06:15 Dec 16, 2011 

Its regarding packaging of different types of components, and this one is given under operation of circuit breaker at reduced pressure under heading"Annex"

23:12 Dec 15, 2011 

Yes, but that's only local detail; what we really need to know here is what the overall text is talking about, as JG says, what type of circuit-breakers are involved, etc. etc. If you do not already have this information, you should ask your customer.

23:10 Dec 15, 2011 

Here is more context:
FERMETURE
Mettre en marche le groupe ; la pression monte automatiquement vers 220 bars environ puis se coupe (réglage manostat).
Appuyer manuellement sur le levier de déclenchement se trouvant sur les bobines du BLOC OP.Le vérin est actionné.Le disjoncteur se ferme.

22:53 Dec 15, 2011 

...in the specific context of circuit-breakers usually refers to the 'block' or module that actually operates the switching action in modular devices.

As ever, more context would be very helpful here!

22:50 Dec 15, 2011 

Miniature Circuit Breaker or Residual Current Circuit Breaker (Ground Fault Circuit Interrupter)?
Cf.
http://en.wikipedia.org/wiki/Circuit_breaker
and
http://en.wikipedia.org/wiki/Residual_current_device

22:48 Dec 15, 2011 

if the breaker is located in a hospital or to be mounted in a hospital