The Mersen A4BY800 Amp-Trap® Class L Time-Delay Fuse provides reliable overcurrent protection for high-capacity electrical circuits. It features unique dimensions and blade-stamped catalog numbers to prevent improper replacement in industrial applications including switchboards, panelboards, and metering centers.

• Rating: 800 amperes with 600 VAC/300 VDC voltage capacity for demanding power distribution requirements
• Body: Glass melamine with dual element design and silver-plated copper terminals for enhanced durability in harsh industrial environments
• Performance: Time-delay characteristic (slow blow) with 200 kA interrupting capacity to handle severe fault conditions effectively
• Installation: Bolted mounting with blade-type terminals for secure connection and reliable electrical circuit conductivity
• Compliance: UL Listed to Standard 248-10 and CSA Certified to Standard C22.2 for assured safety and performance

Features

• 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

Applications

• Mains
• Feeders
• Circuit Breakers
• Load centers
• Panelboards
• Switchboards
• Metering Centers

Approvals & Standards

• Mersen Self-Certification, UL Listed to Standard 248-10, File E2137
• CSA Certified to Standard C22.2, No. 248.10 IEC 269-2-1
• DC Tested to UL 248 limits (Mersen Self-Certified)

Specifications

• Rated voltage AC UL: 600 V
• Rated voltage DC UL: 300 V
• Ampere Rating: 800 A
• ROHS Compliant: Yes
• Fuse Class: Class L
• Speed/Characteristic: Time Delay
• Mounting: Bolted
• AC Max I.R./Breaking Capacity: I1: 200 kA
• Connection/Terminal Material: Silver-Plated Copper
• Connection/Terminal Type: Blade
• Body/Insulating Material: GMG

Product Dimensions

• Product Weight: 3.95 lb
• Product Diameter: 2 in
• Product Length: 8.63 in

Packaging Dimensions

• Sell Pack Quantity: 1 Each
• Sell Pack Weight: 4.15 lb
• Sell Pack Width: 2.5 in
• Sell Pack Length: 8.75 in
• Sell Pack Height: 2.38 in

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