Industrial automation in stock - get projects moving from Samrand
When a machine goes down, a prototype deadline looms or a student lab needs parts for tomorrow’s practical, waiting weeks for overseas freight is not an option. Communica holds thousands of automation components locally so technicians, engineers and makers in South Africa can restore, iterate and build without unnecessary delay. We focus on in-stock availability, practical interchange guidance and procurement-friendly service - VAT invoices, branch collection and account quotes.
Why local stock matters for your schedule
Local inventory reduces project risk. You can check live stock, collect from Samrand or other branches, and get an immediate VAT-compliant invoice for your department or project account. For delivery windows and branch hours see Branches & Trading Hours.
What you’ll find in stock today
From compact PLCs and IO modules to proximity sensors, industrial relays, motor drives and DIN-rail power supplies - our assortment targets the parts you actually need on the bench. Browse by category to compare ranges and form-factors at industrial automation in stock south africa or view our full index at All Products.
Quick specification callouts (what to check before you buy)
A few focused checks prevent returns and reorders: voltage and current ratings, I/O signal type (sinking vs sourcing), communication protocol (Modbus, EtherNet/IP, Profinet, RS-485), and mounting style (panel, DIN-rail). For brand options and alternative suppliers see industrial automation supplier south africa.
Compact spec comparison
Use this quick table to compare typical starter PLC modules you’ll find in stock:
| Feature | Small PLC (4-16 I/O) | Modular PLC (32+ I/O) | Microcontroller Dev Kit |
|---|---|---|---|
| Typical use | Machine control, small panels | Complex lines, expandability | Prototyping, education |
| Power | 24 V DC | 24 V DC / 230 V AC options | 5 V / 3.3 V |
| Comm | GPIO, RS-485 | Ethernet, fieldbus | USB, UART, I2C, SPI |
| Mount | DIN-rail | DIN-rail / panel | bench / PCB |
Practical wiring diagram (common IO loop)
Simple wiring layout for a 24 V DC discrete sensor into a PLC input and a relay output driving a contactor:
24VDC + ----[Sensor NO]---- PLC INPUT PLC OUTPUT (24VDC) ----[Relay Coil]---- 0V Mains 230VAC L----[Contactor]---- Motor Mains N --------------------------- Motor
Label cables, use ferrules on stranded wire, and keep signal and power runs separate to reduce noise. For wire, connectors and enclosures, explore our tools and enclosures collection under buy industrial automation south africa.
