Blue Sea 50A A-Series Single Pole Toggle Circuit Breaker - White
Blue Sea 50A A-Series Single Pole Toggle Circuit Breaker - White
Magnetic Hydraulic Panel Switch & Protection - Trip-Free Design

DESCRIPTION
Integrated Magnetic Hydraulic Switching and Circuit Protection
Dependable 50A Circuit Breaker for Marine, RV, and Off-Grid Electrical Panels
The Blue Sea A-Series 50A Single-Pole Toggle Circuit Breaker delivers industry-standard electrical protection and manual switching in a single, compact device. Designed specifically for integration into Blue Sea Systems electrical distribution panels and custom switchboards, this component eliminates the need to wire separate switches and fuse holders. By consolidating your power distribution setup, it reduces potential failure points, simplifies wiring harnesses, and saves valuable dashboard or bulkhead space in tight installations.
Engineered for demanding environments, this 50A circuit breaker is ideal for marine vessels, caravans, 4WD canopies, and off-grid power systems where reliable overcurrent protection is critical for high-draw appliances and sub-circuits.
Why Choose a Magnetic Hydraulic Circuit Breaker?
Unlike standard thermal circuit breakers that rely on heat-sensitive bimetallic strips, the Blue Sea A-Series utilises a precision magnetic hydraulic mechanism. Standard thermal breakers can suffer from nuisance tripping when installed in hot engine bays, enclosed electrical cabinets, or harsh Australian climates because high ambient temperatures affect their trip threshold. Conversely, a magnetic hydraulic breaker responds solely to actual current flow through a magnetic coil and a fluid-damped core.
This advanced design ensures that the 50A trip curve remains stable and predictable across a wide range of operating temperatures. Furthermore, the internal fluid damping provides a controlled time delay, allowing harmless temporary inrush currents (such as starting a pump or inverter charge cycle) to pass without tripping, while reacting instantly to severe short circuits.
Enhanced Safety with Trip-Free Operation
Safety is paramount when managing high-amperage DC or AC electrical circuits. The Blue Sea BS-7230B incorporates a mechanical trip-free design. In the event of a dangerous overload or short-circuit fault, the internal mechanism will disconnect the circuit even if the white toggle actuator is physically held or jammed in the ON position. This critical safety feature mitigates the risk of melted wiring insulation, damaged electronics, and electrical fires by ensuring the fault must be cleared before power can be restored.
- Dual-Function Design: Combines manual ON/OFF circuit switching with reliable 50A overcurrent protection in one unit.
- Magnetic Hydraulic Mechanism: Provides consistent, temperature-stable trip performance immune to ambient heat fluctuations.
- Trip-Free Safety: Internal contacts cannot be held closed manually during an active fault-current condition.
- Clear Visual Status: High-visibility white toggle actuator features a clearly marked 50A rating and distinct OFF position indicator.
- Robust Panel Mounting: Equipped with durable threaded brass inserts for secure, vibration-resistant front panel installation.
Built for Demanding Mobile and Marine Applications
Inferior circuit protection devices often suffer from loose terminals, brittle plastics, and inconsistent trip tolerances under constant vibration. The Blue Sea A-Series is constructed with a heavy-duty housing and robust brass mounting inserts to withstand the continuous shock and vibration experienced in marine hulls and corrugated off-road tracks. The front actuator face clearly displays the 50A current rating for rapid circuit identification during troubleshooting, while the side-mounted technical label details regulatory compliance and electrical ratings for straightforward inspection.
Ideal Applications
- Main or branch circuit protection in marine AC/DC electrical panels
- High-draw 12V and 24V distribution boards in caravans, motorhomes, and camper trailers
- Protecting windlasses, pumps, lighting arrays, and auxiliary battery circuits
- Custom off-grid solar control cabinets and mobile service vehicles
Upgrade Your Electrical Panel Protection
Ensure your electrical distribution system is protected against overloads and short circuits without the hassle of replacing blown fuses. Add the Blue Sea A-Series 50A Single-Pole Toggle Circuit Breaker to your panel setup today for professional-grade switching and dependable circuit safety.
SKU: BS-7230B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Circuit breaker |
| SKU: | BS-7230B |
| Model #: | BS-7230B |
| MPN: | BS-7230B |
| Package weight: | 0.3 kg |
| Package length: | 0.1 m |
| Package width: | 0.08 m |
| Package height: | 0.11 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.

