Circuit interrupter with energy management functions

Self-contained circuit interrupter apparatus, comprising:

• interrupter means for conducting current flow in an associated circuit and for operating to interrupt the current flow therethrough on command;
• sensing means for sensing current flow through said interrupter means and for supplying operating power to said apparatus;
• trip unit means connected to said interrupter means and said sensing means for operating said interrupter means when current flow therethrough exceeds predetermined limits;
• voltage means for obtaining the value of line voltage on the associated circuit;
• power factor means for obtaining the value of power factor on the associated circuit;
• arithmetic means connected to said current sensing means, said voltage means, and said power factor means for calculating real power flow through the associated circuit;
• a housing enclosing said apparatus;
• and
• display means visible from the exterior of said housing and connected to said arithmetic means for displaying the numeric value of said product as real power being delivered by the associated circuit.