Specifications: Type Rated thermal current (A) Rated operating current at AC 3 380V (A) Rated operating current at 660V (A) The power of controlled motor (KW) Type of auxiliary contact 380V 660V 3TB40 20 9 3.33 4 5.5 1NO 3TB41 20 12 4.33 5.5 7.5 1NC 3TB42 30 18 7.77 7.5 11 1NO+1NC 3TB43 30 22 8.5 11 11 2NO+2NC 3TB44 45 32 12 15 23 2NC+2NO