SKU: 78729111247

Blue Sea 350A Red e-Series Dual Circuit+ Battery Switch

Sale price$90.82 Regular price$100.91
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Description

Blue Sea 350A Red e-Series Dual Circuit+ Battery SwitchSimplify Marine Power Management with the e Series Dual Circuit Plus Managing multiple battery banks on a vessel often involves complex wiring or the risk of draining your starting battery through house loads. The Blue Sea e Series Dual Circuit Plus Battery Switch offers a sophisticated solution by simultaneously switching two isolated battery banks with a single ON OFF knob. This intuitive design ensures that your engine starting battery remains

Simplify Marine Power Management with the e-Series Dual Circuit Plus

Managing multiple battery banks on a vessel often involves complex wiring or the risk of draining your starting battery through house loads. The Blue Sea e-Series Dual Circuit Plus Battery Switch offers a sophisticated solution by simultaneously switching two isolated battery banks with a single ON/OFF knob. This intuitive design ensures that your engine starting battery remains isolated from your house battery circuit, preserving critical cranking power while protecting sensitive electronics from voltage spikes during engine starting.

Simultaneous Switching and Isolation

Unlike traditional selector switches that force you to choose between batteries, the Dual Circuit Plus acts as two switches in one. When turned to the ON position, it connects the start battery to the engine and the house battery to the distribution panel simultaneously, yet keeps the circuits electrically separate. This isolation is crucial for modern boating; it allows you to run refrigerators, lighting, and audio systems from the house bank without the risk of depleting the battery required to start the engine. It effectively solves the common problem of accidental starting battery discharge while at anchor.

Emergency Parallel Functionality

Safety and redundancy are paramount in marine environments. In the event of a flat starting battery, this switch features a "Combine Batteries" position. By rotating the knob to this setting, you can parallel both battery banks, utilising the capacity of the house bank to provide the necessary amperage to start the engine. This built-in emergency cross-over eliminates the need for jumper cables or separate emergency parallel solenoids, providing immediate peace of mind when you are far from shore.

Engineered for Harsh Marine Environments

Built to withstand the rigours of the ocean, the e-Series switch features tinned copper studs for maximum conductivity and corrosion resistance. The 3/8"-16 (Approx. M10) terminal studs are designed to accept heavy-duty ring terminals, accommodating cables up to 4/0 AWG (Approx. 120mm²). The switch is rated for a continuous current of 350A per circuit, making it suitable for most small to medium-sized outboards and inboard engines.

Additionally, the unit is ignition protected, making it safe for installation in the engine rooms of petrol-powered boats. This safety rating ensures the switch will not ignite flammable fumes, a critical requirement for compliance and safety on board.

Make-Before-Break Design

The internal mechanism utilises a make-before-break contact design. This allows you to switch between the "ON" and "COMBINE" positions without momentarily cutting power, ensuring that GPS units, radios, and other sensitive electronics do not reboot or lose signal during critical switching operations.

Key Features

  • Dual Circuit Plus Design: Switches two battery banks simultaneously while maintaining isolation
  • Emergency Combine: Parallels banks to start the engine if the starting battery is low
  • High Current Rating: Handles 350A continuous current per circuit suitable for substantial loads
  • Ignition Protected: Safe for installation aboard petrol-powered vessels
  • Corrosion Resistant: Tinned copper 3/8"-16 (Approx. M10) studs ensure long-lasting electrical connections
  • Make-Before-Break Contact: Allows switching without interrupting power to electronics
  • Versatile Mounting: Case design supports surface or rear panel installation

Upgrade Your Battery System Today

Ensure your vessel's power system is safe, logical, and reliable. Install the Blue Sea e-Series Dual Circuit Plus Battery Switch to protect your engine battery and simplify your onboard power management.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78729111247

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4.0 ★★★★★
Based on 24 reviews
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Verified Purchase
Whitney
Belleville, US
★★★★★ 1
Needs to be Re-designed
I will update this rating depending on the outcome of my customer service/support experience. At this time, I cannot recommend this product. Although it’s marketed for ATV use, it does not withstand the realities that come with ATV riding. The snaps on the straps securing the front of the shade come undone with nearly every bump, making the shade unstable and frustrating to use. On our second trip out with it after about 3 hours of riding, the shade collapsed on me entirely. Initially, I thought the rear hooks had come loose, but to my surprise, the roof frame itself had snapped in half on both sides. I’m still unsure how this even happens. The metal completely snapped right where the roof poles bend in a U. Very odd. It forced us to remove the shade completely and carry it on the back of the quad for the rest of the ride since it was not functional anymore. Given this is only the second time we had even used it I would not recommend anyone purchase this product which is so unfortunate as living in AZ I had very high hopes for this product, as the concept is excellent, but it needs significant reinforcement to handle the rough terrain and constant movement involved in off-road riding and at this time I requesting a full refund and until this company revisits the design to make it sturdier and more reliable I will not consider purchasing again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025
J
Verified Purchase
John
New York, US
★★★★★ 4
It’s much more rigid than you might think.
The brackets did not fit the range of diameters that it said it would. Is pretty doofus when you lay it down backwards. It is however, more rigid than you might think. It works for me. I like it. Of course I can change things. I like the exterior fabric and I like the vinyl undercoating. I suspect it’s going to be waterproof as well. Now that I know, I’m not going to lay it down. I’m going to order a second one for my wifes quad, which is even narrower than the minimum they call out. 39.4”.
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Reviewed in the United States on October 2, 2024
A
Verified Purchase
Amazon Customer
Bozeman, US
★★★★★ 5
Great customer service
Stong headwind caused front straps to pop off and broke/bent frame. They replaced frame tubes with no hassle! Very impressed!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 22, 2024
S
S.
Dallas, US
★★★★★ 5
As shown
Nice kit. Simple to assemble, simply packed, good weight for the metal and the shade cloth. Actual width between attachment points is 44 inches. Tubing goes together with those push button things like on aluminum table legs. Priced commensurate with quality.
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Reviewed in the United States on September 17, 2024
L
Larry Sable
San Leandro, US
★★★★★ 5
Very ridged!
I put this on my can am outlander 850 and it was not a hard job to install it. Shade cloth is nice and so far holding up good to what I put it through. Tubing has the push buttons so putting it all together is pretty easy. I had to make some clips myself to get the install right but it was no big deal. 5 stars!!
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Reviewed in the United States on October 26, 2024

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