BS-1659 › Specification for tractive armature direct current neutral track and line relays for railway signalling

BS-1659 - PD 4019 - SUPERSEDED
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Specification for tractive armature direct current neutral track and line relays for railway signalling


To find similar documents by classification:

29.120.70 (Relays)

45.040 (Materials and components for railway engineering)

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Document Number

BS-1659

Revision Level

PD 4019

Status

Superseded

Publication Date

Jan. 1, 1961