Merit Brass A4BQ4000 Class L Fuse 600V

Product Description

The MERIT BRASS A4BQ4000 is a Class L fuse rated at 600 volts, designed for high-capacity overcurrent protection in industrial and commercial electrical systems. Class L fuses are built for high-interrupting-capacity applications where branch circuit or feeder protection is required at voltage levels up to 600 volts. This fuse is installed by licensed electricians as part of panelboard, switchboard, or industrial control equipment service work. Its current-limiting design helps protect downstream components from damaging fault currents.

The A4BQ4000 is suited for use in industrial facilities, commercial buildings, and heavy-duty electrical distribution systems requiring Class L-rated overcurrent protection. Class L fuses are commonly specified in applications where high fault-current interruption ratings are needed and where the fuse must meet UL listing requirements for Class L devices. Installation typically occurs in fused disconnect switches, industrial control panels, or switchgear rated for 600-volt service.

Key Features

• 600-volt rating suitable for industrial and commercial distribution circuits
• Class L designation indicates high interrupting capacity and current-limiting performance
• Designed for use in fused disconnects, switchboards, and industrial control panels
• Overcurrent protection helps prevent damage to downstream electrical equipment

Compatibility

Designed as an OEM-style replacement or direct application fuse for Class L fusible equipment rated at 600 volts. Consult equipment nameplate and fuse block specifications to confirm correct ampere rating and physical size before installation.

Installation Notes

Installation of Class L fuses must be performed by a qualified, licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. Always de-energize and lock out the circuit before removing or installing fuses. Verify that the fuse holder or disconnect is rated for Class L devices at the appropriate voltage and ampere rating. Do not substitute a fuse of a different class or ampere rating as a replacement.

Technical Specifications

• Voltage Rating: 600 volts
• Fuse Class: Class L
• UPC: 78200193017

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A4BQ4000