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What is the method of the operation of a contactor? How are A1 & A2 powered? Can both A1 & A2 be powered by +ve & -ve and +ve & +ve or
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40A Contactor AC Carril Din 2 polos, Contactor AC 1NO 1NC 50 / 60HZ, Ahorra energía(220V/230V) Contactores Contactores : Amazon.es: Industria, empresas y ciencia
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