Blue Sea Systems Battery Switch 2pos 350A - BSS-9003E
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You have 30 days to request a return. All sale items are final sale.
Blue Sea Systems e-Series Battery Switch BSS-9003E is a 2-position (On/Off) battery disconnect designed to control a single battery’s DC circuit with a 350A continuous rating—ideal for clean, simple master shutoff in marine electrical systems.
Key Features
- 2-position (On/Off) e-Series marine battery switch for single-circuit battery control
- 350A continuous DC rating for reliable battery disconnect
- e-Series design for dependable DC circuit switching
- Manufacturer Part Number: BSS-9003E
Product Compatibility
- Marine battery management systems requiring a simple single-battery on/off disconnect
- Single-battery setups where a master DC shutoff is needed
- Boat electrical systems that use a battery switch for isolation during maintenance or storage
Product Details
- Brand: Blue Sea Systems
- Product Type: Battery switch
- Switch Positions: 2-position (On/Off)
- Rating: 350A continuous
- Manufacturer Part Number: BSS-9003E
- SKU/Variant: BSS-9003E
Parts Desk Insights
Best Use Case: Choose this switch when you want a straightforward master disconnect for one battery circuit—turning electrical loads off when the boat is not in use or during maintenance.
Common Issues: If your switch is difficult to turn or the electrical circuit behaves inconsistently, double-check terminal connections and routing to ensure proper, secure contact at the battery switch terminals. Also confirm the switch hole pattern and mounting location match your installation plan before final tightening.
Related Products & Accessories
- Blue Sea Systems e-Series 4-Position 350A Battery Switch (BSS-9001E) - Alternative e-Series battery switch option with more positions.
- Blue Sea Systems 4-Position 300A Battery Switch (BSS-6007) - Alternative multi-position option for different battery management needs.
- Blue Sea Systems M-Series 2-Position Lock 30A (BSS-6004) - 2-position lock style switch for lower amperage applications.
- Blue Sea Systems ML-Series Remote Battery Switch (BSS-7700) - Remote battery switch option when you need location flexibility.
- Blue Sea Systems e-Series On-Off with AFD (BSS-9004E) - On/Off configuration with AFD capability for alternator protection.
- Blue Sea Systems e-Series 4-Position Selector with AFD (BSS-9002E) - Selector configuration with AFD for alternator protection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.