Eutechnyx

I don't see any signs of arc quenching plates in your ATS. Exactly the same as in that Geya you ordered as a replacement. I've tried almost all of them that you can buy on the marketplaces, and here is what i think... These Geya, Tomzn, EARU ATS's are crap. No matter what brand is printed on the housing, if their shape is the same as in my photos - they're all the same inside. The static contact plates are very thin, the switching contact is made by flattening the core to form contact pads, there is no arc-extinguishing chamber (only a thin toothed plate that can only prevent the case from melting and nothing else). I don't understand how they withstand those 8000 switching operations that is specified in their manual. The only acceptable quality ones at this moment are ManHua (also sold under other brand, like ZJMNFU on Tao) if you want a 1-phase ATS and a CSQ for a 3-phase setup. I'll attach some internal photos... The newer ManHua units have a Nuvoton MCU inside them to control the ATS, not just a simple dumb relay - the result is lightning fast switching time, source priority can be set by the switch. Also note the huge arc chamber, the thickness of the contact plates, and the overall quality of the parts... There are many similar type ATS like that CSQ I've posted here, but some of them does not include arc quenching plates in the models below 100A, like 63A or less (so always order the highest rated unit in the lineup, whether you will be using it at 100A+ or not). I also noticed a strange mounting configuration of the internal A/B source detection microswitches inside some of them, which can cause them to wear out over time easily because they are directly mounted to contact the shaft (last picture, notice the difference of this part in the CSQ).

Greetings! Bought 5x US5000 units (non 1C), came as a bunch of different firmwares - v1.3, v1.9 and v2.0. All units were manufactured in 2024, serial numbers are Y240XXXC5XXXXXXX. Is there any way to download that v2.0 to update them all or maybe somebody can share this or newer version? So called "support" replies with a common "not needed" answer.