Tenders for Supply of Q-Series Line Relay Qna1 Type, Ac Immunized, 8F/8B, 24 V Dc Along With Plug Board Base Plate, Connectors, Retaining Clips Etc And Conforming To Brs-931A And Rdso Specn.No.Irs:S-34, S-23, S-60 Or Latest, As Applicable. The Interlocking Code For This Unit Shall Be Abdgh.