Circuit Breaker Aa1 40 Amp Black
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
A-Series single-pole marine circuit breaker that combines switching with circuit protection in one device. Designed for reliable branch-circuit protection in DC and AC systems with a magnetic-hydraulic, trip-free mechanism.
Key Features
- Single pole A-Series magnetic-hydraulic circuit breaker with trip-free action
- Combines switching and circuit protection into a single device
- Rated for 65 Volts DC and 250 Volts AC
- Includes mounting screws
Intended Use
- Marine and off-road vehicle DC electrical systems
- AC auxiliary branch-circuit protection (where voltage requirements match)
- Replacement or upgrade for panel-mounted circuit breakers in Blue Sea Systems electrical panels
Product Details
- Single pole circuit breaker
- Type/operation: magnetic-hydraulic, trip-free
- Current rating: 40 Amp
- Color/handle style: black (A-Series black toggle)
- Electrical ratings: 65 Volts DC; 250 Volts AC
- Mounting: includes mounting screws
- SKU: 661-7224
Parts Desk Insights
Best Use Case: Use for panel-mounted branch-circuit protection where you want one device to provide both on/off switching and overcurrent trip protection.
Common Issues: If a breaker trips unexpectedly, confirm the load current and inspect for wiring shorts/overload at the circuit end. Also verify the breaker is seated correctly in the panel cutout and that any related terminals/gaskets and fastening hardware are properly mated per the system’s wiring diagram.
Related Products & Accessories
- Fuses - Pairing circuit protection with the correct fuse/holder components for additional protection strategies.
- Electrical & Accessories - Explore related electrical components used with marine power distribution.
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.