Leviton MS303-DS: 30A 600V Three-Phase AC Motor Starter, Industrial Grade

Designed for industrial settings, the Leviton MS303-DS is a rugged motor starter switch that provides manual ON/OFF control for a wide range of equipment. With a 30 Amp, 600 Volt rating and a three-pole, three-phase design, it can serve as a dependable motor disconnect in demanding environments.

Reliable, purpose-built control

This model blends tough construction with a tactile toggle that delivers a confident click and long service life in busy facilities.

• Safe, dependable control of various motor loads, with optional motor disconnect
• Compact footprint that fits standard wall boxes for easy retrofits
• Flexible wiring options: back or side wiring with clamps or ring terminals
• Oversized toggle for clear actuation feedback and durable operation
• Nickel-plated #10 terminal screws resist corrosion for lasting connections

Common uses in manufacturing and facilities

• Manual control for conveyors, pumps, HVAC, and air compressors
• Support for bottling lines and other heavy industrial equipment
• Three-phase motor control in commercial or light manufacturing settings
• Retrofit or new installations where a reliable disconnect is desired

Installation notes and compatibility

Designed to fit standard electrical configurations, the MS303-DS can be wired for secure, quick connections and pairs with control panels commonly found in industrial environments. Its three-pole, three-phase design aligns with typical motor loads.

Non-grounding design aligns with certain control schemes and disconnect configurations commonly used in facilities.

Leviton combines high-grade materials with strict manufacturing standards to deliver components that withstand daily use in demanding settings. This motor starter emphasizes practical reliability and versatility without unnecessary complexity.