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Blue Sea Systems


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Simplifies switching and automates charging for a 120A, two battery bank solution for inboard and outboard powered boats

  • For alternators up to 120A
  • Includes the e-Series Dual Circuit Plus Battery Switch BS-5511E and the SI-ACR Automatic Charging Relay BS-7610

e-Series Dual Circuit Plus™ Battery Switch

  • Switches two battery banks simultaneously while maintaining battery bank isolation
  • Can combine two battery banks in the event of a low start battery
  • P66 - protected against powerful water jets

SI-ACR Automatic Charging Relay

  • Automatically combines battery banks when charging and isolates when discharging
  • Start isolation protects sensitive electronics
  • Dual Sensing senses charge on two battery banks
  • IP67 - protected against immersion up to 1 meter for 30 minutes

After ordering online, you will receive an automated email confirmation containing your order details. Your order will then be confirmed within a few minutes of placing your order.

It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example, chain may come by road, some electronic equipment by air.

Most orders are shipped within 2 - 5 Days

Shipping rates

Orders delivered to Australian Post Codes under $499 attract an $18.00 shipping charge.

Orders of $499 or more ship free.*

For Remote areas and bulky items. If the cost to send is vastly different to our standard delivery costs, someone from our team will contact you prior to dispatch to arrange further payment or to issue a refund if you are not happy with the additional charges.

International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

Should you have any queries or concerns about shipping, please don't hesitate to get in touch by clicking the support button on bottom right of the page.

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