Merit Brass A4BQ1800 Class L Fuse 600V

Product Description

The MERIT BRASS A4BQ1800 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 used where high fault-current interrupting capacity is required, providing reliable protection for conductors, equipment, and distribution panels. This fuse is a bolt-in style device intended for installation by licensed electricians working on heavy-duty service entrance equipment, motor control centers, and large feeder circuits operating at up to 600 volts.

Class L fuses are a standard solution in commercial and industrial power distribution where high available fault current demands robust overcurrent protection. Typical applications include main service panels, switchgear, motor control centers, and industrial feeder protection. This fuse is suited for facilities where NEC compliance requires current-limiting overcurrent devices rated for 600-volt systems.

Key Features

• 600-volt rating suitable for industrial and commercial power distribution
• Class L construction provides high interrupting capacity for high fault-current environments
• Bolt-in mounting style compatible with standard Class L fuse holders and switches
• Current-limiting design helps protect downstream equipment during fault events

Compatibility

Designed as an OEM-style replacement for Class L fuse applications in 600-volt industrial and commercial electrical distribution equipment.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements for overcurrent protection devices. De-energize and lock out the circuit before removing or installing this fuse. Verify that the fuse holder and disconnect switch are rated for Class L fuses and for the full voltage and current of the circuit. Do not substitute a fuse of a different class or amperage rating.

Technical Specifications

• Voltage Rating: 600 volts
• Fuse Class: Class L
• UPC: 78200193012

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A4BQ1800