Industrial Automation Power & Control Infrastructure
Nkokhi Group supplies and sources Industrial Automation Power & Control Infrastructure for manufacturing plants, mining operations, water and wastewater facilities, utilities, process industries, OEM machinery, material handling systems and critical infrastructure across South Africa.
Our solutions cover the complete electrical and automation chain – from incoming power distribution and motor control through to PLC control, HMI, SCADA, instrumentation, industrial networking, drives and backup power.
We support both new installations and existing/legacy systems, including sourcing of difficult-to-find automation modules and replacement components. Modern industrial automation architectures commonly combine PLC/PAC controllers, HMI, SCADA, drives, motor-control equipment and industrial communications.
Industrial Automation Power & Control Infrastructure Solutions
Nkokhi Group can source and supply individual components, complete assemblies or project-specific automation equipment.
1. PLC & PAC Control Systems
Programmable Logic Controllers form the core of many industrial control systems, receiving signals from field devices, processing control logic and commanding equipment.
PLC / PAC products include:
- Siemens SIMATIC S7
- Siemens S7-1200
- Siemens S7-1500
- Siemens S7-300
- Siemens S7-400
- Siemens ET 200
- Schneider Modicon M221
- Schneider Modicon M241
- Schneider Modicon M251
- Schneider Modicon M340
- Schneider Modicon M580
- Allen-Bradley MicroLogix
- Allen-Bradley CompactLogix
- Allen-Bradley ControlLogix
- Mitsubishi MELSEC
- Omron CJ / CP / NX / NJ
- ABB AC500
- Delta DVP / AS / AH series
- Beckhoff controllers
PLC systems can include CPUs, digital I/O, analogue I/O, communication modules, power supplies, expansion modules, remote I/O and specialised function modules.
2. HMI – Human Machine Interface
We supply and source industrial HMI equipment for machine and process monitoring.
Common HMI ranges include:
- Siemens SIMATIC HMI
- Siemens Basic Panels
- Siemens Comfort Panels
- Siemens Mobile Panels
- Allen-Bradley PanelView
- Schneider Magelis
- Schneider Harmony HMIs
- ABB CP600
- Mitsubishi GOT
- Omron NB / NA
- Weintek
- Delta HMI
- Advantech industrial displays
HMI systems can display alarms, trends, process parameters, production information, machine status and operator controls.
3. SCADA Systems
Nkokhi Group can source hardware and components for SCADA – Supervisory Control and Data Acquisition systems.
Typical SCADA infrastructure includes:
- PLCs
- Remote I/O
- Industrial PCs
- HMIs
- SCADA servers
- Operator stations
- Engineering stations
- Industrial Ethernet switches
- Modbus TCP/RTU
- Profibus
- Profinet
- EtherNet/IP
- OPC UA
- Remote telemetry
- Historian systems
- Alarm management
- Data acquisition systems
PLC, HMI and SCADA technologies are commonly integrated to monitor and control industrial processes.
4. Motor Control Centres – MCC
Nkokhi Group supplies and sources components for Motor Control Centres (MCCs) for industrial plants.
MCC Components
- MCCBs
- ACBs
- Contactors
- Overload relays
- Motor protection breakers
- Motor starters
- DOL starters
- Star-delta starters
- Soft starters
- Variable Frequency Drives
- Control transformers
- Protection relays
- Current transformers
- Voltage transformers
- PLC I/O
- Terminal blocks
- Control relays
- Safety relays
- Industrial Ethernet switches
- Busbars
- Enclosures
- Disconnectors
- Isolators
MCC systems can integrate motor starters, VFDs, protection and communications into a centralised motor-control infrastructure.
5. Variable Frequency Drives – VFD
Variable Frequency Drives (VFDs) provide variable-speed control of AC motors and are widely used for pumps, fans, conveyors, compressors, crushers and other industrial machinery.
Popular VFD Models & Families
Siemens
- SINAMICS G120
- SINAMICS G120X
- SINAMICS G130
- SINAMICS G150
ABB
- ACS150
- ACS355
- ACS580
- ACS880
Schneider Electric
- Altivar ATV320
- Altivar ATV340
- Altivar ATV630
- Altivar ATV930
Rockwell Automation / Allen-Bradley
- PowerFlex 4
- PowerFlex 40
- PowerFlex 525
- PowerFlex 753
- PowerFlex 755
Danfoss
- VLT HVAC Drive FC 102
- VLT AutomationDrive FC 302
- VLT Micro Drive
Delta
- VFD-E
- VFD-EL
- VFD-M
- C200
- C300
These drive families are widely used for industrial motor speed, torque and acceleration control.
