Buy industrial automation with confidence at Communica
Choose components and small systems backed by immediate local availability and practical selection advice tailored for South African projects. Whether you are a university lab building a PLC teaching rig, a workshop automating conveyors, or a procurement officer sourcing controllers and I/O, Communica’s depth of brands and branch pickup options reduce lead-time risk while keeping installation simple.
Why buy from a local distributor
Local stock in Samrand, Pretoria CBD and Cape Town means you can inspect parts, collect same-day from a branch, and get VAT invoices for institutional purchases. If a part is not on the shelf, we provide stock updates and delivery options to minimise project delays. Learn more about our company background and national footprint on our About Us page.
Practical specification callouts
When selecting automation components, focus on electrical ratings, environmental protection, and communication compatibility. Typical quick checks include:
- Controller I/O count and expansion options (digital vs analogue)
- Power supply voltage and inrush handling for contactors and drives
- Network protocols required: Modbus TCP, EtherNet/IP, PROFINET compatibility
Compare categories and available product families in our collections to match role and budget: Shop by Category and browse brands on our Shop by Brand page for brand-level comparisons.
Specification comparison (typical parts)
Use this quick table to shortlist controllers, power supplies and I/O modules according to common project constraints.
| Component | Key spec | When to choose |
|---|---|---|
| Compact PLC | 8-32 digital I/O, Ethernet | Small machines, education rigs |
| Modular PLC | Expandable slots, mixed I/O | Production lines needing future growth |
| 24 VDC PSU | Rated current, 100-240 VAC in | Control cabinets and sensors |
Compatibility guidance and accessory bundles
Specify communication modules and termination blocks together with controllers to avoid compatibility gaps. Typical accessory bundles we recommend for first-time system builds:
- PLC + I/O expansion board + 24 VDC power supply + DIN rail enclosure
- Industrial Ethernet switch + shielded patch cables + SFP module (if needed)
- Safety relay + contactor set + labelled terminal strips
Explore real stock and start building a parts list in our full product index: All Products.
