Solar Panels
Solar Controllers
Batteries
Inverters
Mains Chargers
DC-DC Chargers
Cables/Accessories
Power Converters
Monitoring
Kits
By Application
By Brand
Blue Sea 70A 285-Series Panel Mount Thermal Circuit Breaker
Blue Sea 70A 285-Series Panel Mount Thermal Circuit Breaker
48V DC Max | SAE J1171 Ignition Protected | Trip-Free Manual Reset
Regular price
$95.75
Availability:
Special Order
View all products from Blue Sea
Guaranteed Safe and Secure Checkout
0
DESCRIPTION
Reliable 70A DC Overcurrent Protection and Switching for Marine and Off-Grid Systems
The Blue Sea 285-Series 70A Panel Mount Thermal Circuit Breaker delivers dependable circuit protection and manual switching in a single, compact unit. Engineered specifically for demanding marine, RV, caravan, and 4WD electrical installations, this heavy-duty breaker eliminates the need for separate inline fuse holders and isolation switches. Supporting DC electrical systems up to a maximum of 48V DC, it is equally suited for standard 12V and 24V battery banks as well as higher-voltage off-grid setups.
Whether you are protecting auxiliary battery systems, solar charge controllers, or distribution panels, the 285-Series provides an easy-to-manage alternative to replaceable fuses. When an overload occurs, the thermal mechanism responds accurately to protect your wiring harness and connected appliances from thermal damage.
Key Features and Benefits
- Dual Functionality: Combines 70A continuous overcurrent protection with manual on/off switching to streamline your electrical layout.
- SAE J1171 Ignition Protected: Certified safe for installation aboard petrol-powered boats and inside enclosed engine compartments or battery boxes.
- Trip-Free Design: Internal mechanism ensures the breaker cannot be manually held closed during an active fault or overcurrent condition, prioritising system safety.
- Clear Status Indication: Features a high-visibility yellow reset lever that drops down to clearly show when a circuit has tripped, alongside a recessed red push-to-trip button for manual circuit disconnection.
- Weather-Resistant Construction: Built to withstand harsh marine environments, moisture, and vibration where lower-grade breakers might corrode or fail prematurely.
- Multi-Voltage Compatibility: Rated for systems up to 48V DC, making it versatile for 12V automotive setups, 24V commercial vehicles, and 48V off-grid power architectures.
Engineered for Safety in Harsh Environments
In marine and mobile environments, electrical components are constantly exposed to moisture, salt spray, and vibration. Standard circuit breakers often suffer from nuisance tripping or internal corrosion under these conditions. The Blue Sea 285-Series features weather-resistant housing and robust internal contacts designed to maintain continuity and accurate trip thresholds over long service lives.
Compliance with SAE J1171 ignition protection standards means this unit will not ignite surrounding flammable gases if a spark occurs internally during a trip event. This makes it an essential safety component when mounting near fuel tanks, bilge areas, or poorly ventilated lead-acid battery enclosures.
Intuitive Operation and System Integration
Troubleshooting electrical faults in dimly lit lockers or engine bays is simplified by the tactile yellow reset lever. When the red test button is pressed or an overcurrent event triggers the thermal element, the lever swings open to provide immediate visual confirmation of an open circuit. Once the fault is cleared, flipping the lever back restores power instantly without searching for spare fuses.
Designed for flush panel mounting, the unit integrates cleanly into custom switchboards or main distribution hubs using its pre-drilled mounting holes. Please note an important operational exclusion: do not use this thermal circuit breaker as a frequent manual switch where high inrush currents are expected (such as direct switching of heavy motor loads or large inverter capacitor banks without pre-charge), as repeated high-inrush switching can degrade the contacts over time.
Upgrade Your Electrical Protection
Ensure your vessel, caravan, or off-grid power system is safeguarded against electrical faults with industry-standard components. Select the Blue Sea 285-Series 70A Panel Mount Thermal Circuit Breaker for safe, resettable protection across your 12V, 24V, or 48V DC distribution setup.
SKU: BS-7085B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Circuit breaker |
| Mounting / form factor | Panel mount |
| Standards / compliance | SAE J1171 |
| Ignition protected | Yes |
| SKU: | BS-7085B |
| Model #: | BS-7085B |
| MPN: | BS-7085B |
| Package weight: | 0.216 kg |
| Package length: | 0.11 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
Loading product documents…