The Siemens Sentron family of Molded Case Circuit Breakers has a wide range of internal and external accessories for you to use in your specific application.
Internal accessories are UL approved for field installation. Available internal accessories include Shunt trip, Undervoltage trip, Auxiliary Switches and Bell Alarms for most frames. Various combinations of these accessories are available to allow a multitude of configurations.
External accessories for the Sentron family include rotary handle operators, MaxFlex cable operators, handle blocking and handle padlocking devices, plug-in assemblies and motor operators.