Power Supply On/Off Switch, Place Of Installation: S1S02 In Switch Board Cabinet Of Lhb Ac Coaches As Per Rdso Spec. No. Rdso/Pe/Spec/Ac/0184-2015 (Rev.1) Or Lat. And Rdso Ltr. No. El/7.1.108/Mssbc Dt.: 17-09-21. Make As Per Bom Are Siemens Cat. No. 3Sb50002Ab013Sb54000E, L&T Cat. No. Emncsk1Ec1C, Schneider Cat. No. Xb5Ad33Nzbe101Nzbe102N, Abb Part No. M3Ss1-10Bmcbh00Mcb-10 Or Teknic Only.