50A 3-phase circuit breaker

lazzalazza Posts: 326Solar 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: 1,884Solar Expert ✭✭✭✭
    A 50A 3 phase breaker would be 50A per phase.
      1500W, 6× Schutten 250W Poly panels , Schneider 150 60 CC, Schneider SW 2524 inverter, 8×T105 GC 24V nominal 

Sign In or Register to comment.