I am using a 40A relay of a 12V coil of 140mA with a diode for a 24V 25A load. I suppose during the opening and closing of the contact, which is likely under strong impact of 25A current flow of sparks, in the long run, the formation of deposition of oxide and worn out will lead to poor current conduction.
Is there any circuit enhancement to improve or to reduce the high impact of spark? If SCR is a better choice?
Is there any circuit enhancement to improve or to reduce the high impact of spark? If SCR is a better choice?