Loadmaster MCB Info!!

[mags1972]

Hi, came across an old farm house that had been converted the other day, it had a three phase supply, and 4 DB's, 2 fed off L1, the other 2 off l2 and l3 respectively as they had been altered at the source for Economy 7.
The Boards were the Dorman Smith 15 series with loadmaster MCBs which are way before my time and obselete from what I now hear.
Just wondered if anyone had any technical info on them for certification purposes, max Zs, SSC, etc as the circuit I worked on was supplied by an 8A breaker, so I used the info for a c type 10A breaker as I was told by a switchgear manufacturer that the loadmaster breakers have a power curve similar to c type MCBS.
And I have recommended that the Db's be modernised

 

[Mr Mark Sparks]

there are 2 types of these mcbs if the switch on the mcb is the whole width of the mcb it its type 3
it the switch is small about10mm wide these are type 4
this info came from dorman smith
you can still get these but they are all type 4 now so unlikly to comply

 

[mags1972]

there are 2 types of these mcbs if the switch on the mcb is the whole width of the mcb it its type 3
it the switch is small about10mm wide these are type 4
this info came from dorman smith
you can still get these but they are all type 4 now so unlikly to comply

Thanks Mark, yeah its a type 4 MCB all right!!

 

[scotsparky]

the loadmaster MCBs can still be souress from Newey and Ayres (Ross electrical in scotland). However doman are running there stocks down.