Mersen A4BY Class L Time-Delay Fuse 3000A 600VAC/300VDC Blade Terminal

Mersen A4BY Class L Time-Delay Fuse 3000A 600VAC/300VDC Blade Terminal

Professional High-Amperage Circuit Protection with Time-Delay Characteristics

The Mersen A4BY Class L Time-Delay Fuse delivers reliable circuit protection for high-amperage applications requiring 3000A capacity. Engineered for both AC and DC systems with 600VAC and 300VDC ratings, this blade terminal fuse features GMG body insulating material and silver-plated copper terminals for superior conductivity and durability. The time-delay characteristic provides enhanced protection against temporary overloads while ensuring fast clearing of fault conditions.

Professional Features & Benefits

• 3000A High-Amperage Rating: Handles substantial electrical loads for demanding commercial and industrial applications requiring maximum current capacity.
• Class L Time-Delay Design: Provides selective coordination and enhanced protection against temporary overloads while ensuring rapid fault clearing.
• Dual Voltage Capability: Supports both 600VAC and 300VDC systems for versatile installation flexibility across diverse electrical configurations.
• 200kA Breaking Capacity: Delivers exceptional fault interruption capability for high-fault current environments and critical system protection.
• Silver-Plated Copper Terminals: Ensures optimal electrical conductivity and corrosion resistance for long-term reliable connections.
• GMG Body Construction: Features advanced insulating material for superior arc quenching and thermal performance under extreme conditions.
• Blade Terminal Configuration: Provides secure bolted mounting for industrial-grade installations requiring robust mechanical connections.

Technical Specifications

• Ac Max I R Breaking Capacity I1: 200 kA
• Ac Or Dc: AC/DC
• Ampere Rating: 3000 A
• Body Insulating Material: GMG
• Connection Terminal Material: Silver-Plated Copper
• Connection Terminal Type: Blade
• Frequency Hz : 50/60 Hz
• Fuse Class: Class L
• Mounting Method: Bolted
• Product Length: 10.75 in
• Product Weight: 19.3 lb
• Rated Voltage Ac Ul: 600 V
• Rated Voltage Dc Ul: 300 V
• Rohs Compliant: Yes
• Speed Characteristic: Time Delay

Installation & Operation

1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
4. Configure any available load management or control features as supported by the provided specifications.
5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

• Industrial Manufacturing Facilities
• Commercial Power Distribution Systems
• Data Centers and Critical Infrastructure
• Heavy Equipment and Motor Protection
• Utility and Substation Applications
• Large Commercial Buildings
• Process Control and Automation Systems

Why Choose Mersen Quality?

Mersen delivers proven reliability in high-amperage circuit protection with RoHS compliant construction and professional-grade materials. The combination of GMG insulating material, silver-plated copper terminals, and Class L time-delay characteristics ensures dependable performance in the most demanding electrical environments where circuit protection integrity is critical.