A4BT650 - 650 Amp Fuse

A4BT650 - 650 Amp Fuse

The Mersen A4BT650 Amp-Trap® Class L time-delay fuse is built for electrical systems that need dependable protection without unnecessary downtime. Designed for high-amperage applications, this 650A fuse helps yoiu protect mains, feeders, transformers, and large motors from damaging overcurrent and short-circuit conditions while still allowing temporary startup surges to pass through normally. That means fewer nuisance openings and more reliable operation in demanding commercial and industrial environments.

Whether you're installing it in a manufacturing facility, processing plant, commercial building, or power distribution system, the A4BT650 delivers the kind of reliable circuit protection electricians and maintenance teams count on every day.

Key Features and Benefits

• 650A Class L time-delay fuse for industrial and commercial power systems
• Helps reduce nuisance openings caused by motor startup currents
• Current-limiting protection helps minimize damage during short circuits
• Rated for 600VAC and 500VDC applications
• High 200 kA interrupting rating for demanding fault-current conditions
• Silver-plated copper contacts support efficient conductivity

Technical Specifications

• Catalog Number: A4BT650
  
• Series: A4BT – Class L – Time-Delay
  
• Fuse Class: Class L
  
• Ampere Rating: 650A
  
• Voltage Rating AC: 600VAC
  
• Voltage Rating DC: 500VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Fuse Type: Time Delay
  
• Mounting Type: Bolted
  
• Terminal Type: Blade
  
• Terminal Material: Silver-Plated Copper
  
• Body Material: GMG
  
• Product Length: 219.2 mm
  
• Product Diameter: 76.2 mm
  
• Product Weight: 1.6919 kg
  
• UPC: 782001939878
  

Material Compliance and Certifications

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

Where It Works Best

• The A4BT650 works well in high-demand electrical systems where reliability matters. It’s commonly used in industrial facilities, commercial buildings, motor control systems, switchgear, feeder circuits, and heavy-duty power distribution equipment.