A4BT1000 - 1000 Amp Fuse

A4BT1000 - 1000 Amp Fuse

When your electrical system demands serious protection, the Mersen A4BT1000 Amp-Trap® Class L Time-Delay Fuse is built to deliver dependable performance where it matters most. Designed for high-capacity industrial and commercial power distribution systems, this 1000A fuse helps protect mains, feeders, transformers, and large motor circuits from damaging overcurrents and short circuits. Its time-delay construction allows temporary inrush currents during motor startups to pass without unnecessary fuse operation, helping reduce downtime and nuisance interruptions in critical applications.

Whether you are maintaining a manufacturing facility, servicing heavy-duty HVAC equipment, or upgrading industrial power systems, this Mersen Class L fuse delivers the protection and reliability professionals count on every day.

Key Features and Benefits

• Handles high-capacity electrical protection applications up to 1000 amps
• Time-delay design helps prevent nuisance fuse openings during equipment startup
• Ideal for large motors and systems with high inrush current demands
• High 200 kA interrupting rating adds another layer of protection during fault conditions
• Current-limiting Class L fuse helps minimize potential equipment damage
• Supports both 600VAC and 500VDC applications
• Can be applied to normal loads up to its full ampere rating
• Silver-plated copper blade terminals improve conductivity and resist corrosion
• Bolted mounting configuration helps provide a secure and stable installation

Technical Specifications

• Catalog Number: A4BT1000
  
• Manufacturer: Mersen
  
• Series: A4BT – Class L – Time-Delay
  
• Product Type: Amp-Trap® Fuse
  
• Fuse Class: Class L
  
• Ampere Rating: 1000A
  
• Rated AC Voltage: 600VAC
  
• Rated DC Voltage: 500VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Fuse Characteristic: Time Delay
  
• Mounting Type: Bolted
  
• Terminal Type: Blade
  
• Terminal Material: Silver-Plated Copper
  
• Body Material: GMG
  
• Product Diameter: 63.5 mm
  
• Product Length: 273 mm
  
• Product Weight: 1.9368 kg
  
• UPC/EAN: 782001939922
  
• Product Group: Low Voltage UL/CSA Fuses
  
• RoHS Compliant: Yes
  

Material Compliance and Certifications

• The Mersen A4BT1000 fuse is RoHS compliant, helping support modern environmental and material compliance requirements.
• It is designed for use in low-voltage UL/CSA fuse applications and built to meet the performance expectations of today’s industrial electrical systems.
  

Where It Works Best

• Industrial motor control systems
• Main service entrance protection
• Electrical distribution equipment
• Manufacturing and processing facilities
• Large HVAC and refrigeration systems
• Transformer protection applications
• Commercial power distribution systems
• Heavy-duty feeder circuits