crabtree polestar rcbo help please

[dogwind]

Hi does anyone know if i can get a single pole crabtree polestar 50A type B 30mA rcbo, i have been asked to install a 10kw shower and the DB is a 3 phase board, i have had a look online and so far its looking like i am going to have to fit a MCB to feed a shower rcd consumer unit but i would prefer to fit an rcbo straight into the original DB if poss
Thanks for any help

 

[londonlec]

I haven't got time to look on your behalf, but look on www.fusecompany.co.uk < or similar. They have had every one I have ever required.