Blue Sea 3002 HD-Series Battery Switch Selector

The Blue Sea Systems 3002 HD-Series Battery Switch Selector is rated 500A continuous, accepts 4/0 battery cable and meets ABYC requirements.

Accepting 4/0 cable is the specification that separates this from a recreational selector, which typically tops out well below that. A 500A continuous rating means nothing if the studs will not take the cable the installation needs, and 4/0 is what large engines and inverter feeds are wired with.

The case fits common Perko and Guest low-amperage switch hole patterns, which turns an upgrade into a straightforward swap on many boats. That compatibility matters on a refit, where cutting a new opening in finished joinery is the part nobody wants to do.

Tactile textures on the knob let the position be identified by feel, useful in a dark or confined battery compartment. Tin-plated copper studs give conductivity and corrosion resistance with extended length for stacked terminals, and it is ignition protected for gasoline boats with surface or rear-panel mounting. Explore more battery switches.

• Takes 4/0 cable, unlike recreational selectors
• A 500A rating is useless if the cable will not fit
• Fits common Perko and Guest hole patterns
• Knob texture identifies position by feel