Prototype: German Federal Railroad (DB) class TVT 621.9 Esn maintenance vehicle as an adjustment/monitoring powered rail car. Movable work platform and double arm pantograph included. A type X 05 low side cart with a brakeman's platform included as a catenary wire parts car. Loaded with cable drums, took boxes, and ladders. Used for servicing and checking catenary.
 

Model: This model has an mfx digital decoder and a sound effects generator. It also has controlled, high-efficiency Softdrive Sine propulsion and a compact-design, maintenance-free motor. 2 axles powered. Traction tires. The headlights (warm white LEDs) and the red marker lights are maintenance-free LEDs, they will work in conventional operation, and can be controlled digitally. The engineer's cab has interior details. The separately applied details are: skylight, antenna, horn, work lights, and ladders. The work platform can be raised, lowered, and turned mechanically. The double arm pantographs can be raised and lowered mechanically; they are not wired to take power from catenary. The catenary parts car comes loaded with reproductions of cable drums, tool boxes, and ladders. There is a special coupling between the powered catenary maintenance car and the catenary parts car. Total length over the buffers 27.6 cm / 10-7/8".

One-time series.
 

Powered Catenary Maintenance Rail Cars. The increasing electrification of railroad routes also necessitated maintenance vehicles for the catenary wires. Between 1955 and 1974, the German Federal Railroad (DB) purchased 92 powered catenary maintenance rail cars (late the class 701) based on the proven Uerdinger VT 98 rail bus. These powered rail cars have a maximum speed of 90 km/h / 56 mph. There is a rest area between the engineer's cabs that is equipped with a small workshop with shelves, a work bench, and places to sit and to wash. The pantograph on the roof is used only for grounding and to check the position of the catenary wire. The hydraulic work platform has a capacity for up to 300 kilograms / 661 pounds and it can be raised and turned. It offers almost unlimited access to the catenary wire. In addition, there is a floodlight on the roof and an observation cupola. The powered catenary maintenance rail cars were originally painted in crimson until the German Federal Railroad prescribed a striking yellow paint scheme for its maintenance vehicles.