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.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.