Top 10 Global Industrial Automation System Suppliers (2025 Guide)

The global industrial automation market is dominated by a group of companies that have spent decades building deep expertise across PLCs, drives, robotics, sensors, control software, and systems integration. Choosing the right automation brand — or understanding which brands are behind the components already running in your facility — is a fundamental part of any upgrade, procurement, or maintenance decision.

This guide profiles the top 10 global industrial automation system suppliers: what they specialize in, where they lead, and what industrial buyers need to know about each. Whether you are specifying a new factory automation system, sourcing replacement components, or evaluating suppliers for a major capital project, this overview covers the landscape.

Industrial Partner stocks components from the world's leading industrial automation brands — including PLCs, drives, sensors, relays, and control hardware. Browse the catalog or contact the team for sourcing support.

Browse industrial automation components at Industrial Partner.

What Defines a Leading Industrial Automation System Supplier?

Not all automation brands compete in the same space. Some are broad-platform players offering integrated hardware, software, and services across virtually every industrial sector. Others lead in specific technologies — robotics, motion control, process instrumentation, or industrial networking. When evaluating industrial automation system suppliers, the key dimensions to consider are:

•       Breadth of product portfolio — PLCs, HMIs, drives, sensors, safety systems, networking

•       Global support and service network — local technical support, training, and spare parts availability

•       Software and integration ecosystem — compatibility with SCADA, MES, ERP, and IIoT platforms

•       Industry-specific expertise — depth of solutions for discrete manufacturing, process industries, or both

•       Component availability and longevity — how well the brand supports legacy systems over time

 

With those criteria in mind, here are the ten global suppliers that consistently define the industrial automation landscape.

1. Siemens — Germany — Global

Siemens is the world's largest industrial automation company by revenue and one of the most comprehensive platform providers in the industry. Its SIMATIC PLC family is among the most widely deployed control systems globally, backed by the TIA Portal (Totally Integrated Automation) software environment that unifies programming, configuration, and diagnostics across hardware product lines.

Siemens leads in process automation through its SIMATIC PCS 7 and PCS neo distributed control systems, and in motion control through SINAMICS drives and SIMOTICS motors. Its digital twin and industrial IoT capabilities, delivered through the MindSphere and Xcelerator platforms, position Siemens at the intersection of traditional automation and Industry 4.0 transformation.

Key Strengths

•       Broadest integrated automation portfolio of any single vendor

•       Strong presence in automotive, chemicals, food and beverage, and utilities

•       TIA Portal reduces engineering time across PLC, HMI, and drive configuration

•       Extensive global service and training network

2. ABB — Switzerland — Global

ABB is a global leader in industrial robotics, power automation, and motion control, operating across more than 100 countries. Its robotics division — one of the world's largest — produces collaborative robots, articulated arms, SCARA robots, and delta robots used in automotive, electronics, food processing, and logistics automation.

Beyond robotics, ABB's automation portfolio covers distributed control systems (ABB Ability System 800xA), low and medium voltage drives, motors, and switchgear. ABB has made significant investments in AI-driven automation and condition monitoring through its ABB Ability digital platform, which connects industrial assets to cloud analytics for predictive maintenance and energy optimization.

Key Strengths

•       World-class industrial robotics and collaborative robot solutions

•       Strong in power generation, oil and gas, pulp and paper, and mining

•       ABB Ability platform for IIoT connectivity and predictive analytics

•       Leading position in energy-efficient drive and motor solutions

3. Rockwell Automation — USA — Global

Rockwell Automation is North America's largest industrial automation company and a dominant global force in programmable logic controllers, industrial software, and smart manufacturing solutions. Its Allen-Bradley PLC and drive product lines are installed in facilities across virtually every manufacturing sector worldwide.

Rockwell's FactoryTalk software suite — covering MES, SCADA, analytics, and asset management — represents one of the most complete manufacturing intelligence platforms available. The company's Logix control architecture and Studio 5000 programming environment have become a de facto standard in North American discrete and hybrid manufacturing.

Key Strengths

•       Allen-Bradley PLCs and ControlLogix/CompactLogix platforms are industry benchmarks

•       FactoryTalk software suite for integrated manufacturing intelligence

•       Dominant market position in North American discrete manufacturing

•       Strong ecosystem of authorized system integrators globally

4. Schneider Electric — France — Global

Schneider Electric is a global leader in energy management and industrial automation, with particular strength in power distribution, building automation, and process control. Its Modicon PLC range — one of the oldest and most widely deployed in the world — continues to be a major platform in factory and process automation.

