dolsw7.5400 Lovato standard dol starter 7.5kw 18a 400V

Why Choose the Lovato DOLSW7.5400 Direct On-Line Starter with Isolator?

The Lovato DOLSW7.5400 is a durable and reliable direct on-line (DOL) motor starter with integrated isolator designed for efficient control of three-phase motors in industrial and commercial environments. Manufactured by Lovato Electric, this enclosed starter combines dependable motor switching with safe local isolation functionality to simplify maintenance and improve operational safety.

Designed for demanding industrial applications, the DOLSW7.5400 features a rugged insulated enclosure and high-quality switching components engineered for long-term reliability. Its compact construction allows straightforward installation on machinery and industrial systems where reliable motor starting and protection are essential.

With a rated motor power of 7.5 kW, a maximum AC3 operational current of 18 A and a 400 V AC control voltage, the Lovato DOLSW7.5400 is suitable for pumps, compressors, conveyors, fans and general industrial machinery requiring dependable direct-on-line motor starting.

Key Advantages

• Reliable DOL starter with integrated rotary isolator.
• 7.5 kW motor rating suitable for industrial applications.
• 18 A AC3 operational current capability.
• Heavy-duty Lovato BF series contactor for dependable switching performance.
• IP65 / IP68 insulated enclosure suitable for harsh industrial environments.
• Integrated isolator improves maintenance safety and convenience.
• Compatible with RF38 thermal overload relays for motor protection.

Key Features

• Lovato L-Starter DOLSW series.
• 7.5 kW rated motor power.
• 18 A maximum AC3 current.
• 400 V AC control voltage.
• Integrated start/stop controls and rotary isolator.
• Heavy-duty insulated polycarbonate enclosure.
• Designed for use with RF38 overload relays.
• Suitable for three-phase industrial motor control systems.

Technical Specifications

• Manufacturer: Lovato Electric
• Series: L-Starter DOLSW Series
• Model: DOLSW7.5400
• Product type: Direct-on-line starter with isolator
• Rated motor power: 7.5 kW
• Horsepower rating: 10 HP
• Maximum AC3 current: 18 A
• Control voltage: 400 V AC
• Input phases: 3-phase
• Protection rating: IP65 / IP68 enclosure
• Enclosure material: Insulated polycarbonate
• Operating temperature: -25°C to +60°C
• Mounting type: Surface mounting
• Dimensions (H × W × D): approx. 193 × 88 × 134 mm
• Overload relay compatibility: RF38 series