Automatic Transfer Switch, Dual Power Automatic Transfer Switch Circuit Breaker 220V 63A 2P, Din Rail Type Changeover Switch Conversion Switches

Use this to charge my Delta Max from the inverter during peak electricity rate periods, switches back over to mains to charge at cheap rate. Reliable when used with smart switches.

The media could not be loaded. It's connected to the solar inverters battery emergency power system, seems to be working fine

Firstly there is an excellent YouTube review of a visually identical device available which covers its internal workings and the slight shortcoming with the ratings of the isolators. I removed the covers over each breaker on mine...they just clip on...and unlike the YouTube review, mine are marked, but as the spec says are 63 Amp but with a break current of only 3000 amps....Most UK breakers are rated to 6000 amps. They are just isolator switches with no overload trip so when installing, the main and auxiliary supplies should be protected with suitably rated MCB's or preferably RCBO devices.... I used 16 amp type B RCBO's on the domestic main and auxiliary mains supplies as mine just runs a small greenhouse heater supply.The main issue to be aware of is that, as supplied, the device may seem to be ready to use but is NOT as there is no way to install without primary insulation being exposed and worse; the terminal screws are accessible with any small metal object so there is a shock risk present. Also no earth terminals for incoming or outgoing cables are provided.To use in the UK and comply with BS7671 you will need to fit the device in a suitable outer enclosure proving appropriate intrusion protection. Ideally this should be IP4X. I solved the install issue by fitting the device in a surplus Eaton Memera metal consumer unit having removed the old main switch and breakers but it is not easy as some careful modifications to the enclosure were needed to get the device to fit. However once done IP protection was achieved and the device installed and works well. The enclosure I used also has an earth bus bar to allow the earth cables to be correctly joined. Functionally I would give it five stars but given it needs to be enclosed and this is not a simple exercise I have given it four stars.

My generator

From electric to solar , just very good 👍 easy to fit , thanks from Noel