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. 272-583
Mfr. Part No.LUCA32BL
R 1,965.54
Each
units
18.5 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS stock no. 725-5547
BrandRS PRO
R 5,134.57
Each
units
11 kW Star Delta - 230 V ac IP65 9 → 14 A 3 3P - - Disconnect Switch Not Included 220mm Yes 280mm
RS stock no. 377-684
Mfr. Part No.48SDA2X18 | 48SDA2X18
BrandEaton
R 11,210.42
Each
units
15 kW Star Delta - 415 V ac IP54 - 3 - - - Disconnect Switch Not Included 221.5mm Yes 159.5mm
RS stock no. 665-6277
Mfr. Part No.3RK4353-3PR58-1BA0
BrandSiemens
R 8,210.00
Each
units
5.5 kW DOL - 400 V ac IP54 - 3 3P Manual Yes Circuit Breaker Included 220mm Yes 182mm
RS stock no. 909-4073
BrandRS PRO
R 1,546.27
Each
units
5.5 kW DOL - 415 V IP55 10 → 13 A 3 3PST Manual - Colour RAL 7035 Light Grey, Hand Reset Thermal Overloads, Provision for Remote Control 104mm Yes 174mm
RS stock no. 725-5597
BrandRS PRO
R 11,160.88
Each
units
30 kW Star Delta - 400 V ac IP65 32 → 38 A 3 3P - - Disconnect Switch Included 220mm Yes 280mm
RS stock no. 609-7640
Mfr. Part No.LE1D09Q7
R 1,243.05
Each
units
5.5 kW DOL - 690 V ac IP657 - - - Automatic - - 166mm Yes 88mm
RS stock no. 725-5575
BrandRS PRO
R 6,221.01
Each
units
11 kW Star Delta - 400 V ac IP65 9 → 14 A 3 3P - - Disconnect Switch Included 220mm Yes 280mm
RS stock no. 866-5936
Mfr. Part No.3RA6250-1BB32
BrandSiemens
R 8,067.68
Each
units
0.37 kW DOL - 24 V dc IP20 - 3 3P Automatic, Manual Yes Highly Efficient Power Wiring And Simplified Motor Connection Infeed System, Integrated Functionalities For Fewer Variants and Maximum System Availability, Time and Space Saving Installation In The Control Cabinet 90mm Yes 170mm
RS stock no. 744-7894
Mfr. Part No.LE1M35U722
R 2,450.02
Each
units
4 kW DOL - 240 V ac IP65 - 3 3P Automatic - - 160mm Yes 78mm
RS stock no. 811-0770
Mfr. Part No.1TVC400051S5699
BrandABB
R 4,659.70
Each
units
5 kW DOL - 400 V ac IP55 - 3 - Automatic - - 184mm Yes 184mm
RS stock no. 609-4017
Mfr. Part No.LG7K06M710
R 6,263.35
Each
units
3 kW DOL - 440 V ac IP657 - 3 3P Automatic - - 165mm Yes 175mm
RS stock no. 133-028
Mfr. Part No.48ADS1XRS
BrandEaton
R 2,121.67
Each
units
9 kW DOL - 415 V ac IP54 - 3 - Automatic - - 223mm Yes 141mm
RS stock no. 811-0815
Mfr. Part No.1TVC400224S5699
BrandABB
R 11,556.98
Each
units
22 kW Star Delta - 400 V ac IP55 - 3 - - - - 305mm Yes 284mm
RS stock no. 744-7816
Mfr. Part No.LE1D25U7
R 3,103.74
Each
units
15 kW DOL - 240 V ac IP65 - - - Automatic - - 201mm Yes 101mm
RS stock no. 609-4152
Mfr. Part No.LJ7K09Q714
R 7,775.67
Each
units
4 kW DOL - 400 V ac IP657 - - 3P Automatic - Integral Transformer Included 165mm Yes 175mm
RS stock no. 609-7662
Mfr. Part No.LE1D12V7
R 1,317.20
Each
units
7.5 kW DOL - 690 V ac IP657 - - - Automatic - - 166mm Yes 88mm
RS stock no. 609-4089
Mfr. Part No.LG7K09Q714
R 6,866.93
Each
units
4 kW DOL - 440 V ac IP657 - 3 3P Automatic - - 165mm Yes 175mm
RS stock no. 272-606
Mfr. Part No.LUCA05BL
R 1,728.92
Each
units
3 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS stock no. 823-9824
Mfr. Part No.SDSI15415
BrandLovato
R 11,004.15
Each
units
15 kW Star Delta - 400 V IP65 - 3 - Manual No Isolator Included, Thermal Over Load Relay 300mm Yes 300mm