Industrial circuit breaker

A method, comprising:

• measuring at least one phase-to-phase voltage level between two or more poles, wherein the two or more poles are electrically connected between a power supply and a contactor, wherein each of the two or more poles comprises a switch configured to open to break and close to make an electrical connection between the power supply and the contactor;
• detecting a presence of current through the two or more poles;
• in response to determining that the at least one phase-to-phase voltage level is within a threshold range, closing corresponding switches of the two or more poles;
• in response to detecting current flowing through at least one of the two or more poles, maintaining the corresponding switches in a closed position;
• closing any remaining switches of the switches associated with the two or more poles after a period of time;
• receiving a first phase-to-phase voltage level between a first one of the two or more poles and a second one of the two or more poles;
• receiving a second phase-to-phase voltage level between the second one of the two or more poles and a third one of the two or more poles;
• and
• determining a third phase-to-phase voltage level between the first one of the two or more poles and the third one of the two or more poles based on the first phase-to-phase voltage level and the second phase-to-phase voltage level.

A circuit breaker, comprising:

• two or more poles electrically connected between a power supply and a contactor, wherein each of the two or more poles comprises a switch configured to open to break and close to make an electrical connection between the power supply and the contactor;
• one or more voltage measuring devices configured to measure at least one phase-to-phase voltage level between two of the two or more poles;
• one or more current detecting devices configured to detect current going through each of the two or more poles;
• and
• a control circuitry configured to:
• monitor the at least one phase-to-phase voltage level;
• in response to determining the at least one phase-to-phase voltage level is within a threshold range, close corresponding switches of the two of the two or more poles;
• in response to detecting current flowing through at least one of the two or more poles, maintain the corresponding switches in a closed position;
• and
• close all additional switches associated with the two or more poles after a period of time,
• wherein the control circuitry is further configured to:
• receive a first phase-to-phase voltage level between a first one of the two or more poles and a second one of the two or more poles;
• receive a second phase-to-phase voltage level between the second one of the two or more poles and a third one of the two or more poles;
• and
• determine a third phase-to-phase voltage level between the first one of the two or more poles and the third one of the two or more poles based on the first phase-to-phase voltage level and the second phase-to-phase voltage level.