Additional brief-circuit safety is not really needed to the defense of the person motor circuits, leaving just the prerequisite for cover from the feeder circuit conductors by an upstream protective system. - SACE Tmax https://alvindyjq934814.wikipublicity.com/5717366/abb_xt4s_250_ekip_lsi_in_60a_3p_f_f_ul_csa_1sda075431r1_an_overview