Square D AL150HD Circuit Breaker Mechanical Lug Kit

Product Description

The SQUARE D AL150HD is a mechanical lug kit designed for use with compatible Square D circuit breakers. It provides a secure, code-compliant termination point for conductors ranging from 14 AWG to 3/0 AWG, allowing field installation of mechanical lug connections in place of standard terminal configurations. Licensed electricians install this accessory during panel work, service upgrades, or breaker replacements where lug-style terminations are required. The kit ships as a single-piece package and measures 4.5 inches in length, 3 inches in width, and 1 inch in height, making it straightforward to stage and install in tight panelboard spaces.

This mechanical lug kit is suited for residential and light commercial electrical applications where Square D breakers require lug-type conductor terminations. It supports wire sizes from 14 AWG through 3/0 AWG, accommodating a broad range of conductor gauges used in branch circuit and feeder applications. Electricians working on load center upgrades, subpanel installations, or breaker accessory configurations will find this kit appropriate for standard panelboard environments.

Key Features

• Accepts conductors from 14 AWG to 3/0 AWG for flexible wiring options
• Designed as a factory-style mechanical lug accessory for compatible Square D circuit breakers
• Compact form factor: 4.5 inches long, 3 inches wide, 1 inch tall
• Single-kit packaging for straightforward procurement and staging
• Supports lug-style terminations as an alternative to standard screw terminals

Compatibility

Designed as an OEM-style mechanical lug kit accessory for compatible Square D circuit breakers requiring field-installed lug terminations.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the panel before installing or removing any breaker accessories. Verify conductor size falls within the 14 AWG to 3/0 AWG range before terminating. Do not exceed the lug kit torque specifications listed on the breaker or accessory label.