DOL & Star Delta Starters

A DOL Starter is a Direct-On-line motor starter. Sometimes known as an ’across the line’ starter, this type of motor controller is used as a simple starter for larger electric motors, providing full line voltage to the motor terminals.

At their simplest, DOL Starters act as a stop / start switch for a motor, but DOL starters are often fitted with overload protection devices to prevent short circuits or the motor overheating.

Uses for DOL Starters

DOL Starters are used in a variety of applications where motor driving is required, such as running workshop machinery, large fans or water pumps.

Reversible DOL Starters

The RS Range includes reversible DOL Starters that 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.

Ingress Protection

DOL Starters typically have a moulded plastic body designed to protect the motor starter electrical components from workplace environmental factors. The RS Range includes many DOL starter models that are suitable for the harshest work environments, which is essential when running machinery that results in a dusty environment, such as machine woodworking. There are even ATEX rated DOL starters for environments with explosive risks.

Further Security

Some DOL starters are equipped with securing functions such as key locked buttons. These optional extras are highly useful in preventing accidental or unauthorised activation of a motor, and are available in the RS Range.

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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. 909-4085
BrandRS PRO
R 1,038.87
Each
units
0.75 kW DOL - 240 V IP55 - 1 3PST Manual - Colour RAL 7035 Light Grey, Hand Reset Thermal Overloads, Provision for Remote Control 104mm Yes 174mm
RS stock no. 272-561
Mfr. Part No.LUCA32FU
R 1,778.31
Each
units
18.5 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS stock no. 743-5349
Mfr. Part No.LE1M35B712
R 1,698.77
Each
units
2.2 kW DOL - 24 V ac IP65 - 3 3P Automatic - - 160mm Yes 78mm
RS stock no. 725-5507
BrandRS PRO
R 631.53
Each
units
5.5 kW DOL - 400 V ac IP65 9 → 14 A 3 3P Automatic - Disconnect Switch Not Included 193mm Yes 88mm
RS stock no. 272-404
Mfr. Part No.LUCA12FU
R 1,102.87
Each
units
9 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS stock no. 394-9504
Mfr. Part No.LE1D09V7
R 954.57
Each
units
5.5 kW DOL - 690 V ac IP657 - 3 - Automatic No - 166mm Yes 88mm
RS stock no. 665-6261
Mfr. Part No.3RK4353-3LR58-0BA0
BrandSiemens
R 6,640.00
Each
units
2.2 kW DOL - 400 V ac IP54 - 3 3P Manual - Circuit Breaker Included 220mm Yes 182mm
RS stock no. 609-7505
Mfr. Part No.LC3D12AP7
R 6,147.85
Each
units
11 kW Star Delta - 440 V ac - - - 3P - - Mechanical Interlock Included 124mm - 143mm
RS stock no. 909-4098
BrandRS PRO
R 1,035.34
Each
units
1.5 kW DOL - 240 V IP55 - 1 3PST Manual - Colour RAL 7035 Light Grey, Hand Reset Thermal Overloads, Provision for Remote Control 104mm Yes 174mm
RS stock no. 535-2261
Mfr. Part No.SDAINLM55(110V50HZ120V60HZ)
BrandEaton
R 8,477.73
Each
units
30 kW Star Delta - 110 V ac IP55 - 3 - Automatic - - 85mm - 158mm
RS stock no. 823-9821
Mfr. Part No.SDSI30415
BrandLovato
R 12,097.51
Each
units
30 kW Star Delta - 400 V IP65 - 3 - Manual No Isolator Included, Thermal Over Load Relay 300mm Yes 300mm
RS stock no. 394-9526
Mfr. Part No.LE1D09P7
R 954.57
Each
units
4 kW DOL - 690 V ac IP657 - 3 - Automatic No - 166mm Yes 88mm
RS stock no. 609-7628
Mfr. Part No.LD1LD030M
R 17,769.90
Each
units
55 kW DOL - 690 V ac IP20 - - 3P Automatic - - - - -
RS stock no. 711-6477
Mfr. Part No.MS132-6.3
BrandABB
R 1,216.43
Each
units
2.2 kW DOL - 690 V ac IP20 4 → 6.3 A 1, 3 3P Manual - - 90mm Yes 45mm
RS stock no. 823-9830
Mfr. Part No.SDSI45415
BrandLovato
R 22,452.32
Each
units
45 kW Star Delta - 400 V IP65 - 3 - Manual No Isolator Included, Thermal Over Load Relay 500mm Yes 400mm
RS stock no. 609-7511
Mfr. Part No.LC3D18AB7
R 8,784.96
Each
units
22 kW Star Delta - 24 V ac - - - 3P - - Mechanical Interlock Included 124mm - 144mm
RS stock no. 494-6562
Mfr. Part No.D4E/I2/3P+N(230V50HZ240V60HZ)
BrandEaton
R 1,587.01
Each
units
4 kW DOL - 400 V ac IP65 - 3 3P + N Automatic - - 180mm Yes 100mm
RS stock no. 711-6461
Mfr. Part No.MS132-1.6
BrandABB
R 1,216.94
Each
units
0.55 kW DOL - 690 V ac IP20 1 → 1.6 A 1, 3 3P Manual - Disconnect Switch Included 90mm Yes 45mm
RS stock no. 609-7549
Mfr. Part No.LC3D32AP7
R 12,148.92
Each
units
30 kW Star Delta - 230 V ac - 32 A - 3P - - Mechanical Interlock Included 124mm - 165mm
RS stock no. 711-6470
Mfr. Part No.MS132-10
BrandABB
R 1,335.20
Each
units
4 kW DOL - 690 V ac IP20 - 1, 3 3P Manual - - 90mm Yes 45mm