The AllSpark Copper Busbar (25mm × 3mm) is a heavy-duty power distribution bar rated at 300 amps continuous, built from solid high-conductivity copper for minimal voltage drop and maximum current-carrying capacity. At 25mm wide and 3mm thick, it delivers an optimal cross-sectional area of 75mm² — engineered to handle the high-current demands of dual-battery systems, lithium battery banks, inverters, and DC-DC chargers without overheating. The bare copper construction ensures the lowest possible contact resistance, while pre-drilled bolt holes provide secure, rattle-free terminations suited to the vibration and corrugation of Australian outback tracks.

Designed for caravanners, 4WD tourers, and RV builders who demand a clean, professional electrical installation, this busbar is the backbone of any serious 12V or 24V off-road power setup. Whether you're consolidating multiple battery terminals in a caravan's power management bay, distributing load across a motorhome's auxiliary systems, or building a dual-battery tray in a Land Cruiser or Patrol, the AllSpark BB-25X3 provides a reliable, code-compliant connection point for all positive or negative cable runs. Its compact footprint fits easily into battery boxes, cable trays, and custom steel enclosures — making it a favourite among experienced auto electricians and self-builders fitting out for extended off-grid travel across Australia.

Key Features

• Solid high-conductivity copper construction rated at 300 amps continuous current
• 25mm × 3mm profile with 75mm² cross-sectional area for minimal voltage drop
• Pre-drilled bolt holes for secure, rattle-free terminations on corrugated roads
• Compatible with 12V and 24V systems — suits dual-battery, lithium, and inverter setups
• Compact design fits battery boxes, cable trays, and custom RV power bays