Trip link structure for circuit breaker

A trip link structure for a circuit breaker unit having an operational mechanism for operating driving levers corresponding to each phase of electric power, comprising:

• a plurality of circuit breakers arranged in a triangle shape and each having a fixed contact point and a movable contact point formed therein as corresponding to one of three phases and each having an operational rod connected with a corresponding movable contact point;
• a main body engaging plate engaged to a front surface of each of said plurality of circuit breakers;
• support brackets each engaged to a front surface of said main body engaging plate as corresponding to a respective one of said plurality of circuit breakers;
• operational link plates each having a first connection portion hinged to respective ones of the operational rods and each having a second connection portion supported by first connection portions of respective ones of said support brackets;
• a first connection link having an upper end hinged to a third connection portion of a respective one of said operational link plates connected with a respective one of said plurality of circuit breakers within an upper side portion of the circuit breaker unit for thereby being downwardly extended;
• second and third connection links each having a lower end hinged to third connection portions of respective ones of said operational link plates connected with respective ones of said circuit breakers within a lower side portion of the circuit breaker unit for thereby being upwardly extended;
• a first connection lever having a first connection portion connected with a lower end of said first connection link, a second connection portion supported by a second connection portion of a respective one of said support brackets, and a third connection portion hinged to a first driving lever;
• and
• second and third connection levers each having first connection portions respectively connected with lower ends of said second and third connection links, second connection portions supported by second connection portions of respective ones of said support brackets, and third connection portions hinged to respective second and third driving levers.