ABB vs Siemens
ABB and Siemens are both placed on 10 of the same AI data center parts in this catalog, spanning layers 6, 7. ABB appears on 16 parts in total and Siemens on 15.
At a glance
| ABB | Siemens | |
|---|---|---|
| Ownership | public | public |
| Headquarters | Zurich, Switzerland | Munich, Germany |
| Primary listing | ABBN.SW | SIE.DE |
| Market cap | 122.5B CHF | 196.3B EUR |
| Parts placed | 16 | 15 |
| Layers covered | 4 | 3 |
| Units / subsidiaries | 0 | 2 |
| Seen in machines | 0 | 0 |
Market caps are a nightly snapshot in each listing's own currency, never converted.
What the shared parts are
- Fans and motors — Fans and their drive motors that move air through dry coolers, adiabatic units, and cooling towers to reject heat to the atmosphere.
- Building management, controls, environmental sensors — The building management system, PLCs, and environmental sensors that monitor and automatically control chillers, air handlers, pumps, and dampers across the facility.
- Relays — Protection relays that detect electrical faults on HV circuits and trigger the associated breakers to isolate them.
- MV switchgear, E-houses, power skids — Medium-voltage switchgear packaged into pre-fabricated electrical houses (E-houses) or skids that distribute power across a campus and can be factory-built and shipped as modules.
- 6 more in the table below.
The 10 parts both make
| Part | ABB | Siemens |
|---|---|---|
| Fans and motors Layer 6 — Facility cooling & HVAC | manufacturer disclosed | manufacturer disclosed |
| Building management, controls, environmental sensors Layer 6 — Facility cooling & HVAC | manufacturer inferred | manufacturer disclosed |
| Relays Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
| MV switchgear, E-houses, power skids Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
| MV/LV transformers Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
| LV switchgear, switchboards, panelboards Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
| Busway / busbar trunking Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
| Circuit protection, fuses, surge, grounding Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
| Metering, power quality, monitoring Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
| 800 V DC architecture & solid-state transformers Layer 7 — Electrical: power distribution (grid to rack) | manufacturer inferred | manufacturer inferred |
Only ABB
Only Siemens
- DCIM, digital twins, capacity planning layer 11
- Valves and actuators layer 6
- PLCs layer 6
- Detection layer 6
- Suppression layer 6
Questions
- Do ABB and Siemens compete?
- In this catalog they are both placed on 10 of the same parts, across 2 layers: Fans and motors, Building management, controls, environmental sensors, Relays, MV switchgear, E-houses, power skids and 6 more. Sharing a part does not mean selling the same product to the same buyer, so read each row's product note.
- Which has more placements, ABB or Siemens?
- ABB has 16 placements and Siemens has 15. Placement counts reflect how thoroughly each company has been catalogued as well as its real breadth, so they are not a ranking.
Generated from the catalog's part-to-company table. Each placement is tagged disclosed, reported or inferred; see sources & method. Neither company is endorsed or ranked here.