Battery Switch

Australia wide delivery at competitive prices.

  M Series Selector 4 Position Red
M-Series Battery Switch (‏11)
  E Series Single Circuit ON/OFF w/AFD
E-Series Battery Switch (‏7)
  HD Series Selector 3 Pos w/AFD
HD-Series Battery Switch (‏5)
Call (07) 5563 9088 for assistance.

Blue Seas Battery SwitchThese 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.

Battery switches isolate the potentially destructive energy in the battery banks when the boat is not in use or during emergencies.They are available in different configurations according to the application.

Single Circuit

The single circuit switch is the simplest and is used for either  isolating batteries or as a simple on/off switch for heavy current consumers such as bow thrusters and inverters.

  • Top Position - OFF
  • Bottom Position - On
   Single Circuit Battery Switch
   

Selector 3 Position

For dual battery systems, the 3 position selector switch can select either battery to power the circuit or in the centre position completely isolate the load from the batteries.

  • Left Position  - Battery 1
  • Centre Position - OFF
  • Right Position - Battery 2
   Selector 3 Position Battery Switch
     

Selector 4 Position

Again for dual battery systems, the 4 position selector switch can select either battery to power the circuit but adds a fourth position that combines both batteries in parallel. This feature is used for charging both batteries from a single source or for combining both banks to provide the maximum power for engine cranking.

  • Left Position  - Battery 1
  • Top Position - OFF
  • Right Position - Battery 2
  • Bottom Position - Combined
   Selector 4 Position Battery Switch
     

Dual Circuit

The Dual Circuit battery switch simultaneously switches two isolated battery banks to individual loads. The battery banks can also be of different voltage as is the case in a 12 volt engine cranking system with a 24 volt house bank.

Another application is to simultaneously swith both the positive and negative circuits of a single battery.

  • Top Position - OFF
  • Right Position - ON
   Dual Circuit Battery Switch
     

 Dual Circuit Plus

The Dual Circuit Plus simultaneously switches two isolated battery banks or combines battery banks to all loads.The combined position feature is used for charging both batteries from a single source or for combining both banks to provide the maximum power for engine cranking.

  • Top - OFF
  • Right - ON
  • 5 o'clock - COMBINED
  Dual Circuit Plus Battery Switch

Battery Switch Ratings

 The UL standard for marine battery switches is UL 1107. This standard rates switches for 5 minute and 1 hour time periods. These ratings are not useful to the boater using a switch in the engine starting circuit where current durations may be 10-60 seconds.

For this reason, Blue Sea Systems uses additional testing, consisting of a high amperage load during a cranking period of 10 seconds. An additional 60-second rating, representative of the load imposed on a battery switch in the starting circuit under very difficult starting conditions, is also given. These 10 and 60 second ratings are in addition to the testing done to UL 1107.

When determining the proper size battery switch, consult your engine manufacturer for the amperage requirements of your engine starting motor.