ms303Description Leviton, MS303-DS, AC Motor Starter Switch, Industrial Grade Manual Non-Grounding, 600 VAC, 30 A, 20 hp Power, TPST Contact Confuration, 30 A at 600MS303-DSW Manual Motor Controller 30 Amp, 600 Volt, 3-Pole, Three-Phase Single Throw AC Manual Motor Controller, Suitable as Motor Disconnect, Standard Toggle, Industrial Grade,