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Blue Sea 60A 187-Series Surface Mount Thermal Circuit Breaker
Blue Sea 60A 187-Series Surface Mount Thermal Circuit Breaker
Waterproof, Ignition Protected, 48V DC Max with 5/16" (M8) Terminals
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$167.82
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DESCRIPTION
Integrated Circuit Protection and Manual Switching for Harsh Environments
The Blue Sea Systems 187-Series 60A Surface Mount Thermal Circuit Breaker combines heavy-duty circuit protection and manual switching into a single, robust unit. Engineered for demanding marine, automotive, and off-grid electrical systems, this device streamlines wiring configurations by eliminating the need for separate inline fuses and isolation switches. Supporting systems up to 48V DC, it is well-suited for 12V, 24V, and 48V battery banks, auxiliary distribution panels, and high-draw DC appliances.
Safety-First Design and Ignition Protection
When working around marine engine compartments, fuel tanks, or battery enclosures, safety is paramount. This thermal circuit breaker meets strict SAE J1171 external ignition protection requirements, making it safe for installation aboard petrol-powered boats and in enclosed vehicle spaces where flammable gases may accumulate. Unlike standard unsealed switches that risk sparking, this unit contains internal electrical arcs safely within its waterproof housing.
Additionally, the internal mechanism features a trip-free design. In the event of an overcurrent fault or short circuit, the breaker will trip and cannot be manually held in the ON position until the fault is cleared. This vital safety feature prevents wiring damage, melted insulation, and potential electrical fires caused by operator error or forced overrides.
Engineered for Heavy-Duty Cabling and Durability
Inferior circuit breakers often suffer from undersized studs that strip under torque or fail to accommodate thick cable lugs, leading to high resistance and dangerous heat build-up. The 187-Series resolves this by incorporating robust 5/16" (Approx. M8) stainless steel terminals. These heavy-duty studs provide ample clearance and high-torque capability for large-gauge wire lugs, ensuring low-resistance connections that withstand severe vibration in 4WD, caravan, and marine applications.
The rugged thermoset polyester case is completely waterproof and features recessed mounting holes for a clean, professional surface installation. A large, high-visibility yellow reset lever provides an immediate visual indication of the circuit status, allowing you to quickly identify a tripped circuit or manually isolate power during system maintenance.
Key Features and Benefits
- Dual Functionality: Combines reliable 60A thermal overcurrent protection with convenient manual ON/OFF switching in one compact footprint.
- SAE J1171 Ignition Protected: Safe for installation in petrol engine rooms and battery compartments, reducing the risk of vapour ignition.
- Trip-Free Mechanism: Ensures the circuit cannot be forced closed during an active fault condition, protecting expensive downstream electronics and cabling.
- Heavy-Duty Terminals: Equipped with 5/16" (Approx. M8) stainless steel studs to securely accept heavy-gauge ring terminals without crowding.
- Waterproof Construction: Sealed housing resists moisture ingress, salt spray, and dust in exposed marine and off-road environments.
- Wide Voltage Compatibility: Rated for up to 48V DC maximum, offering versatility across 12V, 24V, and 48V DC electrical architectures.
Application Considerations and Limitations
This 60A thermal breaker is ideal for protecting main feed lines, windlasses, bow thrusters, DC-DC chargers, and solar charge controller outputs. While it excels as a manual isolation switch and circuit protector, please note that it is not intended for use as a frequent switch where high inrush currents are expected, such as directly switching large inverters without pre-charge circuits.
Upgrade Your Electrical Protection
Ensure your vessel, caravan, or off-grid power system is protected against overloads and short circuits. Integrate the Blue Sea 187-Series 60A Surface Mount Thermal Circuit Breaker into your DC distribution setup for dependable, marine-grade circuit management.
SKU: BS-7140B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Thermal circuit breaker |
| Mounting / form factor | Surface mount |
| Ignition protected | Yes |
| Terminal size | 5/16 (M8) |
| SKU: | BS-7140B |
| Model #: | BS-7140B |
| MPN: | BS-7140B |
| Package weight: | 0.3 kg |
| Package length: | 0.09 m |
| Package width: | 0.08 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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