Blue Sea Systems e-Series Dual Circuit Plus Battery Switch
Dual Circuit Plus switch — isolate two battery banks or combine them
SKU BLUE-5511E
e-Series Dual Circuit Plus battery switch, 350A continuous, 32V DC maximum. Switch two isolated circuits together or combine the battery banks.
- Switch Type
- Dual Circuit Plus
- Switch Positions
- 3
- Continuous Rating
- 350A
- Maximum Voltage
- 32V DC
- Battery Combine
- Yes
- Alternator Field Disconnect
- No
- Color
- Red
- Voltage
- 32V DC
Stocked items typically ship the next business day from our US warehouse. 30-day returns on unused stocked items. Exclusions apply. Return policy · Shipping policy
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About this product
Blue Sea Systems e-Series Dual Circuit Plus Battery Switch, 350A continuous, 32V DC maximum. Manufacturer PN 5511e.
The Blue Sea Systems e-Series Dual Circuit Plus battery switch simultaneously controls two isolated battery banks and their loads. Turn it on for independent start and house circuits, or use Combine Batteries when a bank needs assistance.
Key features
- 3 positions: Off, On and Combine Batteries; two battery inputs
- 350A continuous, 525A intermittent (5 min), 700A starting per circuit (30 sec)
- 32V DC maximum; 3/8"-16 (M10) tinned-copper studs
- Make-before-break contacts; ignition protected; surface or rear-panel mounting
This switch does not include Alternator Field Disconnect. Torque terminal studs to 140 in-lb (15.82 Nm). Its combine position is for connecting the banks when needed; the On position keeps the circuits isolated.
Product details
- Switch Type
- Dual Circuit Plus
- Switch Positions
- 3
- Continuous Rating
- 350A
- Maximum Voltage
- 32V DC
- Battery Combine
- Yes
- Alternator Field Disconnect
- No
- Color
- Red
- Voltage
- 32V DC
- Amperage
- 350A
- Manufacturer
- Blue Sea Systems
Shipping & returns
- Stocked items typically ship the next business day from our US warehouse.
- 30-day returns on unused stocked items. Exclusions apply. See policy
- Custom and quoted items are non-returnable once production begins.
Warranty
Backed by the original manufacturer’s warranty plus our workmanship guarantee on assembled harnesses. Contact us with your invoice and we’ll coordinate any covered repair or replacement.
Read the full warranty termsTechnical support
Need help choosing the right part?
Our marine electrical team can review your setup and recommend compatible products. Send a photo, a sketch, or your circuit list and we'll come back with a parts list that fits the boat.
Certifications & training
- ABYC-aware build practices
- OEM-grade marine wire & terminals
Additional capabilities are based on hands-on experience building marine wiring systems rather than third-party certification.
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Why buy from Common Ground Marine
- 20+ years building marine wiring harnesses, panels, and shore-power systems.
- Engineers — not a phone tree — review every custom build before parts are cut.
- OEM-grade components: tinned copper, sealed connectors, marine-rated jackets.