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Blue Sea 25A 187-Series Surface Mount Thermal Circuit Breaker
Blue Sea 25A 187-Series Surface Mount Thermal Circuit Breaker
Ignition Protected with Manual On-Off Switching & Trip-Free Design
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DESCRIPTION
Dual-Function Circuit Protection and Switching for Demanding DC Systems
Managing space and wiring complexity in marine, caravan, and off-grid electrical panels is a common challenge. The Blue Sea 187-Series 25A Surface Mount Thermal Circuit Breaker addresses this by combining dependable overcurrent circuit protection and manual on-off switching into a single, rugged unit. By eliminating the need for a separate inline fuse holder and isolation switch, this component streamlines your electrical layout, reduces potential points of failure, and simplifies installation on flat panels or bulkheads.
Engineered specifically for harsh environments, this 25A thermal circuit breaker is built to protect auxiliary circuits, solar controllers, and main distribution feeds in 12V, 24V, and up to 48V DC electrical systems. Unlike standard automotive-grade alternatives that can corrode or fail prematurely in damp conditions, the 187-Series features a weatherproof housing that shields internal components from moisture, salt spray, and dust.
Advanced Safety: Trip-Free and Ignition Protected
When working with high-energy battery banks or volatile environments, safety cannot be compromised. This unit incorporates a trip-free mechanism, ensuring that the internal circuit will trip open during a fault-current event even if the external lever is manually held or obstructed in the ON position. This critical safety feature mitigates the risk of cable overheating and electrical fires caused by sustained short circuits.
Additionally, the housing is fully ignition protected, meaning it will not ignite surrounding flammable gases if a spark occurs internally during switching or tripping. This makes it compliant and safe for installation aboard petrol-powered marine vessels, as well as in vented battery compartments or near LPG storage in caravans and motorhomes.
- Combined Switching and Protection: Integrates a 25A thermal circuit breaker and manual on-off switch to save space and reduce wiring connections.
- Trip-Free Operation: Internal contacts disconnect during an overcurrent fault regardless of whether the lever is held in the ON position.
- Ignition Protected Housing: Safe for installation in compartments aboard petrol-powered boats and enclosed recreational vehicle utility bays.
- High-Visibility Status Lever: The bright yellow reset lever provides an immediate visual confirmation of whether the circuit is active, manually switched off, or tripped.
- Heavy-Duty Threaded Terminals: Robust stud terminals ensure high-torque, low-resistance connections for heavy-gauge lugs, preventing voltage drop and heat build-up.
- Surface Mount Configuration: Pre-drilled mounting holes allow straightforward attachment directly onto electrical panels, bulkheads, or battery boxes.
Important Operational Considerations
While the single-lever operation makes it effortless to isolate equipment for maintenance or storage, it is important to match the component to the correct load profile. The manufacturer advises against using this thermal circuit breaker as a frequent manual switch on circuits where high inrush currents are expected, as repeated high-surge switching can accelerate contact wear. Observe this operational limitation when designing your DC distribution system to ensure long-term reliability.
Upgrade Your Electrical Protection
Equip your marine vessel, 4WD canopy, or off-grid power system with industry-standard circuit protection. Select the Blue Sea 187-Series 25A circuit breaker for a cleaner, safer, and more serviceable electrical installation.
SKU: BS-7135B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Mounting / form factor | Surface mount |
| Component subtype | Circuit breaker |
| Switching function | On-off |
| Ignition protected | Yes |
| SKU: | BS-7135B |
| Model #: | BS-7135B |
| MPN: | BS-7135B |
| Package weight: | 0.36 kg |
| Package length: | 0.09 m |
| Package width: | 0.09 m |
| Package height: | 0.11 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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