Field of use:

The switching electromechanisms EM5-A (without reducer) and EM5R-A (with reducer) are used in SCB installations.
The basic functions of the switch electromechanism are:

• Ensures in extreme positions the gluing and fixing of the counter needle;
• Ensures control of the extreme positions of the switch pins;
• Ensures a stroke of 220 ± 5 mm, is of the heel type and can be used for both single and double junction switches, using the adjustable actuation and control bar gasket;

• EM5-A and EM5R-A electromechanical units can be operated electrically with a remote control from a central or manual station using a crank.
The switch electromechanism is driven by an asynchronous motor with the short-circuited rotor connected to the star. Switches electromechanisms operated with asynchronous motor can be built, at the request of the beneficiary, in the following variants: non-heelable, heelable.

Technical-constructive parameters:

• Swivel electromechanisms can be mounted on both sides of the derailleur on sleepers due to the possibility of mounting the rack and control lines.
• Nominal handling force:
– 7500 N for electromechanisms with EM5R-A reducer, in any conditions, without stopping the engine;
– 4500 N for electromechanisms without EM5-A reducer, under the same conditions;
• The maximum heeling effort must be 15000 N without causing self-heeling;
• The drive motor is AC, minimum protected IP40 (SR EN 60529-95), rated voltage 3 x 380 V, max. 2.29A, rated speed 940 ± 10% rpm;
• The box of the switch electromechanism is provided with a cover for the protection of the rack and of the galvanically insulated control lines.
Overall dimensions and weight:
• Length 865 mm;
• Width (including the protective cover of the rack and the control lines) -1070 mm;
• Height: 245 mm;
• Weight: approx. 210 Kg.

The electromechanism ensures the operation at nominal load and in the conditions in which the supply voltage decreases by 20% compared to the nominal one due to the resistance of the very long supply cable (maximum 50 W per phase).