Motor Speed Inverters | McMaster-Carr

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43 Products

Reversing Enclosed AC to DC Motor Speed Controls

Use these controls with motors that run forward and backward, such as motors for conveyor belts. They convert AC input voltage into DC output voltage and control the speed of permanent-magnet DC motors. Housed in a durable steel enclosure.

Heat Sinks—A heat sink (sold separately) is required with outputs greater than 5 amps.

	Speed Controls													Heat Sinks
	Power, hp (Input Voltage/Output Voltage)	Current, amp	Ht.	Wd.	Wire Connection	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Environment	Enclosure Rating	Certification		Each		Each
Single-Phase Input







				Reversing Motor

				1/8 to 1 (115V AC/0V DC to 90V DC) 1/4 to 2 (230V AC/0V DC to 180V DC)	10	8"	6"	Screw Terminal	Yes	0.19" (3)	On/Off Switch	Indoor Only	NEMA 1	UL Listed C-UL Listed	7793K52	0000000	7793K55	0000000

Enclosed AC to DC Motor Speed Controls

Housed in a durable steel enclosure, these controls convert AC input voltage into DC output voltage and control the speed of permanent-magnet DC motors.

Heat Sinks—A heat sink (sold separately) is required with outputs greater than 5 amps.

	Speed Controls													Heat Sinks
	Power, hp (Input Voltage/Output Voltage)	Current, amp	Ht.	Wd.	Wire Connection	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Environment	Enclosure Rating	Certification		Each		Each
Single-Phase Input







				Nonreversing Motor

				1/8 to 1 (115V AC/0V DC to 90V DC) 1/4 to 2 (230V AC/0V DC to 180V DC)	10	8"	6"	Screw Terminal	Yes	0.19" (3)	On/Off Switch	Indoor Only	NEMA 1	UL Listed C-UL Listed	7793K51	0000000	7793K55	0000000

AC to DC Motor Speed Controls

Convert AC input voltage into DC output voltage and control the speed of permanent-magnet DC motors.

Heat Sinks—A heat sink (sold separately) is required with outputs greater than 5 amps.

	Speed Controls										Heat Sinks
	Power, hp (Input Voltage/Output Voltage)	Current, amp	Ht.	Wd.	Wire Connection	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Certification		Each		Each
Single-Phase Input







				Nonreversing Motor

				1/8 to 1 (115V AC/0V DC to 90V DC) 1/4 to 2 (230V AC/0V DC to 180V DC)	10	3.6"	4.3"	Screw Terminal	Yes	0.19" (6)	UL Listed C-UL Listed	7793K12	0000000	7793K65	000000

Low-Voltage DC Motor Speed Controls

Control the speed of low-voltage permanent-magnet DC motors. These controls accept DC input voltage and supply a variable DC output voltage. Set a minimum and maximum speed and adjust the current limit on these controls. Operate controls manually or remotely with an electrical signal.

Wd.	Wire Connection	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Certification		Each







Nonreversing Motor

1/6 (12V DC/0V DC to 12V DC) 1/6 to 1/3 (24V DC/0V DC to 24V DC)	16	6.9"	4.4"	Screw Terminal	Yes	0.19" (6)	Overload Protection	C-UL Listed	7729K13	0000000


3/4 (12V DC/0V DC to 12V DC) 3/4 to 1 (24V DC/0V DC to 24V DC)	60	7.8"	6.9"	Screw Terminal	Yes	0.19" (6)	Overload Protection	C-UL Listed	7729K11	000000

Programmable Three-Phase AC Motor Speed Controls

Set these controls to automatically adjust motor speed. Wire a potentiometer (not included) for remote manual control.

				Output
	Power, hp	Input Voltage, V AC	Current, amp	Voltage, V AC	Freq., Hz	Input Signal	Ht.	Wd.	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Environment	Enclosure Rating	Certification		Each
Single-Phase Input







				Reversing Motor

				1	115/230	4.2	0 to 230	0 to 500	0 to 10V DC, 4 to 20 mA	7.5"	3.9"	No	0.22" (4)	—	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K49	0000000


				1 1/2	115/230	6	230	0 to 120	0 to 10V DC, 4 to 20 mA	7.5"	3.9"	Yes	0.2" (4)	Thermal Overload Protection	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K43	000000
				3	200 to 240	9.6	0 to 230	0 to 500	0 to 10V DC, 4 to 20 mA	7.5"	3.9"	No	0.22" (4)	—	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K22	000000


				Single-Phase Input/Three-Phase Input







								Reversing Motor

								2	200 to 240	7	0 to 230	0 to 500	0 to 10V DC, 4 to 20 mA	7.5"	3.9"	No	0.22" (4)	—	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K24	000000


								Three-Phase Input







												Reversing Motor

												1	200 to 240	4.2	0 to 230	0 to 500	0 to 10V DC, 4 to 20 mA	7.5"	3.9"	No	0.22" (4)	—	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K47	000000


												1	400 to 480	2.1	400 to 480	0 to 120	0 to 10V DC, 4 to 20 mA	7.5"	3.89"	No	0.21" (4)	—	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K27	000000
												3	200 to 240	9.6	0 to 230	0 to 500	0 to 10V DC, 4 to 20 mA	7.5"	3.9"	No	0.22" (4)	—	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K48	000000
												5	200 to 240	18	200 to 240	0 to 500	0 to 10V DC, 4 to 20 mA	10.75"	5.08"	No	0.24" (4)	Thermal Overload Protection	Indoor Only	—	UL Listed C-UL Listed CE Marked	7786K26	00000000
												5	400 to 480	8.2	400 to 480	0 to 500	0 to 10V DC, 4 to 20 mA	7.5"	3.9"	No	0.22" (4)	—	Wet, Indoor Only	NEMA 1, IP31	UL Listed C-UL Listed CE Marked	7786K46	000000

Reversing Washdown Enclosed AC to DC Motor Speed Controls

Use these controls with motors that run forward and backward, such as motors for conveyor belts. They have a NEMA 4X rated enclosure to withstand corrosion and washdowns. Use them to convert AC input voltage into DC output voltage and control the speed of permanent-magnet DC motors.

	Wd.	Wire Connection	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Environment	Enclosure Rating	Certification		Each
Single-Phase Input







	Reversing Motor

	1/8 to 1 (115V AC/0V DC to 90V DC) 1/4 to 2 (230V AC/0V DC to 180V DC)	10	7.5"	5.63"	Screw Terminal	Yes	0.19" (4)	On/Off Switch	Corrosive, Outdoor, Washdown, Wet, Dusty	NEMA 4X	UL Listed C-UL Listed	7793K64	0000000

DIN-Rail Mount Programmable Three-Phase AC Motor Speed Controls

Mount these controls to DIN rail inside a control panel. Set them to automatically adjust motor speed. Wire a potentiometer (not included) for remote manual control.

				Output
	Power, hp	Input Voltage, V AC	Current, amp	Voltage, V AC	Freq., Hz	Input Signal	Ht.	Wd.	For DIN Rail Ht., mm	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Certification		Each
Single-Phase Input







				Reversing Motor

				1/2	100 to 120	3	115	0 to 400	0 to 10V DC, 4 to 20 mA	5.98"	2.83"	35	No	0.2" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K651	0000000


				1	100 to 120	4.8	115	0 to 400	0 to 10V DC, 4 to 20 mA	8.66"	4.29"	35	No	0.22" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K652	000000
				1	200 to 240	4.8	230	0 to 400	0 to 10V DC, 4 to 20 mA	5.98"	2.83"	35	No	0.2" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K658	000000
				2	200 to 240	7.8	230	0 to 400	0 to 10V DC, 4 to 20 mA	8.66"	4.29"	35	No	0.2" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K655	000000
				3	200 to 240	11	230	0 to 400	0 to 10V DC, 4 to 20 mA	8.66"	4.29"	35	No	0.22" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K656	00000000


				Three-Phase Input







								Reversing Motor

								1	200 to 240	4.8	230	0 to 400	0 to 10V DC, 4 to 20 mA	5.98"	2.83"	35	No	0.2" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K657	000000


								1	380 to 480	2.2	400	0 to 400	0 to 10V DC, 4 to 20 mA	5.98"	2.83"	35	No	0.2" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K762	000000
								2	200 to 240	7.8	230	0 to 400	0 to 10V DC, 4 to 20 mA	5.98"	2.83"	35	No	0.2" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K659	000000
								3	200 to 240	11	230	0 to 400	0 to 10V DC, 4 to 20 mA	8.66"	4.29"	35	No	0.22" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K761	000000
								3	380 to 480	5.6	400	0 to 400	0 to 10V DC, 4 to 20 mA	5.98"	2.83"	35	No	0.2" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K763	000000
								5	380 to 480	7.6	400	0 to 400	0 to 10V DC, 4 to 20 mA	8.66"	4.29"	35	No	0.22" (4)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K764	000000
								7 1/2	380 to 480	12	400	0 to 400	0 to 10V DC, 4 to 20 mA	8.66"	4.29"	35	No	0.22" (2)	Thermal Overload Protection	UL Listed C-UL Listed CE Marked	7786K765	00000000

Washdown Programmable Three-Phase AC Motor Speed Controls

Rated NEMA 4, these controls are protected from washdowns. Set them to automatically adjust motor speed. Wire a potentiometer (not included) for remote manual control.

NEMA 12 Enclosure Rating—Controls rated NEMA 12 also protect against splashes of oil and coolant when used indoors only.

				Output
	Power, hp	Input Voltage, V AC	Current, amp	Voltage, V AC	Freq., Hz	Input Signal	Ht.	Wd.	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Environment	Enclosure Rating	Certification		Each
Single-Phase Input







				Reversing Motor

				1	200 to 240	4.2	200 to 240	0 to 120	0 to 10V DC, 4 to 20 mA	8"	6.5"	No	0.25" (4)	—	Corrosive, Oily, Outdoor, Washdown, Wet, Dusty	NEMA 4, NEMA 12, IP65	UL Listed C-UL Listed CE Marked	7786K72	0000000


				Single-Phase Input/Three-Phase Input







								Reversing Motor

								2	200 to 240	7	200 to 240	0 to 500	0 to 10V DC, 4 to 20 mA	8"	6.28"	Yes	0.2" (4)	Thermal Overload Protection	Outdoor, Washdown, Wet, Dusty	NEMA 4, IP65	UL Listed C-UL Listed CE Marked	7786K39	000000


								Three-Phase Input







												Reversing Motor

												2	400 to 480	3.4	400 to 480	0 to 500	0 to 10V DC, 4 to 20 mA	8"	6.28"	Yes	0.2" (4)	Thermal Overload Protection	Outdoor, Washdown, Wet, Dusty	NEMA 4, IP65	UL Listed C-UL Listed CE Marked	7786K36	00000000


												3	400 to 480	4.8	400 to 480	0 to 500	0 to 10V DC, 4 to 20 mA	8"	6.28"	Yes	0.2" (4)	Thermal Overload Protection	Corrosive, Outdoor, Washdown, Wet, Dusty	NEMA 4, IP65	UL Listed C-UL Listed CE Marked	7786K38	00000000

Washdown Enclosed AC to DC Motor Speed Controls

A NEMA 4X rated enclosure protects these controls from corrosion and washdowns. They convert AC input voltage into DC output voltage and control the speed of permanent-magnet DC motors.

	Wd.	Wire Connection	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Environment	Enclosure Rating	Certification		Each
Single-Phase Input







	Nonreversing Motor

	1/8 to 1 (115V AC/0V DC to 90V DC) 1/4 to 2 (230V AC/0V DC to 180V DC)	10	7.5"	5.63"	Screw Terminal	Yes	0.19" (4)	On/Off Switch	Corrosive, Outdoor, Washdown, Wet, Dusty	NEMA 4X	UL Listed C-UL Listed	7793K63	0000000

Three-Phase AC Motor Speed Controls

Vary the speed of three-phase AC motors. Mount these controls inside a machine or control cabinet. They’re often used in packaging machines, conveyors, and vacuum equipment. Operate controls manually or remotely with an electrical signal.

			Output
	Power, hp	Input Voltage, V AC	Voltage, V AC	Freq., Hz	Ht.	Wd.	Mounting Fasteners Included	Mounting Hole Dia. (No. of)	Features	Certification		Each
Single-Phase Input







				Reversing Motor

				1/2	115/230	230	0 to 120	3"	4.3"	Yes	0.19" (6)	Maximum Speed Setting, Run and Jog Modes, Torque Boost	UL Listed C-UL Listed	6488K21	0000000


				1	115/230	230	0 to 120	4.4"	6.9"	Yes	0.19" (6)	Maximum Speed Setting, Run and Jog Modes, Torque Boost	UL Listed C-UL Listed	6488K22	000000

Input Adapters

Input Signal		Each
0 to 5V DC, 0 to 10V DC, 4 to 20 mA	6488K31	0000000

Stepper Motor Controller/Drives

Tell your stepper motor how far and fast to go by adding a controller and drive to your system. A controller is similar to a PLC—they store and run programs and send signals to a drive. These controllers have commands specifically for stepper motors such as number of steps and direction. The drive delivers power to the motor based on the signals from the controller.

Simplify setup with these single units. The controller and drive are combined, so you can determine all your settings from one device including number of steps, direction, and step resolution. They have multiple inputs and outputs to communicate with more than just a motor. Connect sensors and switches or link multiple controllers together to coordinate movements between motors.

Choose a controller/drive rated at or below your motor’s maximum current.

Encoder Compatible—Encoder-compatible controller/drives are best when relative positioning is critical, such as coordinating motion in a multi-axis system. They connect to an encoder (not included), which monitors the position of the motor's shaft and reports back to the controller.

Step Resolution—Step resolution determines the size of the step a motor takes. For example, setting a _1/128 step resolution on your controller/drive divides one full step into 128 smaller steps. The smaller the steps your motor takes the more smoothly and precisely it will move.

					No. of Inputs/Outputs			Overall
Current per Phase, amp	Voltage	Step Resolution	No. of Step Resolution Settings	Max. Step Freq., MHz	Digital (Input)	Digital (Output)	For Stepper Motor Polarity	Lg.	Wd.	Ht.	Includes	Features		Each
0.1 to 6	12V DC to 48V DC	1 to 1/256	25,501	2	8	4	Bipolar	2.4"	3.9"	0.9"	I/O Cable	—	6627T93	0000000
0.1 to 10	24V DC to 80V DC	1 to 1/256	25,501	2	8	4	Bipolar	3"	5"	1.75"	—	Encoder Compatible	6627T916	000000
0.5 to 6	94V AC to 135V AC	1 to 1/256	25,501	2	7	3	Bipolar	4.7"	6.4"	2.3"	—	—	6627T917	00000000

Stepper Motor Drives

Tell your stepper motor how far and fast to go by adding a controller and drive to your system. A controller (sold separately) is similar to a PLC—it stores and run programs and send signals to a drive. The drive delivers power to the motor based on the signals from the controller.

Choose a drive rated at or below your motor's maximum current.

Step Resolution—Step resolution determines the size of the step a motor takes. For example, setting a _1/128 step resolution on your drive divides one full step into 128 smaller steps. The smaller the steps your motor takes the more smoothly and precisely it will move.

Number of Step Resolution Settings—Drives can be set to different step resolutions. The higher the number of step resolution settings, the greater the flexibility you have for determining the size of the motor’s step.

							Overall
Current per Phase, amp	Voltage	Step Resolution	No. of Step Resolution Settings	Max. Step Freq., MHz	For Stepper Motor Polarity	Wire Connection	Lg.	Wd.	Ht.		Each
0.3 to 2.2	12V DC to 48V DC	1, 1/2, 1/10, 1/25, 1/64, 1/100	6	2	Bipolar	Screw Terminal	2.6"	3.7"	0.8"	6627T911	0000000
2.35 to 8	24V DC to 75V DC	1, 1/2, 1/10, 1/25, 1/64, 1/100	6	2	Bipolar	Screw Terminal	3.3"	4.7"	1.3"	6627T912	000000
0.4 to 8	90V AC to 240V AC	1, 1/2, 1/4, 1/5, 1/8, 1/10, 1/16, 1/20, 1/25, 1/32, 1/40, 1/50, 1/64, 1/100, 1/125, 1/128	16	2	Bipolar	Screw Terminal	4.7"	7"	2.1"	6627T914	000000