A4BY1350 - 1350Amp Fuse

A4BY1350 - 1350Amp Fuse

The Mersen A4BY1350 Amp-Trap® Class L Time-Delay Fuse is engineered to provide dependable overcurrent protection for your high-capacity electrical distribution systems operating in demanding commercial and industrial environments. Rated at 1350 amps with a 600VAC and 300VDC capacity, this fuse is specifically designed to help you protect service entrance equipment, feeder circuits, and circuit breakers from damaging overloads and short circuits. Its time-delay characteristic allows temporary inrush currents and motor startup surges to pass without nuisance opening, making it an excellent choice for systems that require both reliability and selective coordination.

Key Features and Benefits

• 1350 Amp Current Rating – Designed for high-capacity power distribution and heavy-duty electrical systems.
• Time-Delay Protection – A minimum 4-second delay at 500% rating helps accommodate harmless startup and inrush currents.
• Class L Fuse Design – Ideal for protecting service entrance equipment, feeder circuits, and large circuit breakers.
• 600VAC / 300VDC Rated – Suitable for both AC and DC applications in industrial and commercial settings.
• 200 kA Interrupting Rating – Provides high fault-clearing capability for enhanced system protection.
• 100% Rated Device – Can continuously operate up to its full ampere rating without derating concerns.
• Silver-Plated Copper Blade Terminals – Promotes strong conductivity and reliable electrical connections.
• Bolted Mounting Configuration – Helps ensure secure installation in high-current applications.
• Selective Coordination Support – Coordinates effectively with ground fault relays and downstream protective devices.

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A4BY1350
  
• Product Type: Class L Time-Delay Fuse
  
• Series: A4BY Amp-Trap®
  
• Ampere Rating: 1350A
  
• Voltage Rating AC: 600VAC
  
• Voltage Rating DC: 300VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: Class L
  
• Fuse Characteristic: Time Delay
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Blade
  
• Terminal Material: Silver-Plated Copper
  
• Mounting Type: Bolted
  
• Body Material: GMG
  
• Product Length: 273 mm
  
• Product Diameter: 76.2 mm
  
• Product Weight: 2.7079 kg
  
• UPC: 782001939342
  

Material Compliance and Certifications

• The A4BY1350 fuse is manufactured for low-voltage UL/CSA fuse applications and is designed to meet demanding industry performance standards for overcurrent protection. Its high interrupting capacity and Class L construction make it suitable for use in systems requiring dependable fault-current protection and coordinated circuit safety.

Where It Works Best

• Service entrance equipment
• Main distribution panels
• Industrial feeder circuits
• Large motor control systems
• Manufacturing facilities
• Data centers
• Utility and infrastructure projects
• Power distribution equipment
• High-capacity circuit breaker protection