Manual Battery Switches

These are familiar to most boaters as a large, usually red switch with a round face and prominent knob. The 4-position selector switch has long been the industry standard for managing the selection and charging of two battery banks. Blue Sea Systems has three families of manual battery switches.

  • The compact m-Series is rated at 300A continuous and is ideal for outboard motors or small inboard engines.
  • The standard e-Series has a 350A continuous current rating and is a popular replacement switch.
  • The heavy-duty HD-Series can carry up to 600A of continuous current, making it an excellent choice for boats with large diesel engines.

 

Blue Seas Battery Switch

Some switches have an auxiliary contact called an AFD (for Alternator Field Disconnect) which is used to disable the alternator field whenever the switch is turned to an open position. Otherwise, the alternator diodes are susceptible to damage by "cutting" the charge current to the battery.

23 Products Found

M-Series Battery Switch

Blue Seas M-Series Battery Switch Features

Features

  • 300 Ampere continuous rating for outboards and small petrol or diesel engines
  • Ignition protected—safe for installation aboard gasoline powered boats
  • Case design allows surface, front panel, or rear panel mounting
  • Isolating cover with snap-on sections protects rear contacts

BNlue Seas M Series Dimension Drawing

E-Series Battery Switch

Blue Seas E-Series Marine Battery Switch

Features

  • 350 Ampere continuous rating for inboard petrol or diesel engines
  • Ignition protected—safe for installation aboard gasoline powered boats
  • Case design allows surface or rear panel mounting
  • Meets American Boat and Yacht Council (ABYC) requirements for battery switches

Blue Seas E Series Battery Switch Dimension

HD-Series Battery Switch

Blue Seas HD Series Marine Battery Switch

Features

  • Up to 600 Ampere continuous rating for large diesel engines
  • Meets American Boat and Yacht Council (ABYC) requirements for battery switches
  • Ignition protected—safe for installation aboard gasoline powered boats
  • Case design allows surface or rear panel mounting
  • Accepts two 4/0 AWG (95mm²) battery cables

Blue Seas HD Series Dimension Drawing