A3T70 - 70Amp Fuse

A3T70 - 70Amp Fuse

When electrical systems demand fast, dependable protection, the Mersen A3T70 Class T Fast-Acting Fuse delivers the performance professionals trust. Built for high-speed response in critical power distribution applications, this 70 Amp Class T fuse is designed to help protect sensitive electrical equipment from damaging overloads and short circuits before they become costly problems. Its compact footprint makes it ideal for tight electrical enclosures, while its high current-limiting capability helps reduce let-through energy during fault events, improving overall system protection. Whether you’re maintaining industrial machinery, upgrading commercial electrical systems, or protecting mission-critical equipment, the A3T70 offers the reliability and performance needed to keep operations running safely and efficiently.

Engineered with a durable glass melamine body for added dimensional stability, the A3T70 also features copper blade terminals and a bolted mounting design for secure installation in demanding environments.

Key Features and Benefits

• Fast-acting Class T fuse designed for rapid short-circuit and overload protection
• High current-limiting capability helps reduce potential equipment damage
• Compact size allows installation in space-conscious electrical panels and systems
• Durable glass melamine body improves stability and long-term performance
• Copper blade terminals provide dependable electrical conductivity
• Bolted mounting design supports secure installation in demanding applications
• Permanent fuse markings simplify maintenance and replacement identification
• Suitable for both AC and DC electrical systems
• High interrupting rating helps protect equipment in high fault-current environments
• RoHS compliant for environmentally responsible applications

Technical Specifications

• Catalog Number: A3T70
  
• Series: A3T – Class T – Fast-Acting
  
• Fuse Class: Class T
  
• Ampere Rating: 70A
  
• Voltage Rating: 300VAC / 160VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Fuse Characteristic: Fast-Acting
  
• Mounting Type: Bolted
  
• Terminal Type: Blade
  
• Terminal Material: Copper
  
• Body Material: GMG Glass Melamine
  
• Product Diameter: 20.6 mm
  
• Product Length: 54.9 mm
  
• Product Weight: 0.034 kg
  
• Product Group: Low Voltage UL/CSA Fuses
  

Material Compliance and Certifications

• RoHS Compliant
• Designed for UL low-voltage fuse applications
  

Where It Works Best

• The Mersen A3T70 fast-acting fuse is ideal for commercial and industrial electrical systems where quick fault interruption and high current limitation are critical.
• Common applications include power distribution equipment, industrial control panels, UPS systems, motor protection circuits, HVAC systems, and manufacturing equipment.