7620Manual Control NoCoil Voltage 12V DC Combines battery banks during charging and isolates under discharge 500 Ampere continuous rating suitable for use with large battery banks, starters, alternators, and inverter/chargers Includes ML-Series Remote Control Contura Switch PN 2146 Silver alloy contacts provide high reliability 3/8 copper studs, using Blue Sea Systems superior one piece stud technology, suitable for 300 Ampere continuous rating and large cable connections WARNING This product can expose you to chemicals including di 2-ethylhexyl phthalate dehp which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.