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  ABB Phase, Voltage Monitoring Relay With SPST Contacts, 1, 3 Phase, 320 → 460 V ac [1SVR550871R9500]; 442-9449

  ABB

  THÔNG SỐ KỸ THUẬT Monitoring Application Phase, Voltage Supply Voltage 320 → 460 V ac Contact Configuration SPST Voltage Sensitivity ...

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