The control loop operation module is the core secondary circuit in the power system that ensures the reliable opening and closing of circuit breakers. This module's design covers key functions such as signal acquisition, logic control, protection interlocking, and status monitoring. The module possesses functions including trip, close, trip/close position indication, anti-trip, and control circuit disconnection, and supports DC operation circuits of DC220V, DC110V, DC48V, and DC24V, as well as AC operation circuits of AC220V.