Spectra K to Tmax XT Circuit Breaker Retrofit Guide

This document provides instructions for replacing a legacy Spectra K molded case circuit breaker (AMC3KM module) with a Tmax XT molded case circuit breaker (SRFP3XT7 module) in Spectra Series Power Panelboards. It includes critical safety warnings, required tools, and step-by-step procedures for removing the old plug-in module and preparing for the retrofit, while emphasizing that ratings of the original panelboard must not be altered.