Motor Starters

A motor starter is a device for motor control applications and is used to start and stop a motor. A starter is an electromechanical switch similar to a relay, the main difference being that a starter contains a contactor and overload protection to prevent electrical overloading of the motor.

Types of Motor Starter

  • DOL Starters - Direct On Line (DOL) or across the line starters are the most common general purpose starter. A magnetic contactor connects the full voltage of the power supply directly to the motor with an overload relay for protection against short circuit, energizing the coil pulls the contactors together to close the circuit and start the device. They are used for motors that are only required to run in one direction at a single speed.
  • Reversing DOL Starters - these motor starters can run a motor either forwards or backwards. These three-button starters are particularly useful for conveyor based machinery, where reversing the direction is sometimes necessary.
  • Star Delta Starter - a reduced voltage motor starter designed to control a three-phase induction motor, the windings in this starter are switched between star and delta connections to start the motor. A star delta circuit will have a contactor configuration within the relay of. triple pole (star) and double throw (delta).
  • Soft Starter - typically used to control AC electric motors a soft starter works by helping reduce the torque and load in the power up and electrical current surges that are typical with motors during their start-up phase. It uses solid-state switches to control the voltage as well as the starting current supplied.

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Description Price Power Rating Motor Starter Type Range Voltage Rating IP Rating Current Rating Phase Number of Poles Motor Starter Functionality Reversibility Additional Features Overall Length Enclosure Overall Width
RS Stock No. 420-502
Mfr. Part No.3RW4026-1BB14
BrandSiemens
$813.32
Each
units
11 kW - - 480 V ac IP20 25 A 3 - - - - 154mm - 45mm
RS Stock No. 420-514
Mfr. Part No.3RW4037-1BB14
BrandSiemens
$1,354.82
Each
units
30 kW - - 480 V ac IP00 63 A 3 - - - - 170mm - 55mm
RS Stock No. 420-520
Mfr. Part No.3RW4046-1BB14
BrandSiemens
$1,745.77
Each
units
45 kW - - 480 V ac IP00 80 A 3 - - - - 188mm - 70mm
RS Stock No. 420-524
Mfr. Part No.3RW4038-1BB14
BrandSiemens
$1,572.74
Each
units
37 kW - - 480 V ac IP00 72 A 3 - - - - 170mm - 55mm
RS Stock No. 420-495
Mfr. Part No.3RW4028-1BB14
BrandSiemens
$960.15
Each
units
18.5 kW - - 480 V ac IP20 38 A 3 - - - - 125mm - 45mm
RS Stock No. 746-4921
Mfr. Part No.3RW3028-1BB04
BrandSiemens
$740.11
Each
units
18.5 kW - - 400 V IP20 38 A 3 - - - - 151mm - 45mm
RS Stock No. 420-508
Mfr. Part No.3RW4027-1BB14
BrandSiemens
$801.50
Each
units
15 kW - - 480 V ac IP20 32 A 3 - - - - 154mm - 45mm
RS Stock No. 500-913
Mfr. Part No.3RA6120-1DB32
BrandSiemens
$532.47
Each
units
5.5 kW - SIRIUS - - - - - - - - - - -
RS Stock No. 746-4896
Mfr. Part No.3RW3013-1BB04
BrandSiemens
$332.88
Each
units
1.5 kW - - 400 V IP20 3.6 A 3 - - - - 151mm - 45mm
RS Stock No. 746-4906
Mfr. Part No.3RW3013-1BB14
BrandSiemens
$356.51
Each
units
1.5 kW - - 400 V IP20 3.6 A 3 - - - - 151mm - 45mm
RS Stock No. 746-4928
Mfr. Part No.3RW3026-1BB14
BrandSiemens
$515.10
Each
units
11 kW - - 400 V IP20 25 A 3 - - - - 151mm - 45mm
RS Stock No. 185-9719
Mfr. Part No.3RW5244-6TC14
BrandSiemens
$5,826.01
Each
units
250 kW - - 480 V IP00 250 A 3 - - - - 210mm - 202.5mm
RS Stock No. 185-9680
Mfr. Part No.3RW5225-1TC04
BrandSiemens
$2,273.57
Each
units
55 kW - - 480 V IP00 63 A 3 - - - - 185mm - 203mm
RS Stock No. 200-3973
Mfr. Part No.3RW5073-6TB14
BrandSiemens
$4,059.94
Each
units
160 kW - - 200 → 480 V IP00 250 A 3 - - - - - - -
RS Stock No. 200-3947
Mfr. Part No.3RW5072-2TB14
BrandSiemens
$3,674.24
Each
units
132 kW - - 200 → 480 V IP00 210 A 3 - - - - - - -
RS Stock No. 200-3931
Mfr. Part No.3RW5056-6AB04
BrandSiemens
$3,308.84
Each
units
110 kW - - 200 → 480 V IP00 171 A 3 - - - - - - -
RS Stock No. 200-3985
Mfr. Part No.3RW5074-6AB14
BrandSiemens
$4,425.33
Each
units
200 kW - - 200 → 480 V IP00 315 A 3 - - - - - - -
RS Stock No. 177-0999
Mfr. Part No.3RA2110-1AD15-1BB4
BrandSiemens
$314.64
Each
units
550 W DOL SIRIUS 400 V ac IP20 1.1 → 1.6 A 3 3P - - - 45mm - 154.9mm
RS Stock No. 177-0975
Mfr. Part No.3RA2110-1AE15-1AP0
BrandSiemens
$243.60
Each
units
550 W DOL SIRIUS 400 V ac IP20 1.1 → 1.6 A 3 3P - - - 45mm - 96.9mm
RS Stock No. 200-3954
Mfr. Part No.3RW5072-6TB05
BrandSiemens
$4,059.94
Each
units
132 kW - - 400 → 600 V IP00 210 A 3 - - - - - - -