6. Soft Starters
Nkokhi Group supplies and sources soft starters for applications where controlled motor starting and stopping is required.
Applications
- Pumps
- Compressors
- Conveyors
- Fans
- Crushers
- Blowers
- Industrial mixers
- Large rotating machinery
Common Manufacturers
- Siemens
- Schneider Electric
- ABB
- Rockwell Automation
- Eaton
- Danfoss
- WEG
- Carlo Gavazzi
Soft starters can reduce starting stress on motors and connected mechanical equipment.
7. Industrial Power Distribution
Our industrial power and control infrastructure offering includes equipment used to distribute, isolate, protect and control electrical power.
Products
- Distribution boards
- Main distribution boards
- MCCs
- DB boards
- MCCBs
- ACBs
- MCBs
- Fuses
- Fuse holders
- Isolators
- Changeover switches
- Disconnect switches
- Surge protection devices
- Busbars
- Power contactors
- Protection relays
- Control transformers
- Power supplies
- DC distribution
- AC/DC converters
- Industrial terminal blocks
8. Industrial UPS & Backup Power
Reliable control power is critical for PLCs, SCADA systems, instrumentation and industrial communication equipment.
Nkokhi Group can source:
- Industrial UPS systems
- Online UPS
- DC UPS
- 24 VDC UPS
- UPS batteries
- Battery chargers
- DC power supplies
- Redundant power supplies
- Industrial power conditioners
- Surge protection
- Power quality equipment
Popular manufacturers include:
- APC
- Schneider Electric
- Eaton
- Siemens
- ABB
- Phoenix Contact
- PULS
- Delta
- Mean Well
9. Industrial DC Power Supplies
Industrial automation systems frequently use 24 VDC control power.
We supply/source:
- 24 VDC power supplies
- Redundant power supplies
- DIN-rail power supplies
- 12 VDC supplies
- 48 VDC supplies
- 110 VDC supplies
- 230 VAC / 24 VDC supplies
- Battery-backed DC systems
Popular Manufacturers
- Siemens SITOP
- Phoenix Contact QUINT
- Schneider Phaseo
- ABB
- PULS
- Mean Well
- Weidmüller
- Allen-Bradley
10. Industrial Control Panels
Nkokhi Group can assist with sourcing components for:
- PLC panels
- MCC panels
- VFD panels
- Pump control panels
- Generator control panels
- Compressor control panels
- Conveyor control panels
- Process control panels
- Automation panels
- Remote I/O panels
- Distribution panels
- Instrumentation panels
Panel components can be supplied according to machine specifications, existing equipment and project requirements.
11. Industrial Automation Networking
Modern automation systems depend heavily on reliable industrial communication.
Industrial Communication Technologies
- Industrial Ethernet
- Profinet
- Profibus DP
- Modbus RTU
- Modbus TCP
- EtherNet/IP
- CANbus
- DeviceNet
- EtherCAT
- OPC UA
- HART
- RS-232
- RS-485
- Fibre optic Ethernet
Networking Equipment
- Managed Ethernet switches
- Unmanaged switches
- Fibre switches
- Industrial routers
- Ethernet gateways
- Protocol converters
- Serial-to-Ethernet converters
- Remote I/O
- Wireless industrial gateways
- Industrial communication modules
12. Remote I/O
Remote I/O allows field devices to communicate with PLC and automation systems without requiring all I/O wiring to return directly to the main PLC cabinet.
Popular Remote I/O Platforms
- Siemens ET 200
- Allen-Bradley POINT I/O
- Allen-Bradley FLEX I/O
- Schneider Modicon STB
- Schneider Modicon TM3
- ABB S800 I/O
- Beckhoff EtherCAT I/O
- WAGO I/O
- Phoenix Contact Axioline
- Advantech remote I/O
13. Industrial Instrumentation
Nkokhi Group can source instrumentation used for measurement and process control.
Instrumentation
- Pressure transmitters
- Differential pressure transmitters
- Temperature transmitters
- RTDs
- Thermocouples
- Flow meters
- Magnetic flow meters
- Ultrasonic flow meters
- Level transmitters
- Radar level sensors
- Ultrasonic level sensors
- Proximity sensors
- Photoelectric sensors
- Encoders
- Vibration sensors
- pH sensors
- Conductivity sensors
- Analytical instrumentation
14. Safety & Protection Systems
Industrial automation projects may require dedicated safety systems for personnel and equipment protection.
