Motor Starter Controls | McMaster-Carr

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About Motor Switches and Starters

Motor Starters

Provide on/off control for a motor and protect it from overloads. These starters shut the motor off if current exceeds the full-load current rating.

Low-Profile Motor Starters

With a shallower depth than most other starters, these fit in narrow spaces.

Enclosed Motor Starters

The NEMA 4X rated enclosure protects these starters from corrosion and washdowns.

Compact Enclosed Motor Starters

Sized to fit in tight spaces, these starters have a shorter height and narrower depth than most other starters.

Enclosed Heavy Duty Motor Starters

Housed in a durable steel enclosure.

Heavy Duty Motor Starters

Sealed coils protect these switches against moisture, heat, dirt, and mechanical and thermal stress.

Enclosed Reversing Motor Starters

Rated NEMA 4X, these enclosed starters are protected from corrosion and washdowns.

Reversing Motor Starters

Use these starters with motors that run forward and backward, such as motors for conveyor belts.

Energy-Saving Motor Starters

Save electricity and extend motor life by reducing the motor's starting current.

Manual Motor Starters

Enclosed Heavy Duty Build-Your-Own
Manual Motor Starters

Housed in a durable steel enclosure.

Heavy Duty Build-Your-Own Manual Motor Starters

Combine a switch and a thermal overload element to build a starter that can handle high-current-rated motors. Also known as a NEMA starter.

Manual Motor Starters

Operated by hand, these starters are more compact than electrically actuated motor starters; use them when multiple motor circuits are housed in one panel.

Build-Your-Own Manual Motor Starters

Assemble your own motor starter by combining a switch and a thermal overload element.

Motor Switches

Washdown Enclosed Motor Switches

Rated NEMA 4X, these switches are protected from corrosion and washdowns.

Enclosed Motor Switches

These switches are housed in a protective enclosure.

Raintight Enclosed Motor Switches

These switches are rated NEMA 3R for protection from falling water and light splashing.

Motor Switches

Use these switches to turn motors on and off, or with lighting and electric heat circuits. They do not provide overload protection.

Hazardous Location Enclosed Motor Switches

Use these switches where ignitable gas and dust may be present. They're rated Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G for hazardous locations.

Reversing Motor Switches

Use these switches with motors that run forward and backward, such as motors for conveyor belts.

Washdown Reversing Motor Switches

Rated NEMA 4, these switches are protected from washdowns.

Overload Protectors for Motor Starters

Upgrade motor starters that use thermal overload protection with these solid-state overloads—they don't use heating elements, so enclosure ventilation and cooling is not required.

Motor-Starting DIN-Rail Power Supplies

Convert AC voltage to power DC motors, solenoid valves, charging capacitors, and other devices that require large start-up current.

Compact Motor-Starting DIN-Rail Power Supplies

Sized to fit into small and cramped enclosures, these compact power supplies mount onto DIN rails to convert AC to DC voltage. Despite their size, they're designed to power motors, solenoid valves, and other devices that require large start-up current.

Heavy Duty Motor-Starting DIN-Rail Power Supplies

Made of durable components for a long life in demanding conditions, these power supplies convert AC voltage to power DC motors and other devices that require high start-up current.