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Blue Sea 90A 187-Series Panel Mount Thermal Circuit Breaker
Blue Sea 90A 187-Series Panel Mount Thermal Circuit Breaker
Ignition Protected, Trip-Free Design with 5/16" (M8) Terminal Studs
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$167.82
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DESCRIPTION
Integrated 90A DC Switching and Thermal Circuit Protection
The Blue Sea 187-Series 90A Panel Mount Thermal Circuit Breaker delivers reliable overcurrent protection and manual switching in a single, heavy-duty unit. Engineered for demanding marine, RV, and off-grid DC electrical systems, this component eliminates the need to wire a separate switch and fuse holder. By consolidating two critical functions into one compact footprint, it streamlines panel layouts, reduces potential failure points, and simplifies complex wiring installations.
Fail-Safe Trip-Free Mechanism
Electrical safety in high-current DC systems requires uncompromising reliability. This 187-Series breaker features an advanced trip-free mechanism, meaning the internal contacts cannot be manually held in the closed (ON) position during an active fault condition. Unlike lower-grade alternatives that may allow an operator to force a circuit live during a short or overload, the Blue Sea design automatically overrides manual input until the fault is cleared and the thermal element cools. This vital safety feature significantly reduces the risk of overheated wiring, damaged electronics, and electrical fires.
Engineered for Harsh Marine and Automotive Environments
Designed specifically to withstand moisture, vibration, and volatile environments, this circuit breaker is fully ignition protected. It is safe for installation aboard petrol-powered boats, within engine compartments, and near battery banks where flammable gases may accumulate. The waterproof mounting holes and robust housing protect internal components from moisture ingress, ensuring dependable operation in coastal and off-road applications.
To handle substantial 90A continuous loads without voltage drop or excessive heat generation, the unit is equipped with heavy-duty 5/16" (Approx. M8) terminal studs. These large terminals easily accommodate heavy-gauge cable lugs and support high-torque connections, preventing loose wiring caused by vessel or vehicle vibration.
Key Features and Benefits
- Dual Functionality: Combines manual ON/OFF circuit switching with precision 90A thermal overcurrent protection.
- Trip-Free Safety Design: Cannot be held in the ON position while a fault current is present, protecting downstream cabling and equipment.
- Ignition Protected: Safe for installation in compartments on petrol-powered vessels and around vented battery enclosures.
- Heavy-Duty Terminations: Robust 5/16" (Approx. M8) studs accept large ring terminals and allow for secure, high-torque connections.
- Clean Panel Integration: Recessed mounting holes provide a neat, professional finish on switchboards and distribution panels.
- Clear Visual Status: The high-visibility yellow reset lever can be mounted vertically or horizontally and clearly indicates when the breaker has tripped.
- Weather-Resistant Build: Waterproof mounting holes help maintain enclosure integrity in damp marine or mobile environments.
Application Notes and Limitations
While the 187-Series is built for heavy-duty circuit protection and manual isolation, do not use this breaker as a regular switch where high inrush currents are expected. Repeatedly switching loads with massive startup surges under load can prematurely wear the internal contacts. It is ideally suited for main DC feed protection, windlasses, bow thrusters, high-output inverters, and auxiliary battery systems in caravans, 4WDs, and marine vessels.
Upgrade Your DC Electrical Protection
Ensure your vessel or off-grid power system is protected against dangerous overloads and short circuits. Integrate the Blue Sea 187-Series 90A Panel Mount Thermal Circuit Breaker into your distribution panel for professional-grade safety and reliable manual circuit control.
SKU: BS-7043B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Thermal circuit breaker |
| Mounting / form factor | Panel mount |
| Ignition protected | Yes |
| Terminal size | 5/16 M8 |
| SKU: | BS-7043B |
| Model #: | BS-7043B |
| MPN: | BS-7043B |
| Package weight: | 0.36 kg |
| Package length: | 0.11 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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