Thermal trip assembly and circuit interrutper including the same

A circuit interrupter comprising:

• a first terminal;
• a second terminal;
• a plurality of busbars electrically connecting the first and second terminals;
• separable contacts moveable between a closed position and an open position, the first and second terminals being electrically disconnected from each other when the separable contacts are in the open position;
• an operating mechanism structured to open said separable contacts;
• an actuator structured to cooperate with said operating mechanism to trip open said separable contacts;
• a current sensor structured to sense a current flowing between the first and second terminals;
• a current transformer structured to harvest power from the current flowing between the first and second terminals;
• and
• an electronic trip unit including:
• an other trip function circuit structured to output a first trip signal to control the actuator to cooperate with the operating mechanism to trip open the separable contacts based on the current sensed by the current sensor;
• and
• a thermal trip assembly comprising:
• a fastener;
• an insulating sleeve;
• a temperature sensor structured to sense a temperature of one of the plurality of busbars;
• and
• a thermal trip circuit structured to output a second trip signal based on the sensed temperature,
• wherein a portion of said insulating sleeve is disposed between the temperature sensor and said one of the plurality of busbars;
• and
• wherein the fastener couples the insulating sleeve and the temperature sensor to said one of the plurality of busbars with the insulating sleeve being in direct contact with a portion of the one of the plurality of busbars.