Who makes busway / busbar trunking for AI data centers
Rigid, modular busbar systems that carry power along a data hall's overhead or perimeter path with tap-off points, used as an alternative to running individual cables to each row.
Busway carries current from LV switchgear or PDUs (7.05, 7.07) along a data hall, typically overhead, with tap-off boxes at intervals that feed individual racks or rows — functionally similar to what LV cable and tray (7.09) do, but as a rigid, pre-engineered, higher-ampacity alternative. Its appeal in a data center is flexibility: adding or moving a tap-off is simpler than pulling new cable, which matters as rack power draw and layouts change between generations of IT equipment. As racks draw more current, busway systems are being specified at higher ampacity ratings and with more tap-off density than in a conventional commercial building, and some designs are extending busway architecture down into the rack itself as a power-distribution backbone. Because busway is a metal-intensive, factory-fabricated product shipped in fixed lengths and site-jointed, manufacturing capacity and copper or aluminum input costs both matter to how quickly it can be delivered at scale. For investors, watch order backlogs at busway manufacturers, the pace at which they are qualifying higher-ampacity product lines for AI-density racks, and the extent to which busway is displacing cable and tray as the default in-hall distribution method rather than remaining a premium option.
AI delta: Higher rack power draw favors busway over cable runs because busway supports higher-ampacity tap-offs and is easier to reconfigure as rack layouts and power densities change between generations.
Companies on this part (10)
| Company | Role | Ownership | Ticker | Price | 1d | Confidence | Note |
|---|---|---|---|---|---|---|---|
| ABB | manufacturer | public | ABBN.SW | 67.78 CHF | -1.2% | inferred | |
| Chint | manufacturer | public | 601877.SS | 24.75 CNY | +2.7% | inferred | |
| Delta Electronics | manufacturer | public | 2308.TW | 1560 TWD | -3.4% | inferred | |
| Eaton | manufacturer | public | ETN | 366 USD | -1.7% | inferred | |
| LS Electric | manufacturer | public | 010120.KS | 156900 KRW | -2.2% | inferred | |
| Schneider Electric | manufacturer | public | SU.PA | 231 EUR | -1.4% | inferred | |
| Siemens | manufacturer | public | SIE.DE | 257 EUR | +0.4% | inferred | |
| Starline · unit of Legrand | manufacturer | subsidiary | LR.PA* | disclosed | · source | ||
| Vertiv | manufacturer | public | VRT | 194 USD | -0.2% | inferred | |
| Graziadio | manufacturer | private | inferred |
Who competes here
The same table read the other way: every company above competes for busway / busbar trunking sockets. Confidence tags matter — an inferred placement is a lead, not a confirmed rivalry.
Nearby parts
- Previous in layer: LV switchgear, switchboards, panelboards
- Next in layer: Floor PDUs, RPPs, static transfer switches, ATS
- Layer: Layer 7 — Electrical: power distribution (grid to rack)
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- Tata Power eyes 2.8GW of generation, transmission, and distribution for Indian data center sector — Data Center Dynamics, 2026-10-21Tata Power plans to secure significant generation, transmission, and distribution capacity for the burgeoning Indian data center industry.
- Hitachi Energy teams up with Ansaldo to develop integrated power solutions for data center sector and grid — Data Center Dynamics, 2026-10-21Hitachi Energy and Ansaldo have formed a collaboration to develop integrated power solutions specifically for the data center sector and the broader electrical grid.
- LS Power COO sees sweeping power sector investing needs: gas, renewables, transmission and more — Utility Dive, 2026-10-20LS Power's COO stated that current demand growth is substantial and that the supply side of the power infrastructure, including gas, renewables, and transmission, requires significant time to meet market needs.
- Grid equipment manufacturer ABB sees US orders rise 82% — Utility Dive, 2026-10-20ABB reported that utility investments are increasing for electrical grid refurbishment and build-out to ensure power availability and efficiency.
- LEO satellite boom strains supply chain amid AI data-center demand — DigiTimes, 2026-10-15The simultaneous expansion of LEO satellite constellations and AI data centers is creating supply chain strain and competition for power-related equipment and grid capacity.
- DCD Studio: Manufacturing power systems with Michael Beagan, TES Power — Data Center Dynamics, 2026-10-14The discussion covers the importance of switchgear, power distribution, and modular power solutions for accelerating data center construction.
- Google data center strategic sourcing exec heads to OpenAI — Data Center Dynamics, 2026-10-13Google's strategic sourcing executive is joining OpenAI to focus on high-speed interconnects and rack power infrastructure.
- DCD Talk: Critical power architectures for AI data centers with Mehdi Rajehi, ABB — Data Center Dynamics, 2026-10-13ABB's Mehdi Rajehi discusses how next-generation power architectures are being designed to support the scaling requirements of AI data centers.
- Sponsored: VEIR raises $110 million Series C to accelerate commercialization of superconducting power delivery technology for AI data centers — Data Center Dynamics, 2026-10-13Veir raised $110 million in Series C funding to scale the manufacturing and deployment of superconducting power delivery systems designed for high-density AI data centers.
- Number of data center fires and power failures has doubled since 2024 — Data Center Dynamics, 2026-10-12Data from the Energy Incident Register shows a significant increase in fire and power failure incidents related to power infrastructure since 2024.
Questions about busway / busbar trunking
- What is busway / busbar trunking?
- Rigid, modular busbar systems that carry power along a data hall's overhead or perimeter path with tap-off points, used as an alternative to running individual cables to each row.
- Which companies make busway / busbar trunking for AI data centers?
- This catalog lists 10 companies on Busway / busbar trunking, 9 of them with listed equity: ABB, Chint, Delta Electronics, Eaton, LS Electric, Schneider Electric, Siemens, Starline, Vertiv, Graziadio.
- How does AI change demand for busway / busbar trunking?
- Higher rack power draw favors busway over cable runs because busway supports higher-ampacity tap-offs and is easier to reconfigure as rack layouts and power densities change between generations.
- How reliable are these busway / busbar trunking supplier placements?
- The 10 placements on this part break down as 1 disclosed, 9 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.
Sources: placements without a source URL come from the taxonomy seed and are tagged accordingly. How this data is built.· Markdown · JSON