Hi,

We hunted around for quite some time and didn’t find much that we liked when we were using them, they all seemed a bit twitchy, but we’ve had good results from the APC ATS range - we have 10 or so of them in use.  YMMV but they seem really solid, and we’ve have had no issues with them.  We have the AP7721 (http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=AP7721) & AP7723 (http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=AP7723) - not sure they go as small as you’re saying you want to go, but there are a few options here: http://www.apc.com/products/family/index.cfm?id=14.

TechPac has them in stock from time to time.  We ordered them through Dominic at Sereno.

Cheers,
Gerard


On 18/02/2015, at 4:11 pm, Mark Foster <blakjak@blakjak.net> wrote:

Hiya folks,

Looking for a cost-effective solution to automatically switch a non-redundantly-powered device between redundant power supplies.
For example running a single switch between a UPS-backed power supply and a direct-mains power supply, so that I have some tolerance should the mains supply to the UPS fail (or the UPS itself).

Essentially something like this:

http://www.cdlnz.com/index.html?do=viewproduct&p=NR605&code=RP-ATS

But i'm looking for something relatively small and for a relatively low number of devices (say anywhere from 1 to 3). I'm also not necessarily looking for >10A 240V; the gear that'll be being run, is quite low current.

Anyone got any recommendations?

Thanks
Mark.
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