Moeller Germany("an EATON brand" now) is just promoting a "firemen disconnect" for pv installations with DC capabilities up to 1kV in a variety of forms.
If actuated it shortens the dc part, so no dangerous voltage shall be present. I think they are not yet available in numbers but might be sold with you quickly if there is a real demand in the market.
Didn't find an English description. Maybe to be sold in the US not as "Moeller" but directly as "Eaton". Btw, also here the standards are behind reality.
Here a link to a German descrpition on
www.moeller.net with some photos:
http://www.moeller.net/binary/presse/publications/de_special_09_09.pdf
