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500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine Features:- Includes ML-Series Remote Control Contura Switch PN 2146.- Automatically manages the charging of two large battery banks.- Allows paralleling of battery banks for emergency starting.- 500 Ampere continuous rating to support high-output alternators.- Magnetic Latch (ML)—ACR draws very low current (