A rotating dual break point contact includes a rotor support, a first shaft, a second shaft, a third shaft, a first connection rod, a second connection rod, a contact bridge and a contact spring. The contact bridge is provided in the rotor support, and the contact bridge rotates relative to the rotor support by means of the first shaft, the second shaft, the third shaft, the first connection rod and the second connection rod. The contact bridge rotates between an initial pressure position and a maximum repulsion position. A single contact spring is mounted on one side of the contact bridge and is located in the rotor support.

A transfer assembly is for a switching assembly of an electrical enclosure. The switching assembly includes an electrical switching apparatus having an operating handle structured to move from an OFF position to an ON position. The transfer assembly includes a driving handle; a first shaft member coupled to the driving handle; a second shaft member structured to be coupled to the operating handle; and a transmission assembly having a first component and a second component, the first component being coupled to the first shaft member, the second component being coupled to the second shaft member. The transfer assembly is structured to move from a FIRST position to a SECOND position. When the transfer assembly moves from the FIRST position to the SECOND position, the first component drives the second component, thereby causing the second shaft member to move the operating handle from the OFF position to the ON position.

Embodiments of the present disclosure relate to a switch device, comprising: a first three-position switch; a second three-position switch disposed below the first three-position switch; a circuit breaker disposed between the first three-position switch and the second three-position switch. A first interlock unit is disposed above the circuit breaker and connected to the circuit breaker and the first three-position switch, and configured to block a manual operation of the first three-position switch in a closed state of the circuit breaker, and configured to block a manual closing operation of the circuit breaker while the first three-position switch is manually operated in an open state of the circuit breaker. A second interlock unit is disposed below the circuit breaker and connected to the circuit breaker and the second three-position switch, and is configured to block a manual operation of the second three-position switch in the closed state of the circuit breaker, and configured to block a manual closing operation of the circuit breaker while the second three-position switch is manually operated in the open state of the circuit breaker.

A circuit breaker having a movable contact arm for opening and closing the circuit which is controlled separately by a circuit breaker mechanism for circuit protection and by a switch lever mechanism which does not require actuation of the circuit breaker mechanism to function. The switch lever may be activated by a solenoid or other suitable means, and various interlocking mechanical states exist among the elements that provide added safety features.

A circuit breaker arraignment includes at least two trip mechanisms. The first trip mechanism acts to immediately trip to open contacts of the circuit breaker upon reaching a first threshold current level, and the second trip mechanism acts to trip to open the contacts once both a second current threshold is reached and a time delay has elapsed. The contacts are moved by a linkage assembly that is held under mechanical advantage such that when acted on by one of the two trip mechanisms, the mechanical advantage is released to rapidly open the contacts.

A changeable mechanism includes a contact support, a connecting rod, a connecting shaft, a cantilever, and a changeable component. The contact support has a moving contact therein, and rotates about a shaft. The connecting rod bottom end is connected to the contact support, the connecting rod top end is connected to a cantilever through a connecting shaft. The changeable component is connected to and drives the cantilever through a main shaft, and drives the contact support to rotate through the connecting shaft and connecting rod. Rotation of the contact support makes the moving contact and static contact separate or in contact to realize opening or closing a circuit breaker. The changeable mechanism may switch between a manual operation mechanism and an electrical operation mechanism of a MCB. The changeable component does not dispose the electrical operation mechanism outside the MCB, so that height and volume of the MCB is reduced.

The power distribution system includes a plug-in frame, a board located in the plug-in frame, and at least one circuit breaker. The board includes a plurality of slot positions, a position signal acquisition apparatus is disposed on the board, and the position signal acquisition apparatus is configured to acquire an address of any slot position on the board. A first end of each circuit breaker extends into the plug-in frame and is plugged to a slot position on the board, and a second end of the circuit breaker is located at an open end of the plug-in frame. The open end of the plug-in frame is provided with an address code, the address code corresponds to an address of a slot position on the board, and each circuit breaker corresponds to at least one address code.

A visible disconnect switch (VDS) interlock assembly is provided. The VDS interlock assembly is movable between a CBA, first lockout position, wherein a CBA second contact assembly cannot move when a VDS second contact assembly is in a first position, and a VDS, second lockout position, wherein a VDS second contact assembly cannot move when the CBA second contact assembly is in a second position. Further, the VDS interlock assembly is placed in an open position in between where the CBA, first lockout position and the VDS, second lockout position; from the open position the VDS interlock assembly may be moved into one of the CBA, first lockout position or the VDS, second lockout position.

The present invention relates to a multi-pole molded case circuit breaker, more particularly, to a multi-pole molded case circuit breaker having a safety device (with an isolation function) which prevents a manipulation handle from being moved to an off-position when a fusion occurs on a contact portion.

A device with “plug-in” receptacle that mounts in a breaker panel. The plug receptacle receives a power cord inserted by the operator. The device includes a multifunction circuit interrupt that offers overload, thermal, and ground fault (GFCI) protection for the operator in hazardous environments such as garages, shops and spider boxes at construction sites. The devices may include a networkable node or port and onboard comm circuitry that is compatible with a wired or wireless TOT network. In another embodiment, a dummy breaker body includes a plug receptacle with a GFCI interrupt circuit but no direct electrical connection to the hot bus bar, and is wired in series with a conventional circuit breaker module in a breaker panel. Using solid state electronics, the GFCI panel-mounted devices may be configured to perform an automatic fault test prior to each use. Network systems using smart breaker devices are described.