A4BY1400 - 1400Amp Fuse

A4BY1400 - 1400Amp Fuse

The A4BY1400 fuse is built to handle heavy-duty electrical systems without compromise. Rated at 1400 amps, this time-delay Class L fuse protects your service entrance panels, feeder circuits, and large breakers from overloads and short circuits—while letting normal startup surges pass through without tripping. Unlike standard fuses, the time-delay design gives motors, transformers, and other equipment a few extra seconds to start up, so you avoid unnecessary shutdowns. At the same time, it stays ready to interrupt serious faults, keeping your system safe under high-stress conditions. Installation is straightforward thanks to its bolted mounting and blade-style terminals made from silver-plated copper. The GMG insulated body provides long-lasting performance, even in demanding industrial environments.

Key Features and Benefits

• High-capacity protection: Rated for 1400A to keep circuits safe.
• Time-delay design: Allows temporary surges without unnecessary trips.
• AC/DC compatible: Works with 600VAC and 300VDC systems.
• High fault handling: Interrupting rating of 200 kA.
• Durable connections: Blade terminals with silver-plated copper.
• Built to last: GMG insulated body withstands heavy-duty use.

Technical Specifications

• Fuse Class: Class L
• Ampere Rating: 1400A
• Voltage Rating: 600VAC / 300VDC
• Frequency: 50/60 Hz
• Mounting: Bolted
• Terminal Type: Blade
• Interrupting Rating: 200 kA AC
• Dimensions: 273 mm length × 76.2 mm diameter
• Product Weight: 2.7 kg

Material Compliance and Certifications

• UL listed for low-voltage applications
• Silver-plated copper terminals for reliable conductivity
• GMG insulating material for safe and consistent performance

Where It Works Best

• The A4BY1400 is perfect for industrial and commercial settings where heavy startup loads and high fault currents are common. It’s well-suited for service entrances, feeder circuits, and large distribution panels, helping keep operations running smoothly with minimal downtime.