500 Amp magnetic latching (bi-stable) switch provides high-amp switching under load, manually or from remote locations. Manual override knob provides an added level of safety allowing control with or without power and offering LOCKED OFF capability for servicing. 3/8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance. 7/8" stud length accepts multiple cable terminals. Label recesses for circuit identification. Includes remote control contura switch.