GMBSHT311NC is a shunt release accessory designed for Carlo Gavazzi GMB63 miniature circuit breakers, providing remote release capability through application of 12-24V DC control voltage. This device enables automatic tripping of the MCB when a control signal is applied, allowing for centralized circuit management and emergency shutdown functionality. The shunt release mounts on the left side of the circuit breaker and is rated for 12-24V DC operation. It is CE-approved and designed to integrate seamlessly with the GMB63 family of UL489-compliant circuit breakers. Common applications include industrial control systems, emergency power cutoff circuits, and automated load management in electrical distribution panels.