At present, RDSO specification no. RDSO/PE/SPEC/AC/0184-2015, Rev-0 or latest exists for Design, Manufacture, Testing and Supply of Switch Board Cabinet consisting of all the power/control switchgear for coach lighting, air conditioning, pantry, pump control, sanitary system and public address system etc. of LHB type AC EOG/HOG Coaches suitable for 3 phase, 750 volts AC, 50 Hz system. With the introduction of LHB GaribRath Coaches with increased number of berths (83 nos. ), the on board space for installation of Switch Board Cabinet has reduced drastically. In view of this, the on-board Switch Board Cabinet has been split into two parts i. e. Under- slung Cubicle and On Board Cubicle. However, the existing Switch Board Cabinet to RDSO specification no. RDSO/PE/SPEC/AC/0184-2015, Rev.0 or latest shall be the most relevant specification for functional requirements of scheme.