The HXN3 () (EMD classification JT56ACe) is a 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.
In September 2005, the People's Republic of China announced an order for 300 JT56ACe locomotives. The locomotives were jointly manufactured by EMD and China's own Dalian Locomotive Works.Electro-Motive Diesel: JT56ACe for China Ministry of Railways They are dual cab locomotives.
Number 0301 - 0330 are single cab locomotives. They are coupled back to back and used on Tibet line.
Number 7001 - 7004 are delivered to Shenhua Mining Group.
The locomotive has been deployed to Qinghai–Tibet railway in 2018.国产机车承担青藏铁路格拉线牵引任务，此前均由美国机车完成
See also List of locomotives in China Electro-Motive Diesel EMD SD90MAC EMD 265 China Railways HXN5
References
CNR Corp. Spec Page