Blue Sea 20A A-Series Single Pole Restricted Off Flat Rocker Circuit Breaker
Blue Sea 20A A-Series Single Pole Restricted Off Flat Rocker Circuit Breaker
Flush ON Actuator & Trip-Free Protection for 24-Hour Circuits

DESCRIPTION
Reliable Protection for 24-Hour and Critical Electrical Circuits
In marine, automotive, and off-grid electrical systems, certain circuits must remain continuously energised to protect equipment and maintain safety. The Blue Sea A-Series 20A Restricted-Off Flat Rocker Circuit Breaker is specifically engineered for these vital 24-hour applications. Combining circuit switching and overcurrent protection into a single compact device, this single-pole breaker eliminates the need for separate fuses and switches while safeguarding essential loads against accidental disconnection.
Engineered to Prevent Inadvertent Switching
Standard toggle or protruding rocker switches in high-traffic areas like helm stations, caravan control panels, or service canopies are vulnerable to accidental bumps. A stray hand or shifting gear can easily knock a standard switch into the OFF position, shutting down critical equipment without the operator noticing. This A-Series flat rocker circuit breaker solves this problem with a specialised flush-mount actuator design. When engaged in the ON position, the black rocker sits completely flush with the surrounding bezel, preventing unintended switching. To manually disconnect the circuit, deliberate finger pressure is required to recess the actuator into the restricted OFF position.
Uncompromised Safety with Trip-Free Architecture
When managing 12V, 24V, or AC distribution panels, reliable fault interruption is non-negotiable. This 20A circuit breaker features an internal trip-free mechanism, an essential safety standard for professional electrical installations. If a dangerous overload or short-circuit fault occurs, the breaker will trip open immediately and cannot be manually held in the ON position to force current through. This vital feature significantly reduces the risk of overheated wiring, melted insulation, and potential electrical fires compared to inferior circuit protection devices.
Key Features and Benefits
- Flush ON Actuator: Sits level with the frame during normal operation to prevent accidental shutdown of continuous-duty circuits.
- Visual Status Indication: Features a high-visibility coloured actuator surface that is only exposed when the breaker is in the OFF or tripped position for instant fault recognition.
- Trip-Free Safety Design: Ensures the internal contacts open during an overcurrent fault, even if the actuator is physically held in the ON position.
- Flexible Panel Orientation: Printed with international ON/OFF symbols that support clean, readable installation in either vertical or horizontal panel layouts.
- Robust Panel Mounting: Incorporates integrated brass threaded inserts for secure, vibration-resistant mounting in mobile and marine switchboards.
Ideal Applications for Restricted-Off Breakers
Because the restricted-off actuator requires intentional action to disconnect power, it is the preferred choice for circuits that must stay active unattended. It is widely specified by marine electricians and RV builders for:
- Marine Bilge Pump Circuits: Prevents accidental deactivation of automatic float switches and bilge alarms while a vessel is moored or underway.
- 24-Hour Caravan and RV Loads: Protects continuous power feeds to fridge/freezers, diesel heaters, and battery management systems.
- Security and Monitoring Systems: Maintains uninterrupted power to GPS trackers, vessel monitoring systems, and security cameras.
- Memory Keep-Alive Feeds: Ideal for stereo memory, navigation electronics, and communication equipment that require constant background power.
Upgrade Your Electrical Panel Protection
Ensure your essential 24-hour circuits remain protected and uninterrupted. Add the Blue Sea A-Series 20A Restricted-Off Flat Rocker Circuit Breaker to your custom switchboard or distribution panel build today for professional-grade circuit management.
SKU: BS-7429B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Circuit breaker |
| Actuator type | Rocker |
| Operation mode | ON-OFF |
| SKU: | BS-7429B |
| Model #: | BS-7429B |
| MPN: | BS-7429B |
| Package weight: | 0.216 kg |
| Package length: | 0.08 m |
| Package width: | 0.08 m |
| Package height: | 0.12 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.

