| 摘要 |
PROBLEM TO BE SOLVED: To provide a multipolar circuit breaker causing no problem such as instability of tripping operation, even when deviations are produced in the deformation speeds of bimetals in tripping mechanisms adjacent to each other.SOLUTION: In this multipolar circuit breaker formed by adjacently disposing a plurality of circuit breakers 1a, 1b including bimetals 8 and trigger levers 3 in respective cases, a trip bar 2 to transmit the movement of each bimetal 8 to each trigger lever 3 is disposed while passing through each of the circuit breakers 1a, 1b, and the trip lever 2 has a bimetal contact face 2a pressed by the tip of the bimetal 8 when it bends, a trigger lever lock releasing part 2b to release the locked state of each trigger lever by kicking each trigger lever, and a trigger lever catching part 2c caught when spring force is given to the trigger lever released from the locked state by spring force to operate it. |
