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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Rincian Komponen Brand Stock Power Rating Range Motor Starter Type Voltage Rating IP Rating Current Rating Phase Number of Poles Motor Starter Functionality Reversibility Additional Features Overall Length Overall Width Overall Depth Series Mounting Type Standards Met
Siemens 7.5 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 351,17
  • Each
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Siemens 2 7.5 kW SIRIUS DOL 690 V IP20 12 A 3 3 - - - 45mm 165mm 137.5mm 3RA6120 DIN Rail -
Siemens 3 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 330,31
  • Each
  • Compare
Siemens 1 3 kW SIRIUS DOL 690 V IP20 4 A 3 3 - - - 45mm 165mm 137.5mm 3RA6120 DIN Rail -
3DI/LC module (connecting terminal)
  • S$ 81,01
  • Each
  • Compare
Siemens 0 - Simatic - - IP20 9 mA - - - - - 30mm 42.3mm 54.5mm 3RK1908 Plug-In -
Additional mechanical fixing for BaseUni
  • S$ 26,95
  • Each
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Siemens 0 - Simatic - - IP20 - - - - - - 30mm 13.5mm 26mm 3RK1908 Plug-In -
BU F-DI with 400 V infeed
  • S$ 184,28
  • Each
  • Compare
Siemens 0 - Simatic - 500 V ac IP20 32 A - 3 - - - 35.3mm 75mm 215mm 3RK1908 DIN Rail -
BU F-DI without infeed
  • S$ 172,80
  • Each
  • Compare
Siemens 0 - Simatic - 500 V ac IP20 32 A - 3 - - - 35.3mm 75mm 215mm 3RK1908 DIN Rail -
BU with 24 V and 400 V infeed
  • S$ 161,85
  • Each
  • Compare
Siemens 0 - Simatic - 500 V ac IP20 32 A - 3 - - - 35.3mm 75mm 215mm 3RK1908 DIN Rail -
BU with 24 V infeed
  • S$ 142,21
  • Each
  • Compare
Siemens 0 - Simatic - 500 V ac IP20 32 A - 3 - - - 35.3mm 75mm 215mm 3RK1908 DIN Rail -
BU with 400 V infeed
  • S$ 152,98
  • Each
  • Compare
Siemens 0 - Simatic - 500 V ac IP20 32 A - 3 - - - 35.3mm 75mm 215mm 3RK1908 DIN Rail -
BU without infeed
  • S$ 122,39
  • Each
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Siemens 0 - - - - - - - - - - - - - - - - -
BaseUnit cover 30
  • S$ 25,21
  • Each
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Siemens 0 - - - - - - - - - - - - - - - - -
Siemens 0.25 kW 3 DOL Starter, 48 → 500 V ac, 3 Phase, IP20
  • S$ 568,48
  • Each
  • Compare
Siemens 0 0.25 kW Simatic - 48 → 500 V ac IP20 1 A 3 3 - Yes - 30mm 166.9mm 142mm 3RK1308 Plug-In -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 530,23
  • Each
  • Compare
Siemens 0 15 kW SIRIUS DOL 690 V IP20 32 A 3 3 - - - 45mm 165mm 137.5mm 3RA6120 DIN Rail -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 542,40
  • Each
  • Compare
Siemens 0 15 kW SIRIUS DOL 690 V IP20 32 A 3 3 - - - 45mm 165mm 176mm 3RA6120 DIN Rail -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 822,29
  • Each
  • Compare
Siemens 0 15 kW SIRIUS - 690 V IP20 32 A 3 3 - Yes - 90mm 165mm 137.5mm 3RA6250 DIN Rail -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 530,23
  • Each
  • Compare
Siemens 0 15 kW SIRIUS DOL 690 V IP20 32 A 3 3 - - - 45mm 165mm 148.5mm 3RA6120 DIN Rail -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 542,40
  • Each
  • Compare
Siemens 0 15 kW SIRIUS DOL 690 V IP20 32 A 3 3 - - - 45mm 165mm 176mm 3RA6120 DIN Rail -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 530,23
  • Each
  • Compare
Siemens 0 15 kW SIRIUS DOL 690 V IP20 32 A 3 3 - - - 45mm 165mm 137.5mm 3RA6120 DIN Rail -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 667,57
  • Each
  • Compare
Siemens 0 15 kW SIRIUS DOL 690 V IP20 32 A 3 3 - - - 45mm 165mm 148.5mm 3RA6400 DIN Rail -
Siemens 15 kW 3 DOL Starter, 690 V, 3 Phase, IP20
  • S$ 653,66
  • Each
  • Compare
Siemens 0 15 kW SIRIUS DOL 690 V IP20 32 A 3 3 - - - 45mm 165mm 137.5mm 3RA6400 DIN Rail -
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