Fuse Amp-Trap® 600V 2000A 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, circuit breakers, load centers, panelboards, switchboards, and metering centers. Manufactured by Mersen, this fuse is rated for 600 volts and 2000 amperes with a high interrupting rating of 200 kA. It is engineered to allow continuous current up to its ampere rating and provides a 4-second minimum time delay at 500% rating, enabling it to pass normal current surges and coordinate effectively with ground fault relays. This product is suitable for electrical distributors and switchgear suppliers seeking reliable wire and cable protection and lighting solutions integration.

Specifications

• Manufacturer: Mersen
• Manufacturer Part #: A4BY2000
• Amperage Rating: 2000 A
• Voltage Rating: 600 VAC / 300 VDC
• Interrupt Rating: 200 kA
• Fuse Class: Class L
• Connection: Blade
• Mounting Type: Bolted
• Dimensions (L x W x H): 10.75 in x 3.5 in x 3.5 in
• Diameter: 3.5 inches
• Product Weight: 8.46 lbs
• Insulation Material: GMG

Features

• 100% rated device suitable for continuous currents up to ampere rating
• 4-second minimum time delay at 500% rating for surge tolerance and relay coordination
• Unique dimensions prevent replacement by other fuse classes
• Blade stamped catalog numbers for permanent identification
• Glass melamine body and plated terminals provide superior reliability in harsh environments
• Current-limiting performance
• UL/CSA listed and self-certified for DC applications

Downloads & Links

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