Tenders for Supply of Q-Series Neutral Line Relay, Non-Ac Immunised, Qn1 Type, 8F/8B, 24V Dc Complete With Plug Boardbase Plate, Connectors And Retaining Clips Etc And Conforming To Brs- 930 And Rdso Specn.No.Irs:S- 34, S-23, S-60 Or Latest, As Applicable. The Interlocking Code For This Unit Shall Be Abcdf.