Add-on current sensor for a power module

A power module, comprising:

• a frame including a set of sockets in which a set of sensor modules are to be inserted;
• and
• a set of busbars, each busbar of the set of busbars passing under at least a portion of a respective socket of the set of sockets in the frame,
• wherein a busbar of the set of busbars includes an opening positioned in the respective socket, the opening enabling insertion of a sensor module of the set of sensor modules in the respective socket.

A power module, comprising:

• a frame including a socket, the socket sized to permit a sensor module to be inserted in the socket;
• and
• a busbar extending under at least a portion of the socket, the busbar comprising an opening,
• wherein the opening is positioned in the socket, and
• wherein a size of the opening permits a portion of the sensor module to be inserted in and substantially fill the opening while the sensor module is in the socket.

A power module, comprising:

• a frame including a first socket, a second socket, and a third socket;
• a first busbar passing under at least a portion of the first socket,
• wherein the first busbar includes a first opening, the first busbar being positioned such that the first opening is in the first socket;
• a second busbar passing under at least a portion of the second socket,
• wherein the second busbar includes a second opening, the second busbar being positioned such that the second opening is in the second socket;
• and
• a third busbar passing under at least a portion of the third socket,
• wherein the third busbar includes a third opening, the third busbar being positioned such that the third opening is in the third socket.