Rotary electrical machine

A rotary electrical machine comprising:

• a cylindrical stator that generates a magnetic field;
• a rotor that generates torque through the magnetic field;
• and
• a housing that accommodates the stator,
• wherein the housing includes a housing body covering an outer circumferential part of the stator, and a housing lid part attached to one end side of the housing body,
• the stator includes a stator core having a plurality of teeth, and a stator coil mounted on the stator core,
• the stator coil has a plurality of windings wound onto the plurality of teeth, and crossover wires that are each provided to connect at least two of the plurality of windings,
• the crossover wires are provided in the housing lid part, and
• the rotary electrical machine comprises an insertion mechanism that electrically connects end parts of the windings and an end part of each of the crossover wires through insertion contact.