Pole component assembly for circuit breaker

A pole component assembly for a circuit breaker, comprising:

• a circuit breaker portion assembly having a main body provided with a fixing electrode and an operating electrode therein, an insulating rod provided in an lower portion of the main body and coupled to the operating electrode to move the operating electrode up and down, and a current carrying portion coupled to the insulating rod to be connected to an external terminal;
• and,
• an external insulating housing having a lower body provided with a lower terminal accommodating portion to accommodate a lower terminal electrically connected to the circuit breaker portion assembly and connected to an external power source, and a upper body provided with an upper terminal accommodating portion to accommodate an upper terminal electrically connected to the circuit breaker portion assembly and connected to the external power source, the upper body formed integrally with an upper portion of the lower body and having a shape in which a diameter of a portion thereof gradually decreases toward an upper portion thereof, and
• wherein the main body has an outer circumferential surface coated with an elastomer, and an upper end thereof is most thickly coated.