Blue Sea 30A Medium Duty Push Button Reset-Only Circuit Breaker
Blue Sea 30A Medium Duty Push Button Reset-Only Circuit Breaker
Weatherproof, Ignition Protected & Trip-Free with Captive Washers

DESCRIPTION
Compact, Weatherproof 30A Circuit Protection for Demanding Electrical Systems
The Blue Sea Medium Duty 30A Push Button Reset-Only Circuit Breaker delivers dependable overcurrent protection for marine, automotive, and off-grid electrical installations. Part of a specialised medium-duty series designed for loads ranging from 15A to 60A, this specific 30A model is engineered for applications where circuit switching is handled by a separate switch or is not required at all. Whether you are safeguarding main power feeds, branch circuits, or vital 24-hour continuous circuits like bilge pumps and battery chargers, this unit provides robust thermal circuit protection when your system needs it most.
Engineered for Safety and Trip-Free Reliability
Electrical faults in mobile and marine environments require immediate, uncompromised intervention to prevent wire insulation damage and thermal hazards. This 30A circuit breaker features a specialised trip-free design, meaning the internal mechanism cannot be manually held in the 'ON' position during an active fault-current condition. Even if the red push-button actuator is physically held down, the breaker will trip and isolate the circuit until the overload is resolved. Once the fault is cleared, the straightforward push-to-reset operation restores power quickly without the need to source and replace blown fuses.
Built for Harsh Marine and Off-Grid Environments
Standard residential or low-grade automotive breakers often fail prematurely when exposed to moisture, vibration, and corrosive coastal air. The Blue Sea BS-2140B is purpose-built with a weatherproof and ignition-protected housing, making it safe for installation in engine rooms, damp lockers, and exposed marine dash panels, Including petrol-powered boat compartments. Its compact footprint and integrated metal mounting faceplate allow for high-density circuit protection configurations, saving valuable space in tight electrical cabinets, 4WD dual-battery canopies, and caravan power distribution boards.
Streamlined, Frustration-Free Installation
Working inside cramped electrical enclosures or boat hulls often leads to dropped hardware and loose connections over time. To solve this common installation challenge, Blue Sea Systems has equipped the side-mounted terminal studs with captive star lock washers. These integrated washers meet strict anti-rotation requirements to keep your heavy-duty cable lugs securely fastened under high vibration, while completely eliminating the frustration of handling tiny, easily lost parts during fit-out.
Key Features & Benefits
- Dedicated 30A Overcurrent Protection: Ideal for main, branch, or 24-hour continuous circuits where switching is managed elsewhere.
- Weatherproof & Ignition Protected: Sealed construction resists moisture ingress and is safe for installation in marine engine compartments.
- Trip-Free Internal Mechanism: Ensures the circuit cannot be forced to remain closed during a dangerous overcurrent or short-circuit event.
- Captive Star Lock Washers: Prevents terminal rotation under vibration and stops small hardware from dropping into bilges or behind panels during installation.
- High-Density Compact Profile: Robust metal mounting faceplate supports neat, space-saving multi-breaker arrays.
- Push-to-Reset Actuator: Simple manual reset button eliminates the need to carry spare fuses on board.
Typical Applications
- Marine Vessels: Protecting 24-hour bilge pump circuits, stereo memory feeds, windlasses, or sub-panel branch feeds.
- Caravans & Motorhomes: Securing DC-DC charger inputs, solar controller outputs, and auxiliary appliance distribution hubs.
- 4WD & Commercial Vehicles: Safeguarding winches, air compressors, and canopy power setups against dead shorts and overloads.
Upgrade Your System's Circuit Protection
Ensure your critical wiring and electrical appliances are protected against overloads and short circuits. Add the Blue Sea 30A Push Button Reset-Only Circuit Breaker to your setup today for professional-grade, weatherproof reliability across all your marine and off-grid applications.
SKU: BS-2140B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Medium duty circuit breaker |
| Load protection | Provides circuit protection for 15 to 60A loads when switching is provided elsewhere or not required |
| Weather protection | Weatherproof |
| Applications | Main, branch or 24-hour circuit protection |
| Design | Compact design enables high-density circuit protection configurations |
| Actuator | Push-to-reset operation |
| Trip design | Trip-free design cannot be held ON during a fault-current condition |
| Washers | Captive star lock washers meet anti-rotation requirements and eliminate handling of small, easily dropped parts |
| SKU: | BS-2140B |
| Model #: | BS-2140B |
| MPN: | BS-2140B |
| Package weight: | 0.192 kg |
| Package length: | 0.1 m |
| Package width: | 0.08 m |
| Package height: | 0.06 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.

