Medium voltage circuit breaker arrangement operated by special transmission means

摘要

Circuit breaker arrangement comprising at least one pole part (3a - 3c) for switching an electrical medium to high voltage circuit by a respective pair of corresponding inner electrical contacts (4a, 4b), wherein a pushrod (5a - 5c) of a respective movable electrical contact (4a) is operated by a common actuator unit (6), which is mechanically connected to each pushrod (5a - 5c) via transmission means for transferring the switching force from the actuator unit (6) to each pushrod (5a - 5c), wherein the transmission means comprise a crankshaft (7) having at least one crank (8a - 8c) which is pivotally attached to one end of a connection rod (9a - 9c), wherein further the opposite end of the connection rod (9a - 9c) is pivotally attached to the end of the pushrod (5a - 5c) of the corresponding pole part (3a - 3c).