-Acting Fuse
  
• Ampere Rating: 125A
  
• AC Voltage Rating: 300VAC
  
• DC Voltage Rating: 160VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: Class T
  
• Fuse Characteristic: Fast-Acting
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Blade
  
• Mounting Type: Bolted
  
• Terminal Material: Copper
  
• Body Material: GMG Glass Melamine
  
• Product Length: 62 mm
  
• Product Diameter: 26.9 mm
  
• Product Weight: 0.073 kg
  
• UPC: 782001890209
  

Material Compliance and Certifications

• RoHS Compliant
• Designed for UL low-voltage fuse applications
• Suitable for AC and DC electrical systems
• Intended for commercial and industrial use
  

Where It Works Best

• Industrial power distribution systems
• Motor control centers
• Commercial electrical panels and switchboards
• UPS and backup power equipment
• OEM machinery and automation systems
• Renewable energy and DC power applications
• Control panels with sensitive electrical components