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. 609-7628
Mfr. Part No.LD1LD030M
TWD53,421.00
Each
units
55 kW DOL - 690 V ac IP20 - - 3P Automatic - - - - -
RS Stock No. 272-583
Mfr. Part No.LUCA32BL
TWD3,783.00
Each
units
18.5 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS Stock No. 272-454
Mfr. Part No.LUCA05FU
TWD2,473.00
Each
units
3 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS Stock No. 909-4082
BrandRS PRO
TWD3,403.00
Each
units
7.5 kW DOL - 415 V IP55 13 → 18 A 3 3PST Manual - Colour RAL 7035 Light Grey, Hand Reset Thermal Overloads, Provision for Remote Control 104mm Yes 174mm
RS Stock No. 272-432
Mfr. Part No.LUCA12BL
TWD3,013.00
Each
units
9 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS Stock No. 725-5516
BrandRS PRO
TWD1,819.00
Each
units
7.5 kW DOL - 230 V ac IP65 13 → 18 A 3 3P Automatic - Disconnect Switch Not Included 193mm Yes 88mm
RS Stock No. 609-7505
Mfr. Part No.LC3D12AP7
TWD14,660.00
Each
units
11 kW Star Delta - 440 V ac - - - 3P - - Mechanical Interlock Included 124mm - 143mm
RS Stock No. 251-2410
Mfr. Part No.LG8K06M7
TWD11,961.00
Each
units
0.06 kW DOL - 400 V ac IP657 - - 3P Automatic Yes Disconnect Switch Included 165mm Yes 175mm
RS Stock No. 251-2432
Mfr. Part No.LG8K09M7
TWD12,141.00
Each
units
1.5 kW DOL - 400 V ac IP657 - - 3P Automatic Yes Disconnect Switch Included 165mm Yes 175mm
RS Stock No. 377-684
Mfr. Part No.48SDA2X18
BrandEaton
TWD22,173.00
Each
units
15 kW Star Delta - 415 V ac IP54 - 3 - - - Disconnect Switch Not Included 221.5mm Yes 159.5mm
RS Stock No. 394-9504
Mfr. Part No.LE1D09V7
TWD3,822.00
Each
units
5.5 kW DOL - 690 V ac IP657 - 3 - Automatic No - 166mm Yes 88mm
RS Stock No. 177-1010
Mfr. Part No.3RA2110-1CA15-1BB4
BrandSiemens
TWD3,845.00
Each
units
750 W DOL SIRIUS 400 V ac IP20 1.8 → 2.5 A 3 3 - - - 45mm - 96.9mm
RS Stock No. 609-7707
Mfr. Part No.LE1M35Q708
TWD3,912.00
Each
units
1.1 kW DOL - 380 V ac IP65 - - 3P Automatic - - 160mm Yes 78mm
RS Stock No. 665-6268
Mfr. Part No.3RK4353-3PR58-0BA0
BrandSiemens
TWD12,998.00
Each
units
5.5 kW DOL - 400 V ac IP54 - 3 3P Manual - Circuit Breaker Included 220mm Yes 182mm
RS Stock No. 184-7099
Mfr. Part No.3RK1908-0AP00-0CP0
BrandSiemens
TWD3,484.00
Each
units
- - Simatic 500 V ac IP20 32 A - 3 - - - 35.3mm - 75mm
RS Stock No. 744-7841
Mfr. Part No.LE1M35N714
TWD3,682.00
Each
units
3 kW DOL - 415 V ac IP65 - 3 3P Automatic - - 160mm Yes 78mm
RS Stock No. 177-0990
Mfr. Part No.3RA2110-1BA15-1BB4
BrandSiemens
TWD3,845.00
Each
units
750 W DOL SIRIUS 400 V ac IP20 1.4 → 2 A 3 3 - - - 45mm - 96.9mm
RS Stock No. 272-561
Mfr. Part No.LUCA32FU
TWD3,170.00
Each
units
18.5 kW DOL - 690 V ac IP40 - 3 3P - - - - - -
RS Stock No. 192-0855
Mfr. Part No.1SBK134037R1400
BrandABB
TWD3,913.00
Each
units
4 kW DOL - 500 V ac IP66 - - - - - - 107mm Yes 230mm
RS Stock No. 609-3907
Mfr. Part No.LG1K065M708
TWD16,188.00
Each
units
1.5 kW DOL - 440 V ac IP657 - - 3P Automatic - Disconnect Switch Included 165mm Yes 175mm