BR941 May 1972
Specification for Miniature Tractive Armature AC Lamp Proving Relay Plug-in Type for Railway Signalling Purposes
This specification relates to design requirements for a miniature tractive armature slow release line relay of the plug-in type for use in 110v signalling circuits, incorporating a rectifier feed unit, and suitable for use with S.L.34 or S.L.35 lamps to B.S. 469.
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- In Force: