50A 3-phase circuit breaker

lazzalazza Posts: 330Solar Expert ✭✭✭
HI All

Excuse my ignorance on this topic. I'm trying to work out how many kW a 3-phase (380V as we are in Europe) 50A MCB circuit breaker can deal with until it trips.

Some people tell me it's 50A per phase, and others that it's 50A over the 3 phases, which is another calculation. There seems to be lots of confusion.

Can anyone enlighten me?



  • mcgivormcgivor Posts: 2,302Solar Expert ✭✭✭✭✭
    A 50A 3 phase breaker would be 50A per phase.
    1500W, 6× Schutten 250W Poly panels , Schneider MPPT 60 150 CC, Schneider SW 2524 inverter, 400Ah LFP 24V nominal battery bank 

Sign In or Register to comment.