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Blue Sea 120A 187-Series Panel Mount Thermal Circuit Breaker
Blue Sea 120A 187-Series Panel Mount Thermal Circuit Breaker
Waterproof & Ignition Protected with M8 Studs & Manual Reset Switch
Regular price
$167.82
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DESCRIPTION
Heavy-Duty 120A Circuit Protection and Switching for Demanding Environments
The Blue Sea 187-Series 120A Panel Mount Thermal Circuit Breaker delivers reliable overcurrent protection and convenient manual switching in a single, compact device. Engineered for high-amperage DC electrical systems, this breaker eliminates the need to install a separate battery switch and fuse holder. It is an ideal solution for safeguarding heavy-duty circuits in marine vessels, caravans, 4WDs, and off-grid power setups across Australia.
Engineered for Marine Safety and Reliability
Electrical faults in harsh environments require uncompromising safety hardware. This 187-Series breaker features an ignition-protected design, making it completely safe for installation aboard petrol-powered boats and in compartments where flammable fumes may be present. Furthermore, its waterproof construction prevents moisture, salt spray, and dust ingress, significantly reducing the risk of internal corrosion and premature failure compared to standard automotive-grade alternatives.
At the core of its safety architecture is a trip-free mechanism. In the event of a sustained overcurrent or short circuit, the breaker will trip internally even if the external yellow reset lever is physically held in the "ON" position. This vital safety feature prevents catastrophic wire overheating and protects connected equipment from thermal damage.
Key Features and Benefits
- Dual-Function Design: Combines dependable 120A thermal circuit protection with manual on/off switching to save panel space and simplify wiring.
- Trip-Free Operation: Internal mechanism trips during a fault regardless of lever position, mitigating fire risks in high-current DC systems.
- Ignition Protected: Safe for installation in petrol engine compartments and enclosed battery lockers.
- Waterproof Construction: Sealed against water and dust ingress for long-term durability in exposed marine, RV, and 4WD environments.
- Robust M8 Stud Terminals: Heavy-duty 5/16" (M8) terminals support high-torque connections and provide generous clearance for large-gauge wire lugs.
- Clear Visual Indication: High-visibility yellow reset lever clearly displays trip status whether mounted vertically or horizontally.
- Clean Panel Integration: Recessed mounting holes ensure a neat, flush appearance on custom switch panels and dashboards.
Installation Advantages and Application Notes
Terminating heavy-gauge cables is straightforward thanks to the large clearance around the M8 terminal studs, which easily accommodate heavy-duty battery and inverter cable lugs. The robust stud design allows for high-torque tightening, ensuring low-resistance connections that will not vibrate loose on corrugated outback tracks or choppy waters. Whether mounted vertically or horizontally, the high-contrast 120A label and yellow lever allow for rapid circuit identification and status checks.
Application Note: While this unit provides convenient manual switching for isolation and maintenance, it is not recommended for use as a regular on/off switch in circuits where high inrush currents are expected, as repeated high-inrush switching may degrade the contact surfaces over time.
Upgrade Your DC Electrical Protection
Equip your vessel, caravan, or off-grid battery bank with industry-standard circuit protection. Select the Blue Sea 187-Series 120A Panel Mount Thermal Circuit Breaker for safe, compliant, and durable high-current management.
SKU: BS-7046B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Circuit breaker |
| Mounting / form factor | Panel mount |
| SKU: | BS-7046B |
| Model #: | BS-7046B |
| MPN: | BS-7046B |
| Package weight: | 0.216 kg |
| Package length: | 0.11 m |
| Package width: | 0.08 m |
| Package height: | 0.12 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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