tender for relay, ac immunised, plug-in-type, style qta2, dc neutral track, 9 ohm dc 2f,1b contacts, front and back contacts metal to carbon, complete with plug board,retaining clip and connectors confirming to brs:939a, brs:966 (appendix f2) irs: s 34 andirs: s 23 (as applicable). the interlocking code for this unit shall be fghkx.
