Bus Bar Module and Wire Harness

A bus bar module comprising:

• a flat cable having a cable part and an insulator resin part;
• and
• a bus bar crimped and fixed to the insulator resin part,
• wherein the cable part includes a plurality of conductor wires arranged in parallel at predetermined intervals on a plane and a covering part integrally covering the plurality of conductor wires with an insulating resin,
• wherein the insulator resin part is disposed in parallel to the cable part on the plane and made of a same resin as the insulating resin of the covering part, and
• wherein when a length in a direction intersecting at a right angle to the plane is defined as a thickness, the thickness of the insulator resin part is equal to or more than 0.5 mm, and a value obtained by dividing the thickness of the insulator resin part by a thickness of the bus bar is equal to or more than 0.5 and equal to or less than 2.38.