4 pole motor - Pumps are of the canned rotor type, meaning that the pump and motor form an integral unit without shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid. - Stainless steel rotor can, bearing plate and rotor cladding - Stator housing in aluminum alloy can be turned to change the position of the terminal box - Stator housing has 8 drain holes (that must point downwards) to allow condensed water to escape - Stator with built in thermal overload switch.