Schneider's EcoStruxure architecture provides an open, IIoT-enabled framework that spans field devices, edge control, and cloud analytics. The company's EcoStruxure Machine, Plant, and Power platforms are deployed across manufacturing, water and wastewater, oil and gas, and data center markets. Schneider has a strong sustainability positioning, helping industrial customers reduce energy consumption alongside improving automation performance.

Key Strengths

•       Modicon PLCs with decades of installed base and global support

•       EcoStruxure open IIoT architecture for connected operations

•       Leading in energy-automation integration and sustainability solutions

•       Strong in mid-market and emerging market industrial deployments

5. Mitsubishi Electric  —  Japan — Global

Mitsubishi Electric is one of Japan's largest automation conglomerates, with a global reputation for high-reliability PLCs, servo systems, variable frequency drives, and factory automation components. Its MELSEC PLC family is widely deployed in Asia-Pacific manufacturing and has a strong presence in automotive, semiconductor, and electronics production environments.

Mitsubishi Electric's servo and motion control systems are regarded as among the most precise available, making the company a preferred supplier for applications demanding tight positioning accuracy. Its FA (Factory Automation) division integrates PLCs, HMIs, robots (MELFA series), laser processors, and CNC systems into comprehensive manufacturing automation solutions.

Key Strengths

•       High-reliability PLCs and motion control systems

•       MELFA industrial and collaborative robots for precision assembly

•       Strong in semiconductor, electronics, and automotive manufacturing

•       iQ-R and iQ-F PLC platforms with advanced network integration

6. Honeywell Process Solutions  —  USA — Global

Honeywell Process Solutions (HPS) is a global leader in process automation and control technology for continuous and batch process industries. Its Experion PKS (Process Knowledge System) distributed control system is one of the most widely deployed DCS platforms in refining, petrochemicals, power generation, and specialty chemicals.

Honeywell's automation portfolio extends to advanced process control, safety instrumented systems (SIS), field instruments, and industrial cybersecurity. The company has been an early mover in connecting process control systems to cloud analytics through its Honeywell Forge platform, targeting operational efficiency, safety compliance, and maintenance optimization in asset-intensive industries.

Key Strengths

•       Experion PKS DCS platform for process-critical industries

•       Safety instrumented systems and functional safety expertise

•       Strong in refining, LNG, power, and specialty chemicals

•       Honeywell Forge for cloud-connected process analytics

7. Emerson Electric — USA — Global

Emerson's Automation Solutions division is a major global supplier of process control, measurement, and reliability technology. Its DeltaV distributed control system and Ovation control system serve process industries ranging from food and beverage to nuclear power. Emerson's Fisher valve and regulator portfolio and Rosemount measurement instruments are standard specifications in many process plants worldwide.

Emerson has invested heavily in its Plantweb digital ecosystem, which connects field instruments, control systems, and asset management software through IIoT architecture. Its expertise in final control elements — valves, actuators, regulators — combined with its measurement and control portfolio makes Emerson uniquely positioned across the full process automation loop.

Key Strengths

•       DeltaV DCS and Ovation platforms for process industries

•       Rosemount measurement instruments — flow, pressure, temperature, level

•       Fisher control valves and final control elements

•       Plantweb digital ecosystem for IIoT-connected process operations

8. Fanuc — Japan — Global

Fanuc is the world's largest manufacturer of industrial robots and CNC (Computer Numerical Control) systems, with an installed base of over 800,000 robots globally. Its yellow robots are a ubiquitous presence in automotive body shops, electronics assembly, and metal fabrication worldwide. Fanuc's CNC systems power machine tools across virtually every precision manufacturing sector.

Fanuc's automation portfolio is tightly focused — robots, CNC, servo drives, and laser systems — rather than broad platform automation. This specialization translates into exceptional depth of expertise and reliability in its core product areas. The company's FIELD (Fanuc Intelligent Edge Link and Drive) system provides IIoT connectivity for manufacturing data collection and analytics.

Key Strengths

•       Largest installed base of industrial robots in the world

•       Industry-leading CNC systems for machine tool automation

•       Exceptional reliability and long product lifecycle support

•       Strong in automotive, aerospace, and precision metal fabrication

9. Yokogawa Electric — Japan — Global

Yokogawa is a Japanese precision instruments and industrial automation company with particular strength in process control for the oil and gas, petrochemical, power, and pharmaceutical industries. Its CENTUM VP distributed control system is deployed in refineries, chemical plants, and power stations across more than 60 countries.

