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Blue Sea 187-Series Surface Mount Thermal Circuit Breaker
Blue Sea 187-Series Surface Mount Thermal Circuit Breaker
Up to 48V DC | Ignition Protected | 5/16" (M8) Studs | Trip-Free
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$167.82
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DESCRIPTION
Heavy-Duty DC Overcurrent Protection and Manual Switching
Managing high-current electrical pathways in marine, automotive, and off-grid installations requires dependable overcurrent protection. The Blue Sea 187 Series Surface-Mount Thermal Circuit Breaker integrates precise thermal circuit protection and manual single-lever switching into one compact, robust housing. By combining these two functions, it eliminates the need to wire separate fuse holders and battery switches, simplifying your layout and reducing potential failure points across your system.
Rated for DC electrical systems up to 48V maximum, this unit is highly adaptable for 12V, 24V, and 48V battery setups. Whether you are securing a primary battery bank in a touring 4WD, protecting heavy-duty loads in a caravan, or managing onboard marine power, the 187 Series provides reliable circuit interruption when overloads or short circuits occur.
Engineered for Demanding Marine and Off-Grid Environments
Inferior circuit breakers often suffer from voltage drop, corroded terminals, or mechanical failure when exposed to harsh environments. The Blue Sea 187 Series solves these common issues through marine-grade engineering and robust materials. It is fully ignition protected, meaning it is engineered not to ignite surrounding flammable gases if a spark occurs internally. This makes it safe for installation in the engine compartments of petrol-powered boats and vehicles, reducing the risk of catastrophic electrical fires.
Safety is further enhanced by a mechanical trip-free design. In the event of an active electrical fault, the internal mechanism cannot be manually held in the ON position. This critical safety feature protects your wiring harness and connected appliances from thermal damage while you troubleshoot the fault.
Key Features and Benefits
- Dual-Function Design: Combines automatic thermal overcurrent protection and manual ON/OFF circuit switching in a single unit.
- High-Visibility Status Lever: The bright yellow reset lever provides clear visual confirmation of tripped status and allows for straightforward manual operation.
- Heavy-Duty Terminal Studs: Equipped with 5/16" (Approx. M8) stainless steel terminal studs that support high-torque connections and provide ample clearance for heavy-gauge wire lugs.
- Trip-Free Safety Mechanism: Prevents the circuit from being forced closed during an ongoing overcurrent fault, safeguarding downstream cabling and equipment.
- Ignition Protected: Safe for installation aboard petrol-powered vessels and near fuel sources.
- Simple Surface Mounting: Pre-drilled mounting holes allow for secure, straightforward installation onto flat electrical panels, bulkheads, or battery box enclosures.
- Wide Voltage Compatibility: Rated for DC systems up to 48V maximum, suiting standard 12V automotive systems through to 24V and 48V off-grid power banks.
Practical Applications and Operational Considerations
This surface-mount breaker is well suited for protecting main DC feed lines, auxiliary battery charging circuits, inverters, and other high-draw DC distribution branches. Its generous stud spacing accommodates back-to-back lug installation without interfering with the enclosure housing.
Important Use Limitation: While this device functions effectively as a manual disconnect switch for maintenance or storage, do not use this breaker as a regular switch where high inrush currents are expected, as repeated switching under heavy surge loads can prematurely wear the internal contacts.
Upgrade Your Circuit Protection
Ensure your high-current DC wiring is properly safeguarded against overloads and short circuits. Select the Blue Sea 187 Series Surface-Mount Thermal Circuit Breaker for your marine vessel, caravan, or off-grid power system to achieve safe, compliant, and streamlined electrical distribution.
SKU: BS-7136B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Thermal circuit breaker |
| Mounting / form factor | Surface mount |
| Ignition protected | Yes |
| Terminal size | 5/16 M8 |
| SKU: | BS-7136B |
| Model #: | BS-7136B |
| MPN: | BS-7136B |
| Package weight: | 0.24 kg |
| Package length: | 0.11 m |
| Package width: | 0.08 m |
| Package height: | 0.08 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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