Reliable, compact and easy to fit, this plug-in transformer converts the standard 230V AC mains into a steady 16.5V AC supply suitable for control circuits, automation devices and low-voltage electronics. Its screw-type terminal block and integrated fuse protection make installation secure and maintenance straightforward — a practical power solution for technicians, installers and DIYers across South Africa. 

Why choose this transformer

• Stable output: Provides a reliable 16.5V AC output rated at 1.25A (approx. 20VA) for consistent device performance. 
• Easy to install: Plug-in design with screw terminal blocks for secure wiring — ideal for quick replacements or retrofit installs. 
• Built-in safety: Integrated fuse protection guards against overcurrent and helps protect downstream equipment. 
• Compact & durable: Robust molded enclosure for long-term outdoor-rated performance in protected locations and for space-conscious installations. 
• Low interference: Engineered for stable output with minimal electromagnetic interference — good for sensitive control and automation circuits. 

Key specifications

• Output: 16.5V AC, 1.25A (≈20VA). 
• Input: 230V AC, 50/60Hz. 
• Connections: Screw-type terminal blocks for secure AC wiring. 
• Protection: Integrated fuse for overcurrent safety. 
• Enclosure: High-quality molded body — compact and lightweight. 
• Typical applications: Control circuits, automation systems, CCTV accessories, door-openers, alarm accessories and other low-voltage electronics. 
• Shipping: Ships in 1–3 workdays (seller stock info). 

Installation & usage tips

• Isolate mains power before wiring — always follow local electrical rules and use a qualified electrician where required.
• Strip cables to the correct length and tighten the screw terminals securely to avoid loose connections or arcing.
• Fit the transformer in a dry, ventilated location away from direct rain — the unit is for protected indoor/outdoor use (mount under eaves or in an IP-rated enclosure if exposed).
• Check the load of the connected device(s) — keep total current draw at or below 1.25A to avoid overheating and blowing the internal fuse.

Safety & care

• Do not open the molded enclosure — there are no user-serviceable parts inside.
• Replace the integrated fuse only with the correct rating as specified by the installer or supplier.
• If the unit becomes hot, emits unusual smells or trips repeatedly, disconnect immediately and have it inspected or replaced.
• Observe local wiring regulations and use appropriate cable sizes and protective devices (MCB/RCD) where required.

What’s in the box

• 1 × Plug-in Transformer — 16.5V AC, 1.25A (20VA)
• 1 × Product leaflet / wiring diagram
• Mounting hardware where applicable (check product packaging)

Need matching parts? Consider our range of terminal blocks, cable and mounting enclosures for a neat, professional installation.