BR943 Feb 1971
Specification for Miniature Travtive Armature AC Immune DC Biased Contactor Relay, Plug-in Type for Railway Signalling Purposes
This specification relates to design requirements for miniature tractive armature d.c. biased neutral contactor relays of the plug-in type for use in railway signalling circuits irrespective of the presence in the control circuit of alternating current at industrial frequency.
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- In Force: