Perko 8511DP Battery Selector Switch - Compact Medium Duty Marine Battery Switch For Boats

Boat owners, this Perko battery selector switch is one of those essential pieces of equipment that makes managing your marine electrical system so much easier.

The 8511DP model is compact but seriously capable - it handles 6 to 50 volt systems with a continuous rating of 250 amps and can push 360 amps for 5 minutes intermittently.

What's really smart is the make-before-break design that lets you switch between Battery 1, ALL, and Battery 2 positions even while your engine is running - no more worrying about killing your alternator when you need to switch batteries.

The ignition protection means it's safe to install in gasoline engine compartments, which is huge for proper boat safety.

The polycarbonate body is bright red for visibility with brass terminals that provide excellent conductivity.

The four removable skirt panels make cable connection from different directions way easier, and the 3/8” terminals are long enough to handle multiple cables if needed.

At 4”x4”x3”, it's compact enough to fit in tight spaces but still substantial feeling.

Whether you're running multiple batteries for different purposes, need parallel starting capability, or just want a reliable disconnect switch, this Perko unit delivers professional-grade performance in a package that's straightforward to install and built to handle the marine environment.