Four way automatic transfer switch

A system comprising:

• an automatic transfer switch cassette, comprising:
• a stationary bar having a first end and a second end parallel to the first end;
• a first source bar and a second source bar disposed on a first side of the stationary bar;
• a third source bar and a fourth source bar disposed on a second side of the stationary bar that is opposed to the first side;
• a first movable bar electrically coupled and rotatably connected to the stationary bar at the first side and configured to contact the first source bar;
• and
• a second movable bar electrically coupled and rotatably connected to the stationary bar at the first side and configured to contact the second source bar;
• a third movable bar electrically coupled and rotatably connected to the stationary bar at the second side and configured to contact the third source bar;
• and
• a fourth movable bar electrically coupled and rotatably connected to the stationary bar at the second side and configured to contact the fourth source bar.

A system comprising:

• an automatic transfer switch cassette, comprising:
• a stationary bar;
• four source bars, each of the four source bars disposed on a same side of the stationary bar;
• and
• four movable bars, each of the four movable bars electrically coupled and rotatably connected to the stationary bar and configured to contact one of the four source bars.