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. 177-8930
Mfr. Part No.3RA6400-2DB43
BrandSiemens
TWD14,750.00
Each
units
7.5 kW DOL SIRIUS 690 V IP20 12 A 3 3P - - - 45mm - 165mm
RS Stock No. 202-1708
Mfr. Part No.3RW3038-1BB14
BrandSiemens
TWD25,570.00
Each
units
37 kw Soft Start - 400 V IP00 72 A 3 - - - - - - -
RS Stock No. 719-1803
Mfr. Part No.2900576
TWD6,161.00
Each
units
4 kW - Contactron hybrid motor starter - - - - - - - - - - -
RS Stock No. 744-7800
Mfr. Part No.LE1D18U7
TWD7,450.00
Each
units
10 kW DOL - 240 V ac IP65 - - - Automatic - - 201mm Yes 101mm
RS Stock No. 732-8368
Mfr. Part No.1SFA897111R7000
BrandABB
TWD68,967.00
Each
units
75 kW Soft Start - 600 V IP00, IP20 171 A 3 - - - - 295mm - 130mm
RS Stock No. 175-6695
Mfr. Part No.3RM1102-2AA14
BrandSiemens
TWD8,933.00
Each
units
0.75 kW - SIRIUS - - - - - - - - - - -
RS Stock No. 185-9656
Mfr. Part No.3RW5215-1TC14
BrandSiemens
TWD28,456.00
Each
units
18.5 kW Soft Start - 480 V IP20 25 A 3 - - - - 170mm - 152mm
RS Stock No. 746-4928
Mfr. Part No.3RW3026-1BB14
BrandSiemens
TWD10,144.00
Each
units
11 kW Soft Start - 400 V IP20 25 A 3 - - - - 151mm - 45mm
RS Stock No. 202-1703
Mfr. Part No.3RW3016-1BB04
BrandSiemens
TWD6,653.00
Each
units
4 kw Soft Start - 400 V IP00 9 A 3 - - - - - - -
RS Stock No. 200-3929
Mfr. Part No.3RW5056-2TB14
BrandSiemens
TWD66,931.00
Each
units
110 kW Soft Start - 200 → 480 V IP00 171 A 3 - - - - - - -
RS Stock No. 200-4003
Mfr. Part No.3RW5075-6AB14
BrandSiemens
TWD96,989.00
Each
units
250 kW Soft Start - 200 → 480 V IP00 370 A 3 - - - - - - -
RS Stock No. 203-2515
Mfr. Part No.3RK1903-0AB00
BrandSiemens
TWD3,379.00
Each
units
- - - 500 V IP20 40 A - - - - - - - -
RS Stock No. 185-9712
Mfr. Part No.3RW5243-6TC14
BrandSiemens
TWD98,592.00
Each
units
200 kW Soft Start - 480 V IP00 210 A 3 - - - - 210mm - 202.5mm
RS Stock No. 783-9230
Mfr. Part No.3RM1207-1AA04
BrandSiemens
TWD8,577.00
Each
units
3 kW - SIRIUS - - - - - - - - 141.6mm - 22.5mm
RS Stock No. 917-6446
Mfr. Part No.LTMR08DFM
TWD20,632.00
Each
units
30 W - TeSys T - - - - - - - - - - -
RS Stock No. 177-0976
Mfr. Part No.3RA2110-1AE15-1BB4
BrandSiemens
TWD5,050.00
Each
units
550 W DOL SIRIUS 400 V ac IP20 1.1 → 1.6 A 3 3P - - - 45mm - 96.9mm
RS Stock No. 743-5346
Mfr. Part No.LE1M35B708
TWD4,235.00
Each
units
1.1 kW DOL - 24 V ac IP65 - 3 3P Automatic - - 160mm Yes 78mm
RS Stock No. 200-3979
Mfr. Part No.3RW5074-2TB04
BrandSiemens
TWD89,775.00
Each
units
200 kW Soft Start - 200 → 480 V IP00 315 A 3 - - - - - - -
RS Stock No. 204-8278
Mfr. Part No.TPRSS038
TWD5,451.00
Each
units
18.5 kW DOL TeSys Island 480 V, 690 V IP20 38 A, 40 A 1, 3 3P Automatic - - 121mm No 45mm
RS Stock No. 185-9681
Mfr. Part No.3RW5225-1TC14
BrandSiemens
TWD44,888.00
Each
units
55 kW Soft Start - 480 V IP00 63 A 3 - - - - 185mm - 203mm