Products
- Safety PLCs
- Safety relays
- Emergency-stop systems
- Safety light curtains
- Safety switches
- Guard switches
- Safety contactors
- Interlocks
- Machine safety controllers
- Overload protection
- Motor protection
- Arc-flash protection
Major Industrial Automation Manufacturers
Nkokhi Group can source equipment from major international manufacturers, subject to availability and technical specification.
| Manufacturer | Major Product Categories |
|---|---|
| Siemens | PLC, HMI, SCADA, VFD, soft starters, power supplies, networking |
| Schneider Electric | PLC/PAC, HMI, VFD, MCC, contactors, protection, power distribution |
| ABB | PLC, drives, MCC, motors, instrumentation, power and automation |
| Rockwell Automation / Allen-Bradley | PLC, HMI, VFD, MCC, safety, I/O |
| Eaton | MCC, breakers, motor control, UPS, power distribution |
| Mitsubishi Electric | PLC, HMI, VFD, servo, robotics |
| Omron | PLC, HMI, sensors, safety, drives |
| Honeywell | DCS, PLC, process control, instrumentation |
| Emerson | DCS, PLC, instrumentation, process automation |
| Yokogawa | DCS, PLC, instrumentation, process control |
| Beckhoff | PLC, IPC, EtherCAT, I/O, motion control |
| Phoenix Contact | PLC, I/O, power supplies, networking, terminals |
| WAGO | PLC, I/O, terminals, industrial networking |
| Advantech | Industrial PCs, remote I/O, networking, automation |
| Delta Electronics | PLC, HMI, VFD, servo, power electronics |
| Danfoss | VFD, motor control, power electronics |
| PULS | Industrial DC power supplies |
| Weidmüller | Terminals, power supplies, I/O, industrial networking |
| WEG | Motors, VFDs, soft starters, motor control |
Schneider Electric, for example, currently lists PLC/PAC controllers, variable-speed drives, soft starters, industrial software, motion control and enclosures within its automation portfolio. Rockwell’s portfolio similarly includes motor controllers, contactors, MCCs, soft starters and VFD-integrated motor-control solutions.
Popular Industrial Automation Models & Series
Siemens
- SIMATIC S7-1200
- SIMATIC S7-1500
- SIMATIC S7-300
- SIMATIC S7-400
- ET 200SP
- ET 200S
- SIMATIC HMI Comfort
- SINAMICS G120
- SINAMICS G120X
- SITOP
Schneider Electric
- Modicon M221
- Modicon M241
- Modicon M251
- Modicon M340
- Modicon M580
- Harmony HMI
- Altivar ATV320
- Altivar ATV340
- Altivar ATV630
- Altivar ATV930
- TeSys
Allen-Bradley / Rockwell
- MicroLogix
- CompactLogix
- ControlLogix
- POINT I/O
- FLEX I/O
- PanelView Plus
- PowerFlex 525
- PowerFlex 753
- PowerFlex 755
- SMC soft starters
ABB
- AC500 PLC
- ACS355
- ACS580
- ACS880
- S800 I/O
- CP600 HMI
Mitsubishi
- FX Series
- Q Series
- L Series
- iQ-F
- iQ-R
- GOT HMI
- FR Series drives
Omron
- CP Series
- CJ Series
- NX Series
- NJ Series
- NA HMI
Industrial Automation Power & Control Applications
Nkokhi Group supports sourcing for:
Mining
- Crushers
- Conveyors
- Pumps
- Fans
- Compressors
- Processing plants
- Bulk material handling
Water & Wastewater
- Pump stations
- Water treatment plants
- RO plants
- Sewage treatment
- Chemical dosing
- Filtration
- Level control
- Flow control
Manufacturing
- Production lines
- Packaging
- Assembly
- Material handling
- Robotics
- Process control
Energy & Utilities
- Power generation
- Substations
- Generator systems
- Pumping stations
- Renewable energy
- Utility infrastructure
Oil & Gas
- Pumping
- Compression
- Process control
- Tank farms
- Instrumentation
Food & Beverage
- Processing
- Filling
- Packaging
- Refrigeration
- Conveyor systems
- CIP systems
Industrial Automation Parts Supply & Sourcing
Nkokhi Group can assist when customers need a replacement PLC module, obsolete automation component, VFD, HMI, power supply, relay, communication module or control component.
We can work from:
- OEM part number
- Manufacturer part number
- Model number
- Serial number
- Photograph
- Nameplate
- Existing module
- Machine model
- PLC rack configuration
- Electrical drawings
- Panel photographs
- Technical datasheet
We can assist with sourcing current-production, replacement, surplus, refurbished and legacy/obsolete components, subject to availability and verification.
Most Searched Industrial Automation Keywords
This page is designed around high-value search terms including:
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Why Choose Nkokhi Group?
Multi-Brand Sourcing
We can source across multiple OEMs instead of restricting customers to one automation manufacturer.
Legacy Equipment Support
Older PLCs, HMIs, drives and communication modules can become difficult to source. Nkokhi Group can assist with identifying replacement and alternative components.
Technical Identification
Send us the part number, photograph, nameplate or equipment details and we can help identify the required component.
Industrial Applications
Our sourcing capability covers mining, manufacturing, water treatment, energy, utilities, material handling and other industrial applications.
South African Supply
We supply customers in South Africa and can arrange delivery or customer collection.
Tips for Buying Industrial Automation Equipment
1. Always confirm the complete part number
A single missing suffix can represent a different voltage, communication protocol, firmware generation or hardware revision.
2. Photograph the existing equipment
Send clear photographs showing:
- Front
- Side
- Product label
- Part number
- Serial number
- Terminal connections
- Existing PLC rack
3. Check voltage requirements
Confirm whether the equipment requires:
- 24 VDC
- 110 VAC
- 120 VAC
- 220–240 VAC
- 380–415 VAC
- 480 VAC
- Other system voltage
4. Confirm communication protocol
For PLC and networking equipment, verify whether the system uses:
- Profibus
- Profinet
- Modbus
- EtherNet/IP
- CANbus
- EtherCAT
- RS-485
- Other protocols
5. Check compatibility before replacing a PLC module
Do not assume that a newer module is automatically a plug-and-play replacement. Check CPU compatibility, firmware, rack configuration, I/O addressing, software and communications.
6. For VFDs, provide motor information
A VFD quotation should ideally include:
- Motor manufacturer
- Motor kW
- Voltage
- Current
- Frequency
- RPM
- Motor type
- Application
- Existing drive model
7. For MCC components, provide the motor rating
Motor power, voltage, FLA, starting method and duty cycle help determine the appropriate contactor, overload, breaker, starter or VFD.
Frequently Asked Questions
What is industrial automation?
Industrial automation uses control systems, computers, PLCs, sensors, drives and software to automatically monitor and control industrial machinery and processes.
What does an industrial automation system include?
A typical system can include PLC, HMI, SCADA, sensors, remote I/O, VFDs, MCCs, industrial networks, power supplies and electrical protection equipment.
Does Nkokhi Group supply PLC modules?
Yes. Nkokhi Group can source PLC CPUs, I/O modules, communication modules, power supplies, expansion modules and other automation components.
Can you supply obsolete PLC modules?
We can assist with sourcing legacy and obsolete equipment where available, including replacement, surplus and refurbished options. Availability and condition should be confirmed for each part.
Can you supply Siemens PLCs?
Yes. Siemens SIMATIC PLCs and associated automation equipment can be sourced according to the required model and specification.
Can you supply Allen-Bradley PLCs?
Yes. We can source Allen-Bradley / Rockwell Automation PLCs, I/O, HMIs, drives and related components.
Can you supply Schneider Electric automation equipment?
Yes. Schneider Modicon PLC/PAC systems, Altivar drives, Harmony HMIs, TeSys motor-control equipment and related products can be sourced.
Do you supply VFDs?
Yes. We can source VFDs from major manufacturers including Siemens, ABB, Schneider Electric, Allen-Bradley, Danfoss, Delta and others.
Can you supply MCC components?
Yes. We can source MCCBs, ACBs, contactors, overloads, motor starters, VFDs, soft starters, protection relays, control components and related equipment.
Can you identify an automation component from a photograph?
Yes. Send clear photographs of the component label, part number, connections and surrounding equipment. Providing the machine or system model is also useful.
Do you supply industrial UPS systems?
Yes. Industrial UPS, DC UPS, power supplies, battery systems and related power-quality equipment can be sourced according to the application.
Do you supply complete automation systems?
Nkokhi Group can assist with sourcing the required hardware and components for complete automation projects. Engineering, programming, panel construction and commissioning requirements should be assessed according to project scope.
Request an Industrial Automation RFQ
For a quotation, send Nkokhi Group:
📸 Equipment photographs
🔢 OEM / Part Number
🏷️ Manufacturer
⚙️ Machine / System Model
🔢 Quantity Required
⚡ Voltage / Power Rating
🌐 Communication Protocol
📍 Delivery Location
For replacement components, a photograph of the existing unit and its nameplate can significantly improve identification accuracy.