Residual load circuit breaker

A rotary switch body for a residual load disconnector switch comprising a feed line terminal, a discharge line terminal, and a switching device, the switching device comprising a rotary switch body comprising a contact blade rotatable about an axis arranged between the feed line terminal and the discharge line terminal, the contact blade comprising contact surfaces projecting radially on a contact blade end side, wherein the contact surfaces are in touching contact with both the feed line terminal and the discharge line terminal in a closed rotary position of the rotary switch body, the contact surfaces are located at a spaced location from the feed line terminal and the discharge line terminal in an open rotary position of the rotary switch body, the residual load disconnector switch performs switching motions of the rotary switch body that are rotationally limited in one rotational direction;

• and the switching motions are actuated unidirectionally and cyclically to move the rotary switch body from the closed rotary position into an open rotary position and again into the closed rotary position, the rotary switch body comprising a multipart insulating housing comprising:
• a first half shell;
• a second half shell;
• and
• an inner sleeve, wherein the contact blade has a central recess, through which the housing extends.

A residual load disconnector switch operating method comprising:

• providing a residual load disconnector switch for breaking an electrical connection to a propulsion current supply conductor for a transport device, wherein the residual load disconnector switch comprising a feed line terminal and a discharge line terminal;
• providing a rotatory jump drive configured to drive the rotary switch body to an abrupt switching rotation;
• providing the residual load disconnector switch with a load detector monitoring a current flow and/or a voltage between the feed line terminal and a discharge line terminal of the residual load disconnector switch;
• receiving a request for breaking the electrical connection at the residual load disconnector switch;
• checking a load that is present at the residual load disconnector switch between the feed line terminal and the discharge line terminal;
• and
• triggering the abrupt rotary motion of the rotary switch body upon determining that the load is lower than a permissible residual load, wherein:
• the residual load disconnector switch further comprises a switching device, the switching device comprising a rotary switch body comprising a contact blade rotatable about an axis arranged between the feed line terminal and the discharge line terminal, the contact blade comprising contact surfaces projecting radially on a contact blade end side, wherein the contact surfaces are in touching contact with both the feed line terminal and the discharge line terminal in a closed rotary position of the rotary switch body, the contact surfaces are located at a spaced location from the feed line terminal and the discharge line terminal in an open rotary position of the rotary switch body, the residual load disconnector switch performs switching motions of the rotary switch body that are rotationally limited in one rotational direction;
• and the switching motions are actuated unidirectionally and cyclically to move the rotary switch body from the closed rotary position into an open rotary position and again into the closed rotary position;
• and/or
• the residual load disconnector switch is provided in combination with a rotary switch body comprising a multipart insulating housing comprising a first half shell, a second half shell;
• and an inner sleeve, wherein the contact blade has a central recess, through which the housing extends;
• and/or
• a module switching block is provided for the residual load disconnector switch, the module switching block comprising an insulator chamber with the feed line terminal, and with the rotary switch body and with the discharge line terminal.

A residual load disconnector switch for breaking an electrical connection to a propulsion current supply conductor for a transport device, the residual load disconnector switch comprising:

• a feed line terminal;
• a discharge line terminal;
• and
• a switching device, the switching device comprising a rotary switch body comprising a contact blade rotatable about an axis arranged between the feed line terminal and the discharge line terminal, the contact blade comprising contact surfaces projecting radially on a contact blade end side, wherein:
• the contact surfaces are in touching contact with both the feed line terminal and the discharge line terminal in a closed rotary position of the rotary switch body;
• the contact surfaces are located at a spaced location from the feed line terminal and the discharge line terminal in an open rotary position of the rotary switch body;
• the residual load disconnector switch performs switching motions of the rotary switch body that are rotationally limited in one rotational direction;
• and
• the switching motions are actuated unidirectionally and cyclically to move the rotary switch body from the closed rotary position into the open rotary position and again into the closed rotary position;
• the rotary switch body further comprising an insulating housing comprising a first half shell, a second half shell and an inner sleeve, and the contact blade has a central recess, through which the housing extends, the housing comprising a shaft mount connected to a shaft for rotation in unison.

A residual load disconnector switch for breaking an electrical connection to a propulsion current supply conductor for a transport device, the residual load disconnector switch comprising:

• a feed line terminal;
• a discharge line terminal;
• and
• a switching device, the switching device comprising a rotary switch body comprising a contact blade rotatable about an axis arranged between the feed line terminal and the discharge line terminal, the contact blade comprising contact surfaces projecting radially on a contact blade end side, wherein:
• the contact surfaces are in touching contact with both the feed line terminal and the discharge line terminal in a closed rotary position of the rotary switch body;
• the contact surfaces are located at a spaced location from the feed line terminal and the discharge line terminal in an open rotary position of the rotary switch body;
• the residual load disconnector switch performs switching motions of the rotary switch body that are rotationally limited in one rotational direction;
• the switching motions are actuated unidirectionally and cyclically to move the rotary switch body from the closed rotary position into an open rotary position and again into the closed rotary position;
• and
• a feed-out collector wherein the residual load disconnector switch is configured to be fastened to an external support structure via the feed-out collector.

A residual load disconnector switch for breaking an electrical connection to a propulsion current supply conductor for a transport device, the residual load disconnector switch comprising:

• a feed line terminal;
• a discharge line terminal;
• and
• a switching device, the switching device comprising a rotary switch body comprising a contact blade rotatable about an axis arranged between the feed line terminal and the discharge line terminal, the contact blade comprising contact surfaces projecting radially on a contact blade end side, wherein:
• the contact surfaces are in touching contact with both the feed line terminal and the discharge line terminal in a closed rotary position of the rotary switch body;
• the contact surfaces are located at a spaced location from the feed line terminal and the discharge line terminal in an open rotary position of the rotary switch body;
• the residual load disconnector switch performs switching motions of the rotary switch body that are rotationally limited in one rotational direction;
• the switching motions are actuated unidirectionally and cyclically to move the rotary switch body from the closed rotary position into an open rotary position and again into the closed rotary position;
• and
• an access limitation device, which makes possible a manual access to the residual load disconnector switch only when a detected electrical load between the feed line terminal and the discharge line terminal falls below a permissibility limit value.