The Leviton MS303DSS is a motor starting switch from industrial grade AC manual motor controllers product line. It is known for its simple installation and resilience to heavy duty use. This particular model comes in black. The Leviton's safety switches and motor controls are designed to provide reliable, safe control of different motor loads. You can use this MS303DSS motor controller not only with singlephase applications, but also with threephase ones. This controller has thermoplastic parts. They are designed to withstand the hardest tasks, providing superior resistance to impacts, solvents and chemicals. The Leviton brand offers you the highest in production standards according to National Electrical Manufacturers Association.