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BS 764:1990

Specification for automatic change-over contactors for emergency lighting systems

Standard Details

Design and performance requirements for d.c. and single-phase a.c. double-pole change-over contactors for low-voltages up to 250 volts and a range of standard current ratings, which are used to provide the automatic transfer of current supplied to safety lights from the normal source to an alternative source when the normal source fails; reconnection is automatic when the normal supply conditions are restored.

General Information

Status : Confirmed
Standard Type: Main
Document No: BS 764:1990
Document Year: 1990
Pages: 14
  • Section Volume:
  • GBM19 Electrical Accessories & Special Equipment (GMB19)

Life Cycle

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Confirmed
BS 764:1990

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