The AEG DE IC-2000N's currently operate long-distance services on the Thessaloniki-Alexandroupolis and Alexandroupoli-Ormenio routes[2] and local trains on the Alexandroupolis-Svilengrad line.

[3] In 1986, OSE, in the context of upgrading the fleet, proceeded to order new trainsets of high quality and specification.

As a product of co-operation between the (then) two German states, new trainsets brought many innovations to the greek rolling stock fleet.

Each diesel engine rotates a generator that supplies current to 2 electric motors under every carriage, which then transmit the movement to their respective bogeys with Cardan transmission bridges.

The addition of an intermediate coach with 54 A-seat seats gives the opportunity to create a space for the vehicle with a canteen.

Until 2011, 520 class continued to run InterCity and ICE on the Thessaloniki-Athens route as well as various other types of service across the country.

From 2011, they only perform the local Athens-Lianocladi and Athens-Larissa and remain only in double couling[clarification needed] of fast routes on the axis.