DOL Starters - Electrical, Lighting and Power
Direct-on-line (DOL) starters are low-voltage motor control assemblies used aboard ships for starting and stopping fixed-speed motors. A typical assembly includes a contactor, thermal or electronic overload relay, short-circuit protection, control pushbuttons, and an enclosure.
ProShipWorks provides end-to-end support to source and supply DOL Starters for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | DOL Starters |
|---|---|
| Product Category | Electrical, Lighting and Power |
| Product Reference | 534 |
| Brands / Manufacturers | ABB, Schneider Electric, Siemens, Eaton |
| Unit of Measure | Piece or Set |
Key Features
| Key Feature |
|---|
| 1. Full-voltage motor starting |
| 2. Contactor with overload protection |
| 3. Manual or remote start/stop control |
| 4. Under-voltage release and auxiliary contacts |
| 5. Marine-suitable enclosure and corrosion-resistant construction |
Applications of DOL Starters
| Application |
|---|
| 1. Marine pumps, fans, compressors, and ventilation motors |
| 2. Engine-room auxiliary machinery |
| 3. Shipboard electrical power and lighting control panels where motor switching is required |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| AF09–AF96 contactor with MS116 overload relay | ABB |
| TeSys Deca contactor with LRD overload relay | Schneider Electric |
| SIRIUS 3RT2 contactor with 3RU2 overload relay | Siemens |
| DILM contactor with ZB overload relay | Eaton |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| ABB AF09–AF96 | Motor power rating | Up to approximately 45 kW at 400 V AC, depending on selected contactor | kW |
| Schneider TeSys Deca | Utilization category | AC-3 motor switching | — |
| Siemens SIRIUS 3RT2 | Rated operational voltage | Up to 690 | V AC |
| Eaton DILM | Control voltage | Available in various AC and DC coil voltages | — |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | IEC 60947-4-1 applies to contactors and motor starters; IEC 60947-2 applies to circuit-breakers. Shipboard installations may also require IEC 60092-302 and the vessel owner's electrical specification. Certification depends on the complete assembly and configuration. |
|---|---|
| Class Approval | Marine type approval may be available for selected components or complete starter panels from DNV, ABS, Lloyd's Register, Bureau Veritas, and ClassNK. Approval is model-, enclosure-, application-, and installation-specific and must be verified from current certificates. |
Installation, Maintenance & Safety Information
| Installation Notes | Select the starter for motor rated current, voltage, frequency, starting duty, fault level, control voltage, enclosure protection, and ambient temperature. Set the overload relay to the motor nameplate current and connect protective earthing and interlocks according to the approved ship electrical drawings. |
|---|---|
| Maintenance Tips | Inspect terminals, contactor contacts, overload settings, enclosure seals, cable glands, and signs of overheating or corrosion. Test start/stop, emergency-stop, overload trip, and remote-control functions during scheduled maintenance. Replace worn contacts or damaged overload relays. |
| Safety Notes | Isolate, lock out, and verify absence of voltage before servicing. DOL starting produces high inrush current and mechanical shock; confirm that the motor, shaft-driven equipment, generator, and distribution system are suitable. Use correctly rated short-circuit protection and maintain required electrical clearances. |
Request a Quote for DOL Starters
Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.
- Vessel name and IMO number
- ETA / vessel schedule
- Berth or vessel location
- Required quantity
- Preferred delivery window
- Shipping agent contact details
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