Calama "NIRANTAR SERIES" Totlly Enclosed Fan Cooled, Squirrel Cage, IE2 Energy Efficient A.C. Electrc Motors Calama offers IS/IEC metric frame IM Series Motors in Cast Iron body construction.IM series covers output from as 0.18Kw to 55.0Kw in frame size 63 to 250M in 2, 4 & 6 pole speeds. Available with IE2, IE3 Efficiency. Many applications often have adverse operating conditions including repeated starting and occasional overloading; the IM cast iron range is well suited to these situations.