BLUE SEA Dual Circuit Battery Switch / 300 A

14 in stock
SVB price: €58.78
Excl. VAT, excl. shipping costs.
This is a NET-price excluding German VAT. Shipments to countries outside of the EU may be subject to import duties and taxes.
€58.78 This is a NET-price excluding German VAT. Shipments to countries outside of the EU may be subject to import duties and taxes.
Item no.
Model no.
BLUE SEA - Dual Circuit Battery Switch, 300 A
Operating voltage
12 V, 24 V
Switch position
Switch function
Main switch
Connector pins

Product details

This m-serie dual circuit battery switch meets the American Boat and Yacht Council (ABYC) requirements for battery switches and is suitable for outboard engines, small gasoline or diesel engines. IP66 protected against powerful water jets. The handy switch allows comfortable operating. Flexible mounting options: rear panel, front panel or surface.

This switch allows to connect two isolated battery banks simultaneously with to two different consumers (board consumption and motor). Suitable for operating voltages of 6 - 32 v.

  • continuous load: 300 A
  • peak load (for 5 min) 450 A
  • peak load (for 10 sec): 1000 A
  • water resistant according to IP 66
  • torque 120 in-lb (13.56Nm)
  • 4 connector pins: M10 (3/8" - 16)
  • dimension: 72 x 72 x 78 mm


en-flag Manual
PDF, 313,43 KB
multi-flag Drawing
PDF, 130,67 KB

What other SVB customers have to say

100% real reviews

15 customer reviews

4.8 (out of 15 ratings)
3 Stars
2 Stars
1 Stars
Tomasz L.
by Tomasz L. Flag of Poland 6/3/2015 Verified purchase
Hight quality, nice design, recommended!!!
Denes Z.
by Denes Z. Flag of Hungary 10/29/2014 Verified purchase
Excellent product, fast shipping.
Frank S.
by Frank S. Flag of Germany 10/27/2023 Verified purchase
full trust
This company is just great. Never any trouble, everything works, nice advice, absolutely professional and the price-performance ratio is unbeatable.
Everything just fits here. Only with you. Thanks
View all ratings

Rate product

How would you rate this product?
Completely fails to meet my expectations
Only some expectations are met
Meets my basic expectations
Slightly better than my general expectations
Fully exceeds my expectations
Click on the stars to rate

Customers ask customers

Ask other SVB customers who have already purchased this product from us about their experience.

Your question will be automatically forwarded to other SVB customers and published on the product page. Please do not ask any questions which can only be answered by the SVB team – such as the status of an order or product availability. You are also more than welcome to contact our SVB team by email at: or by phone on: +49 (0)421 57290510 .

Technical question

User image of Piers D.
Piers D. asked
on Mar 29, 2018
Flag of English Good Morning ! Do you supply the BLUE SEA E-series DUAL CIRCUIT PLUS battery Switch - part N° 5511E ? Please also confirm price if this reference is available. Technical question : I will be installing a Dual battery system on my boat. In the beginning I will only use the DUAL battery switch (indicated above) for battery management _and battery charging. At first, I will NOT be using the Blue Sea ACR Automatic Charging Relay ( M_ACR / 65A)... i will only use the dual battery swith for charging the batteries. The ACR unit will be installed later .. Question : Is the dual battery installation charging operation easy / simple with this switch without the ACR ? Thanking you Best regards Piers D
User image of Sven W.
Sven W. answered
on Dec 28, 2018
Dear Pires, yes it is possible for us to order different Blue Sea Products. Please let us know if your technical inquiry is still current. Your SVB-team.