Mersen A4BQ1400 Class L Fuse 1400A 600V

Product Description

The MERSEN A4BQ1400 is a Class L current-limiting fuse rated at 1400 amps and 600 volts AC. Class L fuses are designed for high-ampacity overcurrent protection in demanding electrical distribution systems. This fuse provides fast-acting, current-limiting performance that helps protect downstream conductors, switchgear, and electrical equipment from the damaging effects of fault currents. Electricians and electrical contractors install Class L fuses in industrial panels, motor control centers, and heavy commercial distribution equipment where high interrupt ratings and UL Class L compliance are required.

Class L fuses in the 1400-amp range are typically found in large commercial and industrial applications. Common installation points include main distribution panels, feeder circuits, and service entrance equipment operating at 600 volts AC or below. This fuse is appropriate for facilities with high-load electrical infrastructure such as manufacturing plants, data centers, and large commercial buildings where fault current levels demand a current-limiting device.

Key Features

• 1400-amp continuous current rating for high-capacity feeder and service protection
• 600-volt AC maximum voltage rating suitable for standard industrial distribution systems
• Current-limiting Class L design reduces let-through energy during fault conditions
• UL Class L classification ensures compatibility with Class L fuse holders and switches

Compatibility

Designed as an OEM-style replacement for Class L fusible switches and fuse holders rated for 1400-amp, 600-volt Class L fuses.

Installation Notes

Class L fuses must be installed by a licensed electrician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the electrical panel or disconnect before removing or replacing any fuse. Verify that the fuse holder is rated for Class L devices at the specified amperage and voltage before installation. Do not substitute a fuse of a different class, amperage, or voltage rating.

Technical Specifications

• Amperage: 1400 amps
• Voltage: 600 volts AC
• Fuse Class: Class L
• UPC: 78200193009

Standard Information

• Brand: MERSEN
• Manufacturer Part Number: A4BQ1400