Tronic Automatic Transfer Switch 200A

Our review

This is a 200-amp automatic transfer switch built around a microprocessor controller, made by Tronic. Its job is to watch the incoming mains supply and respond when something goes wrong: a total loss of power, overvoltage, or undervoltage on a phase. When that happens, the controller triggers the switch to move the load over to your backup source, so you are not manually flipping breakers in the dark. It suits homes, shops, guesthouses and small commercial premises with a generator or inverter backup, especially where the supply is unstable. Before buying, confirm your backup source can actually carry the load and that 200A matches your main breaker and wiring; an oversized switch is not a substitute for correct cable sizing. Also check how your generator's start signal will be wired, since the listing gives no further specifications. Compared with manual changeover switches, this removes the human delay, and compared with smaller ATS units it handles heavier total loads. Read the full details on Sokonia before deciding.