Blue Sea 9004 e-Series On-Off Battery Switch

SKU: BS9004

350A Continuous Rating for applications requiring high power output,reliability, and low heat generation.

  • 350A Continuous Rating - 45% higher than standard switches
  • Accepts up to 4/0 battery cables
  • Luminous label for low light reading
  • Ignition protected - Safe for installation aboard gasoline powered boats
  • 3/8 inch-16 tin-plated copper studs for maximum conductivity and corrosion resistance
  • Make-before-break contact design for switching between battery banks without power interruption
  • AFD (Alternator Field Disconnect) switch Meets all American Boat and Yacht Council (ABYC) requirements for battery switches
  • Tactile textures indicate knob position by feel only
  • Case design allows surface or flush mounting
  • Fits all Perko low amperage battery switch hole patterns


  • Inrush Rating: 0.25 sec (10 repeats)1,600 Amperes DC
  • Cranking Rating: 9.75 sec (10 repeats)700 Amperes DC
  • Intermittent Rating: 5 min (UL 1107)600 Amperes DC
  • Continuous Rating: (UL 1107)350 Amperes DC
  • Voltage Rating32 Volts DC Maximum
  • Case MaterialLexan® Polycarbonate
  • Stud Terminal Size3/8 inch-16
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