What are the specifications and models of copper busbar junction boxes
Copper busbar junction boxes are available in multiple models with current ratings from 250A to 6600A, IP protection from IP20 to IP67, and configurations compliant with IEC 61439 standards.
Key Specifications
Current Ratings and Conductors
- Low-power systems: 25A to 63A, suitable for lighting and small energy distribution, with 4 conductors and IP55 protection (LBplus) .
- Medium-power systems: 63A to 1000A, available in copper or aluminum conductors, with 3–5 conductor options and IP55 standard protection .
- High-power systems: 1100A to 6600A (ABB PMAX H), epoxy resin-coated copper conductors, multiple bar configurations including Neutral, Double Neutral, Earth, and Half Earth . Protection Ratings
- Standard IP20 for low-power tap-off boxes .
- IP55 as standard for medium and high-power systems; IP65 and IP67 available on request for industrial applications .
- Resin-encased busbars can reach IP68 for extreme environments . Tap-Off Points and Junction Box Types
- Plastic and metal junction boxes available for various current ranges .
- Up to five tap-off points per three-meter length in ABB PMAX H systems, with mechanical/electrical interlocks and “earth first, break last” safety feature .
- Straight, curved, elbow, and expansion elements, along with suspension and fixing supports, are available for flexible installation . Standards Compliance
- All copper busbar junction boxes comply with IEC 61439-1 (general requirements) and IEC 61439-6 (busbar trunking systems) .
- Verification includes protection against electric shock, integrity of protective circuits, and thermal performance . Additional Features
- Optional tin or silver coating on copper conductors for enhanced conductivity and corrosion resistance .
- Customizable lengths up to 12 feet with optional brackets, insulators, and Plexiglass covers for protection (Burndy) .
- Designed for industrial, commercial, and tertiary sector applications, including data centers and service buildings .
Popular Models and Ranges
| Manufacturer | Model/Range | Current Rating | Protection | Conductor Type | Tap-Off Points |
|---|---|---|---|---|---|
| BTicino | LBplus | 25A–63A | IP55 | Copper/Al | Standard low-power tap-off |
| BTicino | LBplus DATA | 63A–160A | IP20 | Copper/Al | 4/5 wire connection |
| BTicino | Medium/High Power | 160A–1000A | IP55/IP65 | Copper/Al | Plastic/metal junction boxes |
| ABB | PMAX H | 1100A–6600A | IP55–IP67 | Copper, epoxy-coated | Up to 5 per 3m length |
| Burndy | Custom Copper Bus Bars | Up to 12 ft | Optional | Copper | Customizable |
These copper busbar junction boxes provide flexible, safe, and standard-compliant solutions for power distribution, grounding, and industrial electrical installations, with options for customization to meet specific project requirements.
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