Withdrawable-type circuit breaker

摘要

Disclosed is a withdrawable-type circuit breaker, including a cradle, a main body disposed to be inserted into and withdrawn from the cradle by a transfer device, and an interlock device for restricting a withdrawal of the main body when the circuit breaker is in a connected state, wherein the interlock device includes a support part vertically disposed on a bottom surface of the main body, an interlock lever, having a sliding hole at one end thereof and a power transmission part at another end thereof, hinge-coupled at its medium portion to one end of the support part, and an interlock pin having one end inserted into and coupled to the sliding hole and another end up and downwardly movable and insertable to an interlock pin hole formed in a bottom surface of the cradle.

主权项

1. A withdrawable-type circuit breaker, comprising:
a cradle; a main body connecting a main circuit when inserted into the cradle by a transfer device or disconnecting a connected state of the main circuit when withdrawn from the cradle; and an interlock device restricting withdrawal of the main body when the circuit breaker is in a connected state, the interlock device including:
a support part vertically disposed on a bottom surface of the main body;an interlock lever having a sliding hole at one end and a power transmission part at another end, a middle portion of the interlock lever hinge-coupled to one end of the support part and two ends the interlock lever are rotatable; andan interlock pin movable up and down, the interlock pin having one end portion inserted into and slidably coupled to the sliding hole and another end portion insertably coupled to an interlock pin hole formed on a bottom surface of the cradle, wherein the support part includes: a pair of support plates each having one end connected to an intermediate portion of the interlock lever by a hinge shaft and another end coupled to a bottom surface of the main body, the pair of support plates spaced from each other; and a connection member installed between the pair of support plates, the connection member connecting the pair of the support plates to each other.