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Blue Sea 25A 187-Series Panel Mount Thermal Circuit Breaker
Blue Sea 25A 187-Series Panel Mount Thermal Circuit Breaker
Up to 48V DC | Ignition Protected & Weatherproof | 5/16" (M8) Studs
Regular price
$167.82
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DESCRIPTION
Combined Circuit Protection and Manual Switching for Harsh Environments
The Blue Sea 187-Series 25A Panel Mount Thermal Circuit Breaker delivers reliable overcurrent protection and manual switching in a single, robust unit. Engineered for demanding electrical systems up to 48V DC, this component simplifies wiring architectures by eliminating the need for a separate inline fuse holder and isolation switch. Whether you are outfitting a marine vessel, an off-grid 4WD canopy, or a custom caravan electrical board, this breaker ensures critical circuits remain safe from overload and short-circuit events.
Engineered for Safety and Trip-Free Reliability
When working with high-energy DC battery banks, compromising on circuit protection introduces severe electrical fire risks. Unlike standard switches or inferior breakers that can fail under load, the Blue Sea 187-Series features a dedicated trip-free mechanism. This internal design ensures the breaker cannot be manually held in the ON position while a fault-current condition exists, protecting your cabling and downstream appliances from thermal runaway.
Additionally, the housing is fully ignition protected and weatherproof. This makes it compliant and safe for installation aboard petrol-powered boats and near battery enclosures where explosive gases may accumulate, significantly reducing operational hazards in enclosed spaces.
Practical Panel Installation and Heavy-Duty Connectivity
Designed for clean integration into custom switchboards and dashboards, this unit utilises waterproof recessed mounting holes for a flush, professional finish. The high-visibility yellow lever provides immediate visual confirmation of the circuit status and can be oriented vertically or horizontally to suit your layout.
To prevent voltage drop and thermal buildup at the connection point, the breaker is equipped with generous clearance around its 5/16" (Approx. M8) terminal studs. This design easily accommodates heavy-gauge wire lugs, ensuring secure mechanical and electrical connections for high-draw accessories.
- Dual-Function Design: Combines 25A thermal circuit protection and manual ON/OFF switching into one compact device.
- Trip-Free Safety Mechanism: Internally disconnects and cannot be forced ON during an active electrical fault.
- Ignition Protected & Weatherproof: Safe for installation in marine bilges, petrol boat engine bays, and exposed off-grid environments.
- Heavy-Duty Terminals: Large 5/16" (Approx. M8) studs provide ample clearance for heavy-gauge lugs in 12V, 24V, and up to 48V DC systems.
- Clear Visual Status: High-visibility yellow reset lever clearly indicates tripped status and allows easy manual isolation.
- Flush Panel Mounting: Recessed mounting holes ensure a neat, low-profile installation on dashboards and power distribution panels.
Application Guidelines and System Integration
This 25A thermal breaker is ideal for protecting main branch circuits, anchor winches, dc-to-dc chargers, and auxiliary lighting arrays across 12V, 24V, and 48V DC setups. For optimal longevity and contact preservation, please note a specific operational exclusion: do not use this breaker as a manual switch where high inrush currents are expected. Switching high inrush loads regularly can prematurely wear the internal thermal contacts.
Upgrade Your DC Circuit Protection
Secure your marine, RV, or off-grid power distribution system with industry-standard protection. Add the Blue Sea 187-Series 25A Panel Mount Thermal Circuit Breaker to your setup today for dependable, consolidated switching and fault isolation.
SKU: BS-7035B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Thermal circuit breaker |
| Mounting / form factor | Panel mount |
| Ignition protected | Yes |
| Terminal size | 5/16 M8 |
| SKU: | BS-7035B |
| Model #: | BS-7035B |
| MPN: | BS-7035B |
| Package weight: | 0.3 kg |
| Package length: | 0.1 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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