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.
Original price was: $264.16.$132.00Current price is: $132.00.
Specification. Automatic change-over contactors for emergency lighting systems
BSI Group , 06/12/1974
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