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Blue Sea 150A 187-Series Surface Mount Thermal Circuit Breaker
Blue Sea 150A 187-Series Surface Mount Thermal Circuit Breaker
Waterproof & Ignition Protected - M10 Studs & Trip-Free Reset Lever
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$180.18
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DESCRIPTION
Integrated Switching and Heavy-Duty Circuit Protection
The Blue Sea 187-Series 150A Surface Mount Thermal Circuit Breaker delivers reliable overcurrent protection and manual switching in a single, robust unit. Engineered for demanding marine, automotive, and off-grid DC electrical systems, this high-amperage breaker eliminates the need to wire a separate fuse block and battery isolation switch. By consolidating two critical functions into one compact footprint, it streamlines your installation, reduces potential failure points in your wiring harness, and saves valuable mounting space inside battery boxes or electrical canopies.
Unlike standard unsealed breakers that are prone to corrosion, nuisance tripping, and premature mechanical failure, the 187-Series is purpose-built for harsh Australian environments. Its waterproof construction protects the internal thermal mechanism from moisture ingress, salt spray, and dust, ensuring dependable performance whether installed in the hull of a boat, the canopy of a 4WD touring rig, or a caravan power distribution board.
Safety-First Engineering and Ignition Protection
When managing high-current 12V, 24V, or 48V DC loads, safety and compliance are paramount. This thermal circuit breaker features a vital trip-free design, meaning the internal mechanism cannot be manually held in the closed (ON) position while an active fault current condition exists. This prevents severe cable overheating, melted insulation, and potential electrical fires caused by operators attempting to force a circuit live during a short circuit or severe overload.
Furthermore, the unit is certified as ignition protected. It will not emit an external spark when tripping or switching, making it entirely safe for installation in the engine compartments of petrol-powered boats, marine vessels, or enclosed spaces where flammable LPG or fuel vapours may accumulate.
Key Features and Benefits
- Combined Switching and Protection: High-visibility yellow manual reset lever clearly indicates trip status and allows for immediate manual circuit disconnection during maintenance or storage.
- Heavy-Duty M10 Terminal Studs: Equipped with robust stainless steel M10 terminal studs designed to accept heavy-gauge ring terminals and support high-torque cable connections without stripping or corroding.
- Trip-Free Safety Mechanism: Ensures the breaker trips and remains disconnected during a fault condition, even if the control lever is physically held in the ON position.
- Waterproof and Ignition Protected: Sealed against water ingress and certified safe for use aboard petrol-powered marine vessels and hazardous environments.
- Clean Surface-Mount Profile: Features integrated, recessed mounting holes that provide a secure attachment to flat panels while maintaining a neat, professional appearance.
Application Considerations and Best Practices
The 150A rating makes this breaker ideal for protecting main DC feeder lines, heavy-duty windlasses, hydraulic pumps, and high-output dual battery charging systems. The generous clearance around the M10 studs easily accommodates heavy-duty battery cable lugs for low-resistance connections.
Important Application Note: As stated by the manufacturer, this thermal circuit breaker is not intended for use as a regular manual on/off switch where high inrush currents are expected (such as directly switching large power inverters with uncharged internal capacitors). Frequent switching under heavy inrush loads can cause premature wear on the internal contacts. For high-inrush applications, use this breaker strictly for overcurrent protection and Emergency isolation, while utilizing a dedicated heavy-duty battery switch or contactor for routine switching.
Upgrade Your DC Circuit Protection
Secure your high-amperage electrical circuits against overloads and short circuits with marine-grade hardware. Add the Blue Sea 187-Series 150A Thermal Circuit Breaker to your system today for compliant, long-lasting power management across your marine, RV, or off-grid setup.
SKU: BS-7148B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Thermal circuit breaker |
| Mounting / form factor | Surface mount |
| Ignition Protected | Yes |
| SKU: | BS-7148B |
| Model #: | BS-7148B |
| MPN: | BS-7148B |
| Package weight: | 0.48 kg |
| Package length: | 0.11 m |
| Package width: | 0.09 m |
| Package height: | 0.1 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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