2. Electric Point Machines commonly uses a DC motor which operates through gear,clutch, cams and bar converting rotary movement of the motor to linear movement of the rod which operates the points.The movement of the points can be detected by a sensing mechanism which will stop further movement and initiate locking of the points wherever applicable. The position of the points will then determine the route set enabling diversion of trains as intended. In the locked position the machine shall be capable of withstanding a thrust of 9000 Kg. through the connection.

3. The part of the point mechanism , which engages in corresponding notch in the lock rod so as to effect mechanical locking of the point is called a 'Locking Dog'.

4. The Electric Point Machine can be easily interfaced with modern solid state interlocking system. Depending on the operating logic, an output from the interlocking system through interface relay can operate an Electric Point Machine. Feedback from the points are input into the interlocking system which monitors the point status and progresses the logic further.

5. Electric Point Machines are supposed to be housed in a robust weather-proof casing and capable of withstanding harsh outdoor climate with extreme temperature swings, rain, storm and accumulation of water.

6. The Electric Point Machine should have a rated life of not less than 1,50,000 cycles of operation at the rate of 2 cycles per minute.