The HXN3 (Chinese: 和谐内3) (EMD classification JT56ACe) is a 6000 horsepower (4.5 MW) diesel-electric locomotive designed by Electro-Motive Diesel in the United States for export to China.

All JT56ACe locomotives use AC traction motor technology and use the EMD H-Engine as their prime mover.

The locomotives are capable of meeting the EPA's Tier 2 emissions regulations.

[1] In September 2005, the People's Republic of China announced an order for 300 JT56ACe locomotives.

Number 7001 - 7004 are delivered to Shenhua Mining Group.