7.Insulation class: class b/f 8.Protection class: ip54/ip55 Application: Ms series three phase induction motors are newly designed based on series y motor and generaly purpose low voltage three phase induction motors of basic series. As compared with series y series, the ms series motors feature are high efficiency and starting torque. Ms series are generally purpose motors suitable for common working environment and machinery without special requirement, like air-compressor, pump, fan, medical apparatus and instruments, small machines etc. Ms motor can be equipped with ptc. Willda brief introduction: Willda factory is the professional ac motor manufacturer and exporter, Single phase: mc/ml/ my/yc/yl series Three phase: aeef/y/y2/ms/russia gost series. If you are interested in it, welcome to email us or call us freely. I) 112 frame or below: packed by carton firstly, then packed by plywood pallet together Ii) 132 frame or above: packed by plywood/wooden pallet seperately.