Merit Brass A4BY1500 Class L Fuse 600V

Product Description

The MERIT BRASS A4BY1500 is a Class L fuse rated at 600 volts, designed for high-ampacity overcurrent protection in industrial and commercial electrical systems. Class L fuses are bolted-connection devices used where high fault-current interrupting capacity is required. Licensed electricians install these fuses in switchboards, panelboards, motor control centers, and service entrance equipment. The Class L designation indicates compliance with UL standards for fuses rated above 600 amperes, making this part a recognized format across heavy electrical distribution applications.

This fuse is suited for commercial and industrial installations where branch-circuit or feeder protection demands high interrupting ratings. It is typically found in facilities with large motor loads, transformer feeds, or main service sections where bolted-fault current levels are elevated. Installation is performed by qualified electricians working under NEC Article 240 requirements for overcurrent protection.

Key Features

• Class L form factor with bolted-connection terminals for high-ampacity circuits
• 600-volt rating suitable for standard North American distribution voltages
• High interrupting capacity appropriate for industrial and commercial service entrance use
• UL-recognized Class L designation ensures dimensional and performance interchangeability

Compatibility

Designed as an OEM-style replacement Class L fuse for use in 600-volt industrial and commercial electrical distribution equipment accepting Class L bolted-connection fuses.

Installation Notes

Installation must be performed by a licensed electrician in accordance with NEC Article 240 and all applicable local codes. De-energize and verify absence of voltage on all conductors before handling fuses or opening the enclosure. Class L fuses require bolted-connection fuse holders rated for the ampere and voltage class. Do not substitute a different fuse class or ampere rating without verifying system coordination with the original design.

Technical Specifications

• Voltage Rating: 600 volts
• Fuse Class: Class L
• UPC: 78200193919

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A4BY1500