An interlock apparatus according to embodiments is configured to block an operation of a third circuit breaker while a first circuit breaker and a second circuit breaker operate and include a mover and a rotator. The mover include a first connector connected to the first circuit breaker, a second connector connected to the second circuit breaker, and a central part disposed between the first connector and the second connector and is rectilinearly moved along one direction in response to operations of the first circuit breaker and the second circuit breaker. The rotator include a first engagement part engaged with to the third circuit breaker and a second engagement part engaged with the central part and be rotated around a shaft passing through the first engagement part.

A rotatable switching member includes a support bracket having a first arm, a second arm, and a middle portion, and a switch flange. The rotatable switching member further includes a switch bracket connected to the middle portion of the support bracket having an attachment portion and an engagement portion. A handle is fixed to the first arm of the support bracket to rotate the rotatable switching member.

An interlocking structure of a power conversion system is provided. A first power circuit group is connected to a first power source and includes a first and a fourth switch. A second power circuit group is connected to a second power source and includes a second and a fifth switch. A limiting mechanism includes a first limiting portion, a second limiting portion, a fourth limiting portion, a fifth limiting portion, a first accommodating portion, and a second accommodating portion. The first switch is switched off to disconnect the first power source. Then, a limiting structure is moved to connect the second power source. Accordingly, the first power source is disconnected, and the second power source is connected, allowing repair or maintenance of the first power source to be performed without interrupting the supply of power from the power conversion system.

An interlocking structure of a power conversion system is provided. A first power circuit group is connected to a first power source and includes a first and a fourth switch. A second power circuit group is connected to a second power source and includes a second and a fifth switch. A limiting mechanism includes a first limiting portion, a second limiting portion, a fourth limiting portion, a fifth limiting portion, a first accommodating portion, and a second accommodating portion. The first switch is switched off to disconnect the first power source. Then, a limiting structure is moved to connect the second power source. Accordingly, the first power source is disconnected, and the second power source is connected, allowing repair or maintenance of the first power source to be performed without interrupting the supply of power from the power conversion system.

An interlock apparatus according to embodiments is configured to block an operation of a third circuit breaker while a first circuit breaker and a second circuit breaker operate and include a mover and a rotator. The mover include a first connector connected to the first circuit breaker, a second connector connected to the second circuit breaker, and a central part disposed between the first connector and the second connector and is rectilinearly moved along one direction in response to operations of the first circuit breaker and the second circuit breaker. The rotator include a first engagement part engaged with to the third circuit breaker and a second engagement part engaged with the central part and be rotated around a shaft passing through the first engagement part.

A modular transfer switch (22) and actuator (20) wherein multiple transfer switches are connectable in linear arrangement with the actuator such that the actuator controls the position of all of the transfer switches. Each of the transfer switches (22) includes a contact assembly (48) that converts over-rotation of the drive linkage (26) in the transfer switch to added pressure between the load contacts and the power contacts in the contact assembly. The actuator has an embodiment wherein a joint (400) that connects counter-rotating arms (396,398) is linked to the armature of a linear motor (507) and spring tension from springs (423, 424) is additive to the closing force applied to the transfer switches (22).

A rotatable switching member comprises a support bracket having a first arm, a second arm, and a middle portion, and a switch flange. The rotatable switching member further comprises a switch bracket connected to the middle portion of the support bracket having an attachment portion and an engagement portion. A handle is fixed to the first arm of the support bracket to rotate the rotatable switching member.

A modular transfer switch (22) and actuator (20) wherein multiple transfer switches are connectable in linear arrangement with the actuator such that the actuator controls the position of all of the transfer switches. Each of the transfer switches (22) includes a contact assembly (48) that converts over-rotation of the drive linkage (26) in the transfer switch to added pressure between the load contacts and the power contacts in the contact assembly. The actuator has an embodiment wherein a joint (400) that connects counter-rotating arms (396,398) is linked to the armature of a linear motor (507) and spring tension from springs (423, 424) is additive to the closing force applied to the transfer switches (22).

A fastener is provided for ganging or joining two or more switch handles to one another. The fastener includes a head at one end and an elongated shank extending from the head. The shank includes a threaded portion adjacent the head that threadingly engages one of the switch handles. The shank extends longitudinally from the threaded portion through the threadingly engaged switch handle and through one or more additional switch handles to gang the switch handles to one another.

A modular transfer switch (22) and actuator (20) wherein multiple transfer switches are connectable in linear arrangement with the actuator such that the actuator controls the position of all of the transfer switches. Each of the transfer switches (22) includes a contact assembly (48) that converts over-rotation of the drive linkage (26) in the transfer switch to added pressure between the load contacts and the power contacts in the contact assembly.