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Blue Sea 100A 187-Series Surface Mount Thermal Circuit Breaker
Blue Sea 100A 187-Series Surface Mount Thermal Circuit Breaker
Ignition Protected, Trip-Free Design & 5/16" (M8) Studs
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$167.82
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DESCRIPTION
Heavy-Duty 100A DC Overcurrent Protection and Switching
Managing high-current DC electrical systems requires dependable overcurrent protection that will not fail under demanding conditions. The Blue Sea 187-Series 100A Surface Mount Thermal Circuit Breaker combines heavy-duty circuit protection and manual switching into a single, compact unit. Designed for marine vessels, 4WDs, caravans, and off-grid power setups, this component eliminates the need to wire a separate fuse block and battery isolation switch. By consolidating these functions, you reduce potential failure points, minimise voltage drop across unnecessary connections, and save valuable installation space.
Engineered for Harsh Marine and Automotive Environments
Unlike standard commercial circuit breakers that can corrode or cause hazards in enclosed spaces, the 187-Series is purpose-built for extreme environments. It features an ignition-protected design, making it completely safe for installation aboard petrol-powered boats, inside engine bays, or within enclosed battery compartments where flammable gases might accumulate. The robust, weatherproof housing seals out moisture, salt spray, and dust, ensuring reliable long-term operation in coastal and off-road conditions.
Key Features and Technical Benefits
- Combined Switching and Protection: Acts as both a 100A overcurrent fuse and a convenient manual disconnect switch for isolating battery banks or high-draw loads during maintenance.
- Trip-Free Mechanism: Internal safety engineering ensures the circuit breaker will trip during an electrical fault even if the reset lever is physically held in the ON position, preventing catastrophic wire damage or fire risks.
- Heavy-Gauge Terminal Clearance: Equipped with robust 5/16" (Approx. M8) stainless steel terminal studs that provide ample clearance for heavy-gauge wire lugs and support high-torque connections to prevent resistive heating.
- Clear Visual Status Indication: The high-visibility yellow reset lever provides immediate visual confirmation of the circuit status and can be oriented for either vertical or horizontal reading.
- Simple Surface Mounting: Pre-drilled mounting holes allow for straightforward installation onto flat panels, bulkheads, or distribution boards.
Reducing Electrical System Risks
Inferior circuit breakers often suffer from nuisance tripping, high internal resistance, or welded contacts during severe short circuits. The Blue Sea 187-Series mitigates these risks through precision thermal bi-metal engineering. When an overload occurs, the breaker responds predictably to protect your cabling and downstream electronics. Once the fault is cleared, power can be restored immediately via the reset lever without needing to source or carry spare replacement fuses.
Ideal Applications and Important Exclusions
This 100A thermal circuit breaker is well-suited for protecting main DC feed lines, high-output alternators, windlasses, bow thrusters, and DC-to-DC chargers in 12V, 24V, and 48V systems. However, please note a specific operational exclusion: do not use this breaker as a regular manual switch where high inrush currents are expected (such as repeatedly switching large inverters with uncharged internal capacitors under load), as frequent high-inrush switching can degrade the internal contacts over time.
Secure Your High-Current DC Circuits
Upgrade your electrical distribution system with marine-grade reliability. Add the Blue Sea 187-Series 100A Surface Mount Thermal Circuit Breaker to your setup today to ensure safe, compliant, and easily manageable power distribution for your boat, caravan, or off-grid vehicle.
SKU: BS-7144B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Thermal circuit breaker |
| Mounting / form factor | Surface mount |
| Ignition protected | Yes |
| Terminal size | 5/16 M8 |
| SKU: | BS-7144B |
| Model #: | BS-7144B |
| MPN: | BS-7144B |
| Package weight: | 0.3 kg |
| Package length: | 0.1 m |
| Package width: | 0.08 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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