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. 420-508
Mfr. Part No.3RW4027-1BB14
BrandSiemens
TWD15,785.00
Each
units
15 kW Soft Start - 480 V ac IP20 32 A 3 - - - - 154mm - 45mm
RS Stock No. 420-514
Mfr. Part No.3RW4037-1BB14
BrandSiemens
TWD29,462.00
Each
units
30 kW Soft Start - 480 V ac IP00 63 A 3 - - - - 170mm - 55mm
RS Stock No. 420-502
Mfr. Part No.3RW4026-1BB14
BrandSiemens
TWD13,519.00
Each
units
11 kW Soft Start - 480 V ac IP20 25 A 3 - - - - 154mm - 45mm
RS Stock No. 746-4940
Mfr. Part No.3RW4026-1BB04
BrandSiemens
TWD14,619.00
Each
units
11 kW Soft Start - 400 V IP20 25 A 3 - - - - 154mm - 45mm
RS Stock No. 420-524
Mfr. Part No.3RW4038-1BB14
BrandSiemens
TWD30,660.00
Each
units
37 kW Soft Start - 480 V ac IP00 72 A 3 - - - - 170mm - 55mm
RS Stock No. 200-4018
Mfr. Part No.3RW5076-2TB15
BrandSiemens
TWD115,425.00
Each
units
315 kW Soft Start - 400 → 600 V IP00 470 A 3 - - - - - - -
RS Stock No. 200-3960
Mfr. Part No.3RW5073-2AB15
BrandSiemens
TWD90,577.00
Each
units
160 kW Soft Start - 400 → 600 V IP00 250 A 3 - - - - - - -
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. 200-4019
Mfr. Part No.3RW5076-6AB04
BrandSiemens
TWD104,604.00
Each
units
315 kW Soft Start - 200 → 480 V IP00 470 A 3 - - - - - - -
RS Stock No. 200-3961
Mfr. Part No.3RW5073-2TB04
BrandSiemens
TWD82,160.00
Each
units
160 kW Soft Start - 200 → 480 V IP00 250 A 3 - - - - - - -
RS Stock No. 175-6713
Mfr. Part No.3RM1302-3AA14
BrandSiemens
TWD9,621.00
Each
units
0.75 kW - SIRIUS - - - - - - - - - - -
RS Stock No. 783-9218
Mfr. Part No.3RM1007-1AA04
BrandSiemens
TWD7,855.00
Each
units
3 kW - SIRIUS - - - - - - - - 141.6mm - 22.5mm
RS Stock No. 200-4028
Mfr. Part No.3RW5077-2AB05
BrandSiemens
TWD123,441.00
Each
units
355 kW Soft Start - 400 → 600 V IP00 570 A 3 - - - - - - -
RS Stock No. 185-9726
Mfr. Part No.3RW5246-6AC04
BrandSiemens
TWD159,511.00
Each
units
355 kW Soft Start - 480 V IP00 370 A 3 - - - - 210mm - 202.5mm
RS Stock No. 783-9234
Mfr. Part No.3RM1207-1AA14
BrandSiemens
TWD8,577.00
Each
units
3 kW - SIRIUS - - - - - - - - 141.6mm - 22.5mm
RS Stock No. 200-3971
Mfr. Part No.3RW5073-6TB05
BrandSiemens
TWD90,577.00
Each
units
160 kW Soft Start - 400 → 600 V IP00 250 A 3 - - - - - - -
New
RS Stock No. 216-6442
Mfr. Part No.3RA2120-4AA26-0AP0
BrandSiemens
TWD7,028.00
Each
units
0.06 kW - SIRIUS 690 V IP20 200 mA 1, 3 3 - - - - - -
RS Stock No. 200-4020
Mfr. Part No.3RW5076-6AB05
BrandSiemens
TWD115,425.00
Each
units
315 kW Soft Start - 400 → 600 V IP00 470 A 3 - - - - - - -
RS Stock No. 783-9237
Mfr. Part No.3RM1202-1AA14
BrandSiemens
TWD8,577.00
Each
units
3 kW - SIRIUS - - - - - - - - 141.6mm - 22.5mm
RS Stock No. 177-8944
Mfr. Part No.3RA6400-1EB42
BrandSiemens
TWD20,600.00
Each
units
15 kW DOL SIRIUS 690 V IP20 32 A 3 3P - - - 45mm - 165mm