The Blue Sea Systems ML-Series solenoid switches have a 500A magnetic latching solenoid providing switching under loads where manual control is not required. The silver alloy contacts provide high reliability for switching live loads. LED output to remotely indicate switch state - requires optional LED or Remote Control Contura Switch with integrated LED (included in retail package). 3/8" - 16 tin plated copper studs provide maximum conductivity and corrosion resistance. One-piece stainless flange nuts allow for safe and secure connections. Includes label recesses for circuit identification.