Blue Sea 150A DualBus Plus 5-Terminal Busbar, 5/16 Stud Size, with Clear Polycarbonate Cover
Blue Sea 150A DualBus Plus 5-Terminal Busbar, 5/16 Stud Size, with Clear Polycarbonate Cover
Combined Positive & Negative Bus - ABYC Compliant - Approx. M8 Studs

DESCRIPTION
Integrated Positive and Negative DC Power Distribution for Marine and Off-Grid Systems
Managing complex electrical wiring in confined spaces requires hardware that maximises efficiency without compromising safety. The Blue Sea 150A DualBus Plus integrates both positive and negative distribution buses onto a single, compact block. Designed for demanding 12V, 24V, and 48V DC electrical systems, this dual busbar eliminates the need to mount two separate distribution blocks, saving valuable installation space in marine vessels, caravans, 4WDs, and off-grid solar enclosures.
By consolidating your primary power and ground connections into one robust footprint, the DualBus Plus simplifies wire routing and keeps your electrical cabinet organised. With a continuous rating of 150A, it easily handles substantial power loads while maintaining a clean, professional layout that makes system diagnostics and future upgrades straightforward.
Engineered for Safety and Compliance
Electrical safety is critical in high-vibration environments like boats and off-road vehicles. Inferior terminal blocks often lack proper shielding, leaving live connections exposed to accidental contact with tools or loose gear. The DualBus Plus resolves this hazard with a durable, clear polycarbonate cover that satisfies strict Coast Guard and ABYC insulation requirements.
The transparent housing allows you to perform quick visual inspections of your terminals and cable lugs to check for corrosion or heat discolouration without exposing live circuits. When maintenance or expansion is required, the integrated yellow snap-on latches allow for tool-less removal of the protective cover, providing immediate access to the busbar terminals.
Key Features and Benefits
- Dual Bus Configuration: Combines positive and negative distribution pathways into one single block to halve your mounting footprint and simplify wiring runs.
- Heavy-Duty Stud Terminals: Equipped with 5/16" (Approx. M8) stainless steel studs per bus, engineered for secure, high-current cable connections and corrosion resistance.
- Auxiliary Screw Terminals: Includes five stainless steel screw terminals per bus for tidy distribution of smaller branch circuits and negative returns.
- ABYC Compliant Insulation: Clear polycarbonate cover protects against accidental short circuits while permitting clear visual inspection of all connections.
- Tool-Less Access: Secure snap-on cover with high-visibility latches allows rapid servicing without needing a screwdriver in tight quarters.
Why Upgrade to a DualBus Plus Architecture?
Standard single-polarity busbars force installers to run parallel mounting tracks and manage wider cable looms. In compact battery boxes, canopy setups, or marine helm stations, space is always at a premium. Using a unified block reduces the number of fasteners required for mounting and aligns your positive feed and negative return cables along the same path.
Furthermore, the use of corrosion-resistant stainless steel hardware for both the 5/16" (Approx. M8) studs and auxiliary screws ensures reliable clamping force. This reduces the risk of high-resistance joints, voltage drop, and thermal build-up that often plague standard brass or unplated steel terminals in humid or coastal Australian conditions.
Ideal Applications
- Marine Electrical Panels: Consolidating helm electronics, bilge pumps, and cabin lighting while meeting strict marine safety standards.
- Caravan and RV Setups: Organising 12V and 24V house battery distribution for fridges, inverters, and DC-DC chargers in tight under-bed compartments.
- 4WD Dual Battery Systems: Creating a neat, vibration-resistant hub for canopy accessories, compressors, and work lights.
- Off-Grid Solar Cabinets: Terminating multiple charge controllers, monitoring shunts, and DC loads cleanly inside an enclosure.
Streamline Your DC Wiring Layout
Upgrade your electrical distribution system with hardware built for longevity and compliance. Add the Blue Sea 150A DualBus Plus to your setup today for a safer, cleaner, and more serviceable power installation.
SKU: BS-2723B
SPECIFICATIONS
| Specification | Value |
|---|---|
| Product type | Busbar |
| Maximum current | 150A |
| Terminal count | 5 |
| Stud size | 5/16 |
| Bus configuration | Combines negative and positive buses on one block |
| Cover | Clear polycarbonate; snaps on |
| Cover requirements | Meets Coast Guard and ABYC insulation requirements |
| SKU: | BS-2723B |
| Model #: | BS-2723B |
| MPN: | BS-2723B |
| Package weight: | 0.24 kg |
| Package length: | 0.17 m |
| Package width: | 0.09 m |
| Package height: | 0.05 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.

