Js series single phase motors Js series(nema)steel single phase asynchronous motor Js series single phase motors, one of our latest developed products with european standard. Frame: y80-y355 Output(hp): 1/4hp-2hp Rated voltage(v): 115v/230v Frequency(hz): tefc 60hz Speed 1720r/min-3450r/min Protection class: Mounting type: 48, 56, 145t