A6T800 - 800 Amp Fuse

A6T800 - 800 Amp Fuse

When your electrical systems are exposed to high fault currents, having the right fuse in place can make all the difference. The Mersen A6T800 Class T Fast-Acting Fuse is built to deliver rapid, dependable overcurrent protection for demanding commercial and industrial applications where equipment uptime and system safety are essential. Designed with a compact Class T footprint and powerful current-limiting performance, this 800A fuse reacts quickly to short circuits and overload conditions before they can damage expensive electrical equipment.

What makes the A6T800 especially valuable is its combination of speed, space-saving design, and high interrupting capacity. Its fast-acting protection helps reduce downtime and protects sensitive electrical components from excessive thermal and mechanical stress. Whether it’s protecting switchboards, UPS systems, motor control centers, or industrial distribution equipment, the Mersen A6T800 offers the confidence professionals expect in critical power applications.

Key Features and Benefits

• Fast-Acting Protection: Quickly clears overloads and short circuits to help minimize damage to electrical equipment.
• High Current Limitation: Reduces destructive thermal and mechanical stress during fault conditions.
• Compact Class T Design: Saves valuable installation space inside panels and switchgear.
• 800 Amp Capacity: Ideal for heavy-duty commercial and industrial power distribution systems.
• 600VAC / 300VDC Rated: Suitable for both AC and DC electrical applications.
• 200kA Interrupting Rating: Provides dependable protection in high available fault current environments.
• Blade-Style Copper Terminals: Supports secure bolted connections and efficient conductivity.
• Glass Melamine Construction: Helps maintain dimensional stability under demanding operating conditions.
• Permanent Fuse Identification: Catalog numbers stamped directly into the blades for easy long-term identification.
• Prevents Incorrect Fuse Replacement: Unique Class T dimensions help eliminate substitution with lower-rated fuses.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A6T800
  
• Product Series: A6T – Class T – Fast-Acting
  
• Product Type: Class T Fast-Acting Fuse
  
• Ampere Rating: 800A
  
• Voltage Rating AC: 600VAC
  
• Voltage Rating DC: 300VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: Class T
  
• Speed Characteristic: Fast-Acting
  
• Interrupting Rating: 200kA AC
  
• Mounting Type: Bolted
  
• Connection Type: Blade
  
• Connection Material: Copper
  
• Body Material: GMG (Glass Melamine)
  
• Product Diameter: 63.5 mm
  
• Product Length: 110 mm
  
• Product Weight: 0.5897 kg
  
• UPC Code: 782001891589
  
• Product Group: Low Voltage UL/CSA Fuses
  

Material Compliance and Certifications

• Industry Standards: The Mersen A6T800 is manufactured for use in low-voltage UL and CSA electrical protection systems and is designed to meet demanding industry standards for circuit protection and current limitation.
• Quality Construction: Its high-quality insulating materials and copper blade terminals support long service life and dependable operation in commercial and industrial electrical environments.
  

Where It Works Best

• Industrial power distribution systems
• Commercial service entrance equipment
• Switchboards and panelboards
• Motor control centers
• UPS and backup power systems
• Manufacturing facilities
• Renewable energy systems
• Critical infrastructure applications