Hazardous Area / RCBO use

[riotmaster]

I've heard somewhere along the line that using Schneider / Merlin Gerin RCBO's is not recommended for RCD protection, in my case I'm referring specifically for protection of circuits within hazardous areas. Infact, I believe in the same conversation there was mention that RCBO's had been banned in France due to the same reason, that of a fault within the RCD part of the RCBO.
Trouble is, I cant remember who I had the conversation with as it was a while ago, but if someone can either back me up, put me right or otherwise that would be really helpful! (And a link to some info would be brill, though I arent expecting so)
Thanks in advance all for any responses.

 

[netblindpaul]

Most RCBO devices are single pole solid neutral, thus in the event of any fault which is detected & disconnected by the RCD element the neutral conductor will remain connected to the supply.
Perhaps this is the reason?
This is not restricted to Schneider group products though.

 

[Knobhead]

That would be a logical argument against them for hazardous areas.You could try [email protected] and asking them.

 

[Engineer54]

There are plenty of DP RCBO's out there, and MG have always been recognised as a premium electrical supplier of protective devices from LV to MV. Having said that, i have never put full confidence of reliability in any RCD device no matter who's manufacturer they are from.... I've not heard of this recommendation within hazardous areas either!!