Module power semiconductor with a detector for detecting the current of the main circuit through a power semiconductor element has

A power semiconductor module includes a detector (12) for detecting a current of a main circuit through a power semiconductor element. The detector comprises first and second circuit patterns (14, 15); a connecting wire (16) connected to the first and second circuit configurations, respectively to first and second connection points (C, D); and a pair of terminal patterns (18, 19) extending from the vicinity of the first and second connection points (C, D). The detector is adapted to detect a potential difference between the pair of terminal patterns (18, 19) which is generated by current flow in the main circuit through the first circuit configuration, connection wire and then the second configuration circuit to detect a potential difference across the connecting wire (16).