Yokogawa's measurement portfolio — flow meters, pressure transmitters, analytical instruments — is recognized for accuracy and reliability in demanding process environments. The company's OpreX brand consolidates its digital transformation, control, and measurement offerings under a unified industrial automation architecture aimed at operational excellence and sustainability outcomes.

Key Strengths

•       CENTUM VP DCS with deep process industry references

•       High-accuracy measurement instruments for critical process environments

•       Strong in oil and gas, petrochemicals, pharmaceuticals, and power

•       OpreX digital transformation framework for operational excellence

10. Omron — Japan — Global

Omron is a Japanese electronics and automation company with a strong global reputation in sensing technology, control components, robotics, and motion systems. Its NX/NJ machine automation controllers are widely used in packaging, semiconductor, and food processing automation. Omron's sensing and safety product lines — photoelectric sensors, proximity sensors, safety light curtains, and vision systems — are specified across a wide range of industrial applications.

Omron has positioned itself strongly in collaborative robotics through its TECHMAN robot brand and its i-Automation concept, which integrates intelligent, interactive, and clean automation for next-generation manufacturing. The company's relay, timer, and control component portfolio has significant market share in industrial OEM and panel-building markets globally.

Key Strengths

•       Broad sensing and safety component portfolio for industrial automation

•       NX/NJ machine automation controllers for high-speed applications

•       Collaborative robots and integrated vision systems

•       Strong OEM market presence in relays, timers, and control components

Choosing the Right Automation Supplier for Your Application

No single supplier is the best choice for every application. The right automation brand depends on your industry, your existing installed base, your integration requirements, and the technical support infrastructure available in your region. Here is a quick reference:

•       Broad platform, discrete manufacturing: Siemens (SIMATIC), Rockwell (Allen-Bradley), Schneider (Modicon)

•       Process industries (oil, gas, chemicals, power): Honeywell (Experion), Emerson (DeltaV), Yokogawa (CENTUM VP)

•       Robotics and motion control: ABB, Fanuc, Mitsubishi Electric, Omron

•       Asian manufacturing environments: Mitsubishi Electric, Omron, Fanuc, Yokogawa

•       Energy management + automation: Schneider Electric, Siemens, ABB

•       Sensing and safety components: Omron, Siemens, Schneider, Mitsubishi Electric

 

For facilities already running equipment from one of these suppliers, sourcing replacement parts and compatible components through a knowledgeable industrial parts supplier is critical — especially when dealing with legacy hardware that original distributors no longer stock.

Browse components from leading automation brands at Industrial Partner, including hard-to-find and obsolete parts.

Sourcing Components From Global Automation Brands

Understanding which brands lead the global automation market is one part of the picture. The other part is knowing where to source their components — particularly when you need replacement parts, obsolete hardware, or components for an upgrade project that span multiple brands.

Industrial facilities often run equipment from several of the suppliers listed above simultaneously. A production line might combine a Siemens PLC, ABB drives, Omron sensors, and a Rockwell HMI — each requiring different parts, different spares inventory, and different technical knowledge to maintain.

Industrial Partner stocks components across the automation spectrum — PLCs, drives, sensors, relays, power supplies, and control hardware — from multiple manufacturers, including discontinued and legacy parts that are no longer available through standard distribution channels.

Get a customized automation assessment and discover opportunities to improve efficiency and reduce downtime. Our team helps facilities source the right components from the world's leading automation brands — fast.

Browse the industrial automation catalog or contact the Industrial Partner team for sourcing support and automation project assistance.

Conclusion

The ten companies profiled in this guide — Siemens, ABB, Rockwell Automation, Schneider Electric, Mitsubishi Electric, Honeywell, Emerson, Fanuc, Yokogawa, and Omron — collectively define the global industrial automation system supplier landscape. Together they supply the PLCs, drives, robots, sensors, DCS platforms, and software that power manufacturing and process facilities across every major industry sector worldwide.

For engineers and procurement professionals, understanding each supplier's strengths, installed base, and market focus is essential context for any automation investment decision — whether you are specifying a new system, upgrading an existing one, or sourcing replacement components for legacy equipment.

Whatever brands are running in your facility, Industrial Partner provides the sourcing depth and technical expertise to keep them running — and to support upgrades when the time comes.

Browse industrial automation components and parts or speak to the Industrial Partner team about your automation sourcing needs.