The ML-RBS is a latching solenoid that only uses energy briefly while being turned on or off. This battery switch requires a three wire connection to the remote switch to achieve this feat. The 500 amp rating makes it suitable for the biggest of battery banks. This specific battery switch features a manual control override on the actual switch itself. The silver alloy contacts provide high reliability when switching live loads. Includes an ML-Series Contura Panel Switch (2145).Note: This item is preowned & has been used. Despite that, both the ML-Battery Switch & Panel Switch are in great shape, with no signs of warping in shape/size. We do not sell nor ship outside the US.