MOTOR NAME MODIFIER ALTERNATING CURRENT ASYNCHRONOUS INDUCTION TYPE CAGE ROTOR NUMBER OF PHASES THREE-PHASE DEGREE OF PROTECTION IP-55 INSULATION CLASS F CATEGORY B SERVICE FACTOR 1.15 SUPPLY VOLTAGE 460 V FREQUENCY 60 HZ COOLING METHOD IC 0411 WORKING REGIME S1 STANDARD NEMA CONSTRUCTION FORM B35D HOUSING 256T NUMBER OF POLES 4 POLES RATED POWER 20 HP COMMERCIAL REFERENCE LEESON-N256T17FB6B