Lockout device for switchgear

摘要

A safety lockout device (2) for switchgear (4) that includes a movable member (16) adapted to be moved from a first position to a second position; a switch (10) adapted to electrically isolate a motor in the switchgear (4); and a blocking arm (12) coupled to a shaft (14) of the motor. In the first position, the movable member (16) engages the switch (10) to close the electrical motor circuit and the blocking arm (12) is free to rotate with the motor shaft (14). In the second position, the movable member (16) moves away from the switch (10) so that the switch is in an open circuit state disconnecting power to the motor and a portion of the movable member (16) is moved to a position whereby the blocking arm (12) engages the movable member (12) to prevent rotation of the motor shaft (14) and a change of state of the switchgear.