Square D AL900MA Circuit Breaker Mechanical Lug Kit 3/0 Awg

Product Description

The SQUARE D AL900MA is a mechanical lug kit designed for use with Square D circuit breakers. This accessory provides a secure, code-compliant termination point for conductors where a mechanical lug connection is required instead of a standard bus connection. The kit accommodates 3/0 AWG conductors and is used by licensed electricians during panel installations, service upgrades, and breaker replacements where lugged terminations are specified. At 0.73 pounds, the AL900MA is a compact, field-installed accessory that integrates directly with compatible Square D breaker assemblies.

This mechanical lug kit is suited for residential and light commercial electrical distribution applications. It is typically installed in load centers and panelboards where incoming or outgoing conductors must land on a breaker lug rather than a bus bar. Electricians working on service entrance equipment and subpanel configurations will find this kit applicable to scenarios requiring direct conductor termination at the breaker level.

Key Features

• Accommodates 3/0 AWG conductors for heavy-duty termination applications
• Designed as a direct-fit accessory for Square D circuit breakers
• Compact form factor — 6.1 inches long, 4.1 inches wide, 2.9 inches tall
• Lightweight at 0.73 pounds for easy handling during panel work
• Sold as a single kit (package quantity of 1)

Compatibility

Designed for use with Square D circuit breakers as stated by the manufacturer. Verify breaker model compatibility against Square D documentation before installation.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Always de-energize the panel and verify zero voltage with a meter before installing or servicing any breaker accessory. Torque all lug fasteners to the value specified on the breaker or lug label. Do not exceed the rated conductor size for the lug.