Fuse Amp-Trap® 600V 3000A Time-Delay Class L A4BY Series

The Fuse Amp-Trap® A4BY Series is a Class L time-delay fuse designed for protecting service entrance equipment, feeder circuits, and circuit breakers. This 600V fuse supports continuous currents up to 3000 amperes and features a 4-second minimum time delay at 500% rating to allow normal current surges while coordinating with ground fault relays. Ideal for electrical distributors and switchgear suppliers, it is suitable for applications including mains feeders, load centers, panelboards, switchboards, and metering centers.

Specifications

• Voltage Rating: 600VAC, 300VDC
• Amperage Rating: 3000 A
• Interrupt Rating: 200 kA
• Fuse Class: Class L
• Connection: Blade
• Mounting Type: Bolted
• Dimensions (L x W x H): 10.75 in x 5 in x 5 in
• Diameter: 5 inches
• Product Weight: 19.3 lbs
• Insulation Material: GMG
• Manufacturer Part Number: A4BY3000

Features

• Current-limiting design to protect equipment
• 4-second minimum time delay at 500% rating for surge tolerance
• Unique dimensions prevent replacement by other fuse classes
• Blade stamped catalog numbers for permanent identification
• Glass melamine body and plated terminals provide reliability in harsh environments
• UL and CSA listed for safety and performance compliance

Downloads & Links

• Spec Sheet
• Drawings
• Curves 1
• Spec Sheet FR
• Curves 2