Plug-in ground fault monitor for a circuit breaker

A plug-in ground fault monitor module for a trip unit having a processor which selectively accesses program code for transferring data between the processor and a plurality of separate types of optional feature modules, the plug-in ground fault monitor module comprising:

• means for mechanically seating the plug-in ground fault monitor module in the trip unit;
• a memory device for storing plug-in ground fault monitor module configuration data;
• a digital display which displays alphanumeric data in response to data transferred from the processor to the plug-in ground fault monitor module;
• a connector coupled to the memory device for providing a data transfer path between the trip unit and the plug-in ground fault monitor module, wherein the data transfer path provides the trip unit with access to the configuration data and the digital display and wherein the processor reads the configuration data, so as to identify that the plug-in ground fault monitor module is coupled to the connector, accesses a respective portion of the program code based upon the configuration data read from the plug-in ground fault monitor module and transfers data between the processor and the plug-in ground fault monitor module.

A plug-in ground fault monitor module for a trip unit having a processor which selectively accesses program code for transferring data between the processor and a plurality of separate types of optional feature modules, the ground fault monitor comprising:

• means for mechanically seating the plug-in ground fault monitor module in the trip unit;
• at least one jumper memory device for storing configuration data;
• a digital display which displays alphanumeric data in response to data transferred from the processor to the plug-in ground fault monitor module;
• a connector coupled to the memory device for providing a data transfer path between the trip unit and the plug-in ground fault monitor module, wherein the data transfer path provides the trip unit with access to the configuration data and the digital display and wherein the processor reads the configuration data, so as to identify that the plug-in ground fault module is coupled to the connector, accesses a respective position of the program code based upon the configuration data read from the plug-in ground fault monitor module and transfers data between the processor and the plug-in ground fault monitor module;
• a user operable switch coupled to the connector to provide control data to the processor;
• and,
• a visual indicator which indicates levels at which the trip unit will set limit values based upon the control data generated by a position of the user operable switch.

A circuit breaker trip unit comprising:

• a processor which selectively accesses program code for operating a plurality of types of optional feature remote actuation modules;
• and
• an optional feature remote actuation module for actuating remote circuit protection devices, which is insertable into the trip unit and coupled to the processor, the optional feature remote actuation module including therein a memory which stores optional feature remote actuation configuration data;
• wherein the processor accesses the module memory, reads the configuration data, and accesses a respective portion of the program code for operation of the optional feature remote actuation module, based on the configuration data.

A circuit breaker trip unit comprising:

• a connector for receipt of different types of interchangeable optional feature remote actuation modules;
• a processor, coupled to the connector, for reading identification configuration data from an optional feature remote actuation module, for actuating remote circuit protection devices, that is also coupled to the connector;
• and
• memory coupled to the processor having program codes stored therein for operating a plurality of types of optional feature remote actuation modules;
• wherein the processor reads the identification configuration data, and accesses a respective portion of said program codes for operation of the optional feature remote actuation module that is coupled to the connector, based on the configuration data read therefrom.