Merlin Gerin MCCB

[Stocksie]

Off hand does anyone know the BS no and the kA rating for a 125 A .Its about a 30 year old installation so BS 3871 equivelent.

 

[pete555]

is it an old c100 series

 

[Stocksie]

Yeah its a C125 adjustable down to 63 A

 

[Guest55]

the current equivolent is the BS-EN 60947-2.
Psc rating will be from about 16ka upwards.

 

[capitolltd]

The MCCB would most likely be a BS4752 device which was later replaced by BS EN 60947-2 in 1992.
The kA rating changes depending on model and voltage. Any chance of a part number?

 

[capitolltd]

A C125N has a kA rating of 22@415v

 

[Stocksie]

Thank you very much men !

 

[Engineer54]

A C125N has a kA rating of 22@415v

They must have improved the ratings then, as i'm pretty sure a C125N was rated around 15/16KA at 380/415V

 

[pete555]

A C125N has a kA rating of 22@415v

according to tech spec from merlin now schneider the N on the end denotes 25 kA not sure if this one is a C 125N as the C series usually was as read agree on 60497-2 as the C series came out about then

 

[capitolltd]

25kA is indeed correct for 250v DC