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BS 764:1954

Withdrawn Date published:

Warning: Withdrawn Standard. This document has been replaced by:

Specification. Automatic change-over contactors for emergency lighting systems

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Contactors which automatically transfer circuits from the normal source of supply to an alternative source when the normal source fails; reconnection is automatic when normal conditions are restored. Performance and constructional details of double-pole contactors for low voltages; range of standard current ratings.

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BS 764:1954

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