Railways applications. Direct current signalling relays Ingestion-build-251241 3 Designation of side and

3 Designation of side and indication of dimensions

variables block

The current version of BS 952-1 is prepared under the direction of the Sector Board for Building and Civil Engineering

This type of chuck has jaws known as “one-piece hard jaws”

This International Standard specifies a method for the determination of loss of mass on heating of aluminium oxide at 300 °C and further loss of mass on ignition at 1 000 °C

Railways applications. Direct current signalling relays Ingestion-build-251241 3 Designation of side and1 Scope This European Standard gives requirements for direct current relays intended for safety related applications in railway signalling installations. This European Standard is applicable to monostable relays. However it can also be used as a guide for other relays such as with bistable relays.