ATSO21 and ATSO22 Automatic Transfer Switch Circuit Diagrams

This document provides the circuit diagrams and wiring configurations for the ATSO21 and ATSO22 automatic transfer switch devices, which manage the switching between normal, emergency, and auxiliary safety power supplies for two XT series circuit breakers. It includes detailed terminal connection tables (e.g., XT1-XT3, XT2-XT4) with NO/YES states, page references for measure inputs, and schematics for breakers with or without DC/AC safety auxiliary voltage supply.