The Class 01.10 series belongs to the type 2'C1' h3. It has 2 successive running axles united in one bogie, independent of the main frame, and 1 running axle independent of the main frame. The steam type is superheated steam and the machines have 2 or 3 cylinders.

Like the 01 series, the Class 01.10 series was given an ingot frame with a cheek thickness of 100 millimetres, reduced to 40 millimetres in the area of the drag wheel set.
The leading bogie was designed to be laterally displaceable by 70 millimetres, as in the 01 series. The coupling wheel sets were mounted firmly in the frame and the flanges of the second coupling wheel set were reduced by 15 millimetres. The trailing wheelset was designed as an adam axle with 80 millimetres of lateral displacement.

The three-cylinder hot steam engine with single steam expansion was designed with a two-speed drive. The two outer cylinders act on the second coupling wheel set and the diagonally arranged middle cylinder on the head shaft of the first coupling wheel set. All cylinders got a separate Heusinger control.

In the original version, Nicolai type pressure compensation slides were used. Both DBs were converted to the Müller type. Furthermore the DB equipped the machines with roller bearings instead of slide bearings for drive and coupling rods.

The original boiler was made of St 47 K in rivet construction, with welded firebox made of IZ-II steel. A steam jet pump and a compound feed pump with surface heat exchanger was provided as feeding equipment.

The high-performance boilers with combustion chamber installed in the 1950s were made of St 34. The upright boiler and the long boiler walls were made of H I A and the firebox of steel grade IZ II. A non-suction steam jet pump and a piston feed pump with mixing preheater of the Heinl type, was installed as boiler feed. For the new boiler Class 01.10 a wet steam controller of the Wagner type was used again.

The Class 01.10 series was able to transport a wagon train weight of 1000 tons on the flat at 100 km/h and on a gradient of seven per mille at 30 km/h. A train weighing 440 tons could be transported on a gradient of four per mille at 100 km/h. On level sections, 660 tonnes could be carried at 120 km/h.

Remaining of the Class 01.10

01 1056 is in the Railway Museum Darmstadt-Kranichstein, on loan from the DB Museum Nuremberg.
01 1061 has been stored in the German Steam Locomotive Museum in Neuenmarkt-Wirsberg since 1975.
01 1063 has been standing on the forecourt of Braunschweig main station since 1977 as a listed locomotive.
01 1066 belongs to the Ulmer Eisenbahnfreunde. It is looked after and driven by the Historical Steam Express Train Section. It is housed in the South German Railway Museum in Heilbronn. The 01 1066 is not operational because of the deadline.
01 1075 is operational and is located at the Sttom Stichting Nederland in Rotterdam. It has a licence on the network of DB Ag and NL Eisenbahn.
It is used in Germany and the Netherlands before historical special trains.
01 1081 is being refurbished as a museum exhibit in the Augsburg railway park.
01 1082 is in the German Museum of Technology in Berlin
01 1100 was moved to the branch office of VM Nürnberg in Koblenz in October 2018 and is once again open to the public. Due to the insolvency of the Oberhausen association, a financially costly recommissioning had failed.
01 1102 is owned by the Klings family foundation. From 1995 onwards, 01 1102 was completely reconditioned by Dampflokwerk Meiningen and was put back into service on 6 March 1996. The locomotive has a streamlined fairing as it was installed in 1939 in the original version. In contrast to the black-red colour scheme, 01 1102 was painted steel blue-red. Currently, the locomotive is not operational due to an accident in December 2004.
01 1104 was exhibited in Steamtown Carnforth in England from 1975 to 1996. It was then transferred to the Eisenbahnmuseum Nördlingen and later on to the SEH. The locomotive has been in refurbishment since 2010. It is operated by Faszination Dampf e.V. in cooperation with the Joachim Schmidt Railway Foundation in Crailsheim. In summer 2015 01 1104 was transferred to Krefeld to the Eisenbahnwerkstätten GmbH for final completion. The recommissioning originally planned for September 2018 had to be postponed to 2020 in June 2018 due to unexpectedly high additional repair costs for the tender and other parts of the locomotive.