The 12651 / 12652 Tamil Nadu Sampark Kranti Express is one of the Sampark Kranti Express trains, operating on India's broad-gauge network that connects in Tamil Nadu and in New Delhi, a distance of approximately in 42 hours approximately, maintaining an average speed of . From April 2021, it runs with newly manufactured highly refurbished LHB rakes.
This bi-weekly train was introduced to provide a quicker journey from New Delhi to Tamil Nadu. Southern Railway began operating the train on 19 September 2004. It shares its rakes with 22623/22624 MaduraiâÂÂChennai EgmoreâÂÂMadurai Bi-weekly Superfast Express (via Dindigul, Trichy, Thanjavur, Viluppuram).
It runs from Madurai Junction via , , , , , , , , , , , , to Hazrat Nizamuddin.
The route is fully electrified, it is hauled by a Royapuram Loco Shed-based WAP-7 electric locomotive from end to end journey.