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Blue Sea 40A 187-Series Surface Mount Thermal Circuit Breaker
Blue Sea 40A 187-Series Surface Mount Thermal Circuit Breaker
Ignition Protected, Weatherproof Housing & Manual Reset Lever
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$167.82
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DESCRIPTION
Heavy-Duty 40A Circuit Protection and Switching for Harsh Environments
The Blue Sea 187-Series 40A Surface Mount Thermal Circuit Breaker delivers dependable overcurrent protection and manual switching in a single, compact unit. Engineered specifically for demanding marine, RV, caravan, and off-grid DC electrical systems, this breaker safeguards your wiring and high-draw appliances from damaging short circuits and thermal overloads. By combining switching and circuit protection into one device, it eliminates the need for separate inline fuse holders and isolation switches, streamlining your electrical board layout and reducing potential points of failure.
Engineered for Marine Safety and Durability
When installing electrical components in enclosed engine bays, battery lockers, or marine compartments, safety is paramount. This 40A thermal circuit breaker is fully ignition protected, making it safe for installation aboard petrol-powered boats where stray sparks from standard, unsealed electrical components could ignite fuel vapours. Furthermore, its robust, weatherproof housing protects the internal thermal trip mechanism against moisture, salt spray, dust, and vibration, ensuring long-term operational integrity across harsh Australian conditions.
Key Features and Benefits
- Dual-Function Design: Combines reliable 40A thermal overcurrent protection with manual on/off switching capabilities in one robust unit.
- High-Visibility Reset Lever: Features a bright yellow actuator lever that provides clear visual indication of the circuit status (tripped or closed) and allows for quick manual resets or circuit isolation.
- Ignition Protected: Safe for installation in marine engine compartments and spaces housing petrol fuel systems.
- Weatherproof Construction: Sealed housing resists moisture and dust ingress, making it ideal for exposed marine decks, 4WD canopies, and camper trailers.
- Heavy-Duty Stud Terminals: Large threaded studs accommodate heavy-gauge ring terminals, ensuring low-resistance, high-current connections that resist loosening under vibration.
- Simple Surface Mounting: Integrated mounting holes allow for straightforward installation onto flat panels, bulkheads, or battery distribution boards without requiring complex panel cutouts.
Superior Reliability Over Standard Fuse Holders
Unlike single-use blade or MIDI fuses that require spare parts to restore power after an overload fault, this resettable surface mount circuit breaker allows you to quickly troubleshoot the issue and restore power with the flip of a lever. Compared to inferior, unsealed breakers that are prone to premature tripping due to ambient heat, voltage drop, or terminal corrosion, the Blue Sea Systems 187-Series maintains strict calibration and firm contact pressure. The trip-free design also ensures the internal contacts cannot be manually held closed during an active fault condition, significantly reducing the risk of cable overheating or electrical fires.
Ideal Applications
This 40A breaker is exceptionally versatile and suited to a wide range of 12V, 24V, and 48V DC electrical installations:
- Main circuit protection for auxiliary battery systems in 4WDs, caravans, and motorhomes
- Protecting high-current marine accessories such as bilge pumps, winches, and bow thrusters
- Isolating DC-DC chargers, solar charge controllers, and inverter feed lines
- Heavy-duty automotive, commercial vehicle, and off-grid power distribution boards
Upgrade Your Electrical Protection
Ensure your mobile or marine power system is protected against unexpected electrical faults. Add the Blue Sea 187-Series 40A Surface Mount Thermal Circuit Breaker to your installation for dependable, resettable circuit protection.
SKU: BS-7138B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Circuit breaker |
| Mounting / form factor | Surface mount |
| Ignition protected | Yes |
| SKU: | BS-7138B |
| Model #: | BS-7138B |
| MPN: | BS-7138B |
| Package weight: | 0.3 kg |
| Package length: | 0.1 m |
| Package width: | 0.09 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.
DOCUMENTS
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