.The ambient temperature of the shaded-pole motor is -25°C~ 50°C, the insulation class is class B, protection grade is IP42, and it has widely used in condensers,evaporators and other equipment. There is a ground line in each motor. 2. Motor has impedeance protection if the output is blow 10W, and we install thermal protection(130 °C ~140 °C ) to protect the motor if the output is more than 10W. 3. There are screw holes on the end cover; bracket installation; grid installaton; flange installation; also we can customize according to your request.