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.



What is the difference between dol and star delta starters?



Both devices are used to start induction motors however, where partial voltage is applied to each winding of a star delta starter, a DOL has 100% voltage applied. This also applies to the current, a star delta uses one-third of the starting current that a DOL does. Direct on line starters are the most common and simplest starting method, within a motor start-up they also provide the lowest temperature rise. Star delta starters allow for starting the motor at a lower voltage, making them suitable for high inertias.


...
Read more Read less

Filters

Viewing 1 - 7 of 7 products
Results per page
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. 363-7138
Mfr. Part No.190S-DNKD2-DC25C
£107.60
Each
Units
11 kW DOL - 415 V ac - - 3 SP Automatic - Circuit Breaker Included, Contactor Included, Disconnect Switch Included 215mm Yes 45mm
RS Stock No. 363-6905
Mfr. Part No.190S-ANKJ2-CB40C
£204.00
Each
Units
1.5 kW DOL - 415 V ac - - 3 SP Automatic - Circuit Breaker Included, Contactor Included, Disconnect Switch Included 215mm Yes 45mm
RS Stock No. 363-7223
Mfr. Part No.190S-ANKF2-CB63C
£204.00
Each
Units
2.2 kW DOL - 415 V ac - - 3 SP Automatic - Circuit Breaker Included, Contactor Included, Disconnect Switch Included 215mm Yes 45mm
RS Stock No. 363-7194
Mfr. Part No.190S-ANKF2-CB16C
£203.00
Each
Units
0.55 kW DOL - 415 V ac - - 3 SP Automatic - Circuit Breaker Included, Contactor Included, Disconnect Switch Included 215mm Yes 45mm
RS Stock No. 363-6898
Mfr. Part No.190S-ANKJ2-CB25C
£204.00
Each
Units
0.75 kW DOL - 415 V ac - - 3 SP Automatic - Circuit Breaker Included, Contactor Included, Disconnect Switch Included 215mm Yes 45mm
RS Stock No. 363-7043
Mfr. Part No.190S-ANKD2-CB25C
£204.00
Each
Units
0.75 kW DOL - 415 V ac - - 3 SP Automatic - Circuit Breaker Included, Contactor Included, Disconnect Switch Included 215mm Yes 45mm
RS Stock No. 363-7065
Mfr. Part No.190S-ANKD2-CB40C
£204.00
Each
Units
1.5 kW DOL - 415 V ac - - 3 SP Automatic - Circuit Breaker Included, Contactor Included, Disconnect Switch Included 215mm Yes 45mm