THREE-PHASE ASYNCHRONOUS MOTORS "TA" series 4-Poles Overall dimensions TA Series Mounting B5 - Frame size 56÷132 Self-ventilated motors (IC 411) Overall dimensions TA Series Mounting B14 - Frame size 56÷132 Self-ventilated motors (IC 411) Overall dimensions TA Series Mounting B3/B5 - Frame size 56÷132 Self-ventilated motors Technical data IE1 Effi ciency class (IEC 60034-30; 2008) Insulation class F - S1 Duty - 400 V - 50 Hz 4 poles - 1.500 rpm