3 phase breaker sizing

Discussion in 'General Electronics Chat' started by jmastro, Dec 1, 2013.

  1. jmastro

    Thread Starter New Member

    Dec 1, 2013
    I have two machines, could someone help me with the correct sizing of the breakers for these machines? The manufacturer can not give me any other info, your help would be appreciated, Thanks.

    1) Power consumption: 1.6 kW - three-phase, 5 poles. 220 volts 8 amps

    2) Power required: 0.5 kW - Single phase 220 V 3amps.
  2. MaxHeadRoom


    Jul 18, 2013
    The majority of 3ph equipment comes with a disconnect that either consists of a NFB (non-fused breaker) or 3 main fuses just after the D.Conn.
    If this for supply panel means, then you need at least 12amps and 5amps time delay fusing.
    Or the equivalent in breakers.
    michatn and Meixner like this.