Motor Controllers | McMaster-Carr

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2,016 Products

Electrical Power, Networking, and Controlling

Motor Speed Controls

Manage the speed of AC and DC motors

37 products

Motor Starters

Turn motors on and off and protect them from current overloads

451 products

Motor Drives

Receive signals from a motor controller and deliver them to your stepper motor

3 products

Motor Controller/Drives

Determine settings such as steps, direction, and step resolution from one device

3 products

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

5 products

Motor Starter Overload Protectors

Upgrade your motor starter protector to use less energy and emit less heat

8 products

Motor Switches

Turn motors, lighting, and electric heat circuits on and off

45 products

Lever Switches

Grip and twist the lever to turn circuits on and off, preventing accidental actuation

29 products

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

251 products

Interface Relays

Isolate input and output circuits to protect PLCs and other controllers

45 products

Timer Relays

Turn machinery on or off after receiving an electrical signal that starts the timer

59 products

Latching Relays

Lock into position so they don't require constant voltage to stay switched

27 products

Infrequent-Cycle Relays

Use with equipment that cycles on and off, such as HVAC systems

147 products

Safety Relays

Monitor circuits and force machines to a safe stop if the relay detects a fault

26 products

Proportional-Control Relays

Gradually adjust output instead of turning on or off

12 products

Power Supplies

Convert your facility's AC voltage to power equipment that runs on DC voltage

33 products

Power Transmission

Servomotors

Create rotary motion with accurate positioning and fine control over speed and torque

97 products

Stepper Motors

The motor shaft turns in small, equal increments for precise positioning

197 products

Electric Motors

Keep machinery and equipment moving with AC or DC power

47 products

Stepper Gearmotors

Stepper motor and gearbox in one for high torque in areas large motors won’t fit

20 products

Electric Gearmotors

A motor and speed reducer in one to slow speed and increase torque in AC- or DC- power applications

52 products

Brakes

Control how much and how quickly your drive system slows down

7 products

Clutch/Brakes

Control when to transmit power with a clutch and when to hold a load in place with a brake

5 products

Clutches

Start and stop the transmission of power to machinery

58 products

Torque Limiters

Keep torque at or below a set limit to control tension or braking or protect machinery from overload

127 products

Speed Reducers

Reduce shaft speed and increase torque while transmitting rotary motion

50 products

Electric Actuators

Push and pull loads with more precise positioning than air and hydraulic cylinders

41 products

Electric Slides

Move parts with precision in electronics, robotics, and other automated processes

86 products