Prototype: Swiss Federal Railways (SBB) EC 250 electric high-speed rail car train as the class RABe 501 Giruno. 1 type A (Bt1) end car, 2nd class. 1 type F (B7) intermediate car, 2nd class, with handicapped entries and a pantograph. 1 type G (WR6) intermediate car, with a dining area. 1 type H (A5) intermediate car, 1st class, with handicapped entries and a pantograph. 1 type L (At2) end car, 1st class. In use as a multi-system powered rail car train between the Zürich Airport and Basle as well as across the Alps through the Gotthard Basis Tunnel to Milan. Permission planned for use in Germany and Austria. The train looks as it did in 2021.
Model: This is a 5-part basic set. The dining car G and the two intermediate cars F and H arranged on the left and right are coupled permanently to each other with Jakobs trucks. The train has a digital decoder and extensive sound and light functions. It also has controlled, high-efficiency propulsion with a flywheel, centrally mounted in the dining car. All 4 axles in both Jakobs trucks on the left and right of the dining car are powered using cardan shafts. Traction tires. The cabs in the end cars have interior details. Current pickup is done from the end car at the front of the train and changes with the direction of travel. There is a guide mechanism in the Jakobs trucks. Triple headlights and dual red marker lights change over with the direction of travel, will work in conventional operation, and can be controlled digitally. The train can be switched to a white marker light (Swiss headlight / marker light code). There are additional separately controlled light functions. The train has factory-installed interior lighting. The interior lighting is supplied with power from a continuous electrical connection throughout the entire train. The cab and control desk lighting are also each controlled separately in digital operation. Maintenance-free warm white and red LEDs are used for all of the lighting. The pantographs on the F and H intermediate cars can each be raised and lowered separately as a digital function. The train is modelled true-to-scale. The minimum radius for operation is 360 mm / 14-3/16. Length of the basic set approximately 112 cm / 44-1/8.

The 25810 5-part basic set can be expanded to a prototypical 11-part powered rail car train with the 23281, 23282, and 23283 2-part add-on car sets.

The basic set of the class RABe 501 Giruno high-speed rail car train can be found in an AC version in the Märklin H0 assortment under item number 39810.