BS 764:1954

Specification. Automatic change-over contactors for emergency lighting systems

BSI Group , 06/12/1974

$132.00 $264.16

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.