"Battery-switch installation has never been easier than with the Marinco Power Products Pro Installer 400A EZ-Mount On/Off Battery Switch. With its shared interconnection height, the Marinco Power Products Pro Installer 400A EZ-Mount On/Off Battery Switch delivers the fastest, most compact installations. This premium battery switch sets the new benchmark with outstanding ergonomics, an intuitive look/feel, and engineering with the finest materialsstainless steel washers and nuts, tinned copper studs, and fiber-reinforced plasticsto withstand the harshest marine conditions. Waterproof to IP66, your new Marinco battery switch features 3 removable sideplates for protection, and the industry-standard 3.85"" x 3.85"" footprint. Manufacturer model #: 771 S EZ. Tested to UL1107 ignition protection, CE Tinned copper 10mm (3/8"") studs Stainless steel washersuts Fiber reinforced plastics 400A Continuous / 600A 5 mins. Intermittent / 1500A 10 secs. Cranking Waterproof to IP66 Removable knob allows isolation during servicing 3 removable sideplates for protection Industry-standard 3.85"" x 3.85"" footprint"