Motor Controllers

Motor controllers are devices (or groups of devices) that are used to control the start, stop and speed of an electric motor. They can either be manually operated or programmed to work automatically, with possible functions including selecting the rotational direction and speed, regulating or limiting torque, and stopping or starting the motor. A motor controller helps to protect the motor itself from overloading and/or electrical faults. At RS Components, we have a curated range of motor controllers from industry-leading brands such as Electromen OY, Schneider Electric, Siemens, Sprint Electric, and many more.

What types of motor controllers are there?

Motor controllers can be classified by the type of motor is designed to drive, e.g. servo, magnet, series, separately excited, direct current (DC) and alternating current (AC). Motor starters are specialized switching units used with larger motors, and connects the motor terminals directly to the power supply.

One of the widest categories of motor controllers is that of servo controllers, which use position feedback to close the control loop, which provide precise control over a closed loop. Stepper controllers are also popular, used for accurate positioning, rotation angles and speed control in stepper motors through.

What are motor controllers used for?

Motor controllers are used to achieve more accurate control over motor speed, stops and starts than can be achieved with a manual control or mechanical switch. Motor controllers are also capable of controlling motors that exceed the current limitations of a mechanical switch.


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Description Price Phase Control Function Supply Voltage Current Rating Voltage Rating Power Rating Overall Length Overall Width Overall Depth Minimum Operating Temperature Maximum Operating Temperature Priced to Clear IP Rating
RS Stock No. 124-1299
Mfr. Part No.R7D-BP04H
BrandOmron
£584.50
Each
Units
1 - - 7.8 A 200 V ac 400 W 40mm 110.1mm 140mm 0°C +55°C - -
RS Stock No. 124-1300
Mfr. Part No.R7A-FIB104-RE
BrandOmron
£46.37
Each
Units
1 Filter - 4 A 250 V ac - 40mm 44mm 179mm - - - -
RS Stock No. 124-1302
Mfr. Part No.R88A-CRGB001-5CR-E
BrandOmron
£94.35
Each
Units
- - - - - - 1500mm - - - - - -
RS Stock No. 124-1301
Mfr. Part No.R7A-CPB001S
BrandOmron
£80.20
Each
Units
- - - - - - 1000mm - - - - - -
RS Stock No. 124-1298
Mfr. Part No.R7D-BP02HH
BrandOmron
£548.00
Each
Units
1 - - 4.9 A 200 V ac 200 W 40mm 110.1mm 140mm 0°C +55°C - -
RS Stock No. 136-2809
Mfr. Part No.R88D1SN01HECT
BrandOmron
£606.50
Each
Units
1, 3 - 200 → 240 V ac 1 A, 1.8 A 200 → 240 V ac 100 W 185mm 40mm 180mm 0°C +55°C Yes -
RS Stock No. 136-2812
Mfr. Part No.R88D1SN04HECT
BrandOmron
£837.00
Each
Units
1, 3 - 200 240 V 2.7 A, 4.6 A 240 V ac 400 W 185mm 55mm 180mm 0°C +55°C - -
RS Stock No. 136-2811
Mfr. Part No.R88D1SN02HECT
BrandOmron
£786.00
Each
Units
1, 3 - 200 240 V 1.5 A, 2.7 A 240 V ac 200 W 185mm 40mm 180mm 0°C +55°C - -
RS Stock No. 136-2813
Mfr. Part No.R88D1SN08HECT
BrandOmron
£860.00
Each
Units
1, 3 - 200 240 V 4 A, 7.3 A 240 V ac 750 W 215mm 65mm 180mm 0°C +55°C - -