Blue Sea 40A A-Series Single Pole Toggle Circuit Breaker - White
Blue Sea 40A A-Series Single Pole Toggle Circuit Breaker - White
40A Magnetic Hydraulic - Trip-Free Design - White Toggle Switch

DESCRIPTION
Reliable Magnetic Hydraulic Circuit Protection and Switching for Marine and Off-Grid Panels
The Blue Sea A Series Circuit Breaker, Double Pole is an industry-standard solution engineered to combine dependable switching and precise overcurrent protection into a single, compact device. Designed specifically for demanding marine, RV, and off-grid electrical panels, this 40A double pole circuit breaker is widely selected by electrical installers and system builders for AC main circuit protection and high-demand distribution applications.
By integrating both functions, it eliminates the need for separate switches and fuse holders, streamlining your switchboard layout and reducing potential points of failure in critical wiring systems. Please note that while the actuator is marked for 40A, the supplied technical specifications do not explicitly state the operational voltage ratings, so always verify the marked ratings on the breaker housing against your specific system requirements prior to installation.
Why Choose a Magnetic Hydraulic Design?
Unlike standard thermal breakers that rely on heat to trigger a response, a magnetic hydraulic circuit breaker operates using a current-sensing coil and a mechanically damped hydraulic core. This advanced internal mechanism ensures that the trip point remains largely unaffected by ambient temperature fluctuations.
In Australian conditions, where engine bays, boat cabins, and caravan electrical lockers regularly experience extreme heat, standard thermal units can suffer from nuisance tripping at currents well below their rated capacity. Conversely, in cold environments, they may take too long to trip. The magnetic hydraulic architecture solves this problem by responding strictly to actual current draw, providing consistent, reliable overcurrent protection regardless of the surrounding climate.
Dual-Pole Safety and Trip-Free Fault Response
In marine AC shore power systems, inverter outputs, and isolated power grids, safety regulations and best practices often require breaking both the active (hot) and neutral conductors simultaneously. This double pole toggle breaker achieves this via an internally linked mechanism. If an overload occurs on either line, both poles trip immediately, ensuring complete isolation of downstream appliances and significantly reducing the risk of shock hazards caused by reverse polarity or fault currents on the neutral line.
Furthermore, the unit incorporates a specialised trip-free design. This vital safety feature ensures that the internal contacts cannot be manually held in the ON position while a fault current condition exists. Even if the white toggle switch is physically restrained, the internal mechanism will release and interrupt the circuit, protecting your cabling and equipment from severe thermal damage.
Key Features and Benefits
- 40A Double-Pole Configuration: Simultaneously breaks two poles (such as AC active and neutral) for comprehensive circuit isolation.
- Combined Switching and Protection: Acts as both a heavy-duty master switch and an overcurrent protector, saving valuable panel space.
- Temperature-Stable Operation: Magnetic hydraulic mechanism resists nuisance tripping in hot engine rooms or enclosed battery canopies.
- Trip-Free Safety Mechanism: Cannot be forced to remain closed during an active electrical fault, mitigating fire and equipment risks.
- Panel-Ready Construction: Features an ergonomic white toggle actuator with high-visibility markings and threaded brass mounting inserts for secure switchboard integration.
- Global Marine & Industrial Compliance: Meets strict ABYC standards, is UL 1077 recognised, TUV certified, CE marked for Europe, and CSA certified for Canada.
Engineered for Harsh Environments
Every component of the Blue Sea Systems A-Series range is built to withstand the rigours of mobile and marine environments. The durable housing houses robust internal contacts, while the front face features threaded brass inserts for secure panel mounting that resists vibration and mechanical stress. With clear OFF and amperage markings on the white toggle switch, system status can be identified at a glance in dimly lit cabins or utility bays.
Upgrade Your Electrical Panel Protection
Ensure your AC main distribution or heavy-duty off-grid circuits are protected by proven, standards-compliant hardware. Add the Blue Sea A Series Double Pole 40A Circuit Breaker to your build today for safe, integrated switching and fault protection.
SKU: BS-7226B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Circuit breaker |
| Pole configuration | Double pole |
| Standards / compliance | Meets ABYC standards; UL 1077 recognized; TUV certified; CE marked for Europe; CSA certified for Canada |
| SKU: | BS-7226B |
| Model #: | BS-7226B |
| MPN: | BS-7226B |
| Package weight: | 0.36 kg |
| Package length: | 0.14 m |
| Package width: | 0.1 m |
| Package height: | 0.09 m |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

