Heavy-Duty 300A Power Distribution for 12V–48V Systems
Create a cleaner, safer and more organised high-current electrical installation with this 300A 4-Post Power Distribution Busbar Pair.
Supplied with separate red positive and black negative busbars, this set provides a central connection point for distributing battery power and consolidating negative return cables. It is ideal for dual-battery systems, lithium battery installations, inverters, DC chargers, solar equipment and other high-current accessories.
Each busbar is fitted with four M10 (3/8-inch) terminal studs, providing secure mounting points for heavy-duty cable lugs. The enclosed modular housing helps protect the connections while keeping the finished installation neat and professional.
Key Features
- 300A Maximum Continuous Rating: Designed for high-current DC power distribution applications.
- 12V–48V DC Compatibility: Suitable for common automotive, marine, caravan and off-grid electrical systems.
- Positive and Negative Pair: Includes one red positive busbar and one black negative busbar.
- Four M10 Studs Per Busbar: Large 3/8-inch connection points accommodate heavy-duty ring terminals and battery cables.
- Copper Conductive Components: Provides dependable current transfer throughout the connected circuits.
- Nickel-Plated Terminal Hardware: Helps improve corrosion resistance and durability.
- Reinforced Nylon Housing: Glass-fibre-reinforced construction provides mechanical strength and electrical insulation.
- Protective Enclosure: The covered modular design helps shield live terminals from accidental contact, debris and physical damage.
- Flexible Cable Entry: Removable side panels allow cables to enter from multiple directions.
- Surface-Mount Installation: Integrated mounting points provide a stable and secure installation.
Perfect for High-Current Installations
Instead of stacking multiple cable lugs directly onto a battery terminal, the busbars provide dedicated central connection points for your electrical system. This helps simplify maintenance, improve cable organisation and create a more professional installation.
Common applications include:
- 4WD and touring electrical systems
- Dual-battery and lithium battery systems
- Caravans, camper trailers and motorhomes
- Marine and boat electrical installations
- Inverters and high-current DC equipment
- DC-to-DC battery chargers
- Solar and off-grid power systems
- Trucks, machinery and commercial vehicles
Specifications
Product Specifications
| Product Type | Positive and negative power distribution busbar pair |
|---|---|
| Maximum Continuous Current | 300A |
| Operating Voltage | 12V–48V DC |
| Maximum Operating Voltage | 48V DC |
| Connection Points | 4 studs per busbar |
| Terminal Size | M10 (3/8-inch) |
| Conductor Material | Copper |
| Stud Finish | Nickel-plated |
| Housing Material | Glass-fibre-reinforced nylon |
| Approximate Dimensions | 137 × 68.5 × 44.5mm per busbar |
| Colour Identification | Red positive and black negative |
| Mounting Type | Surface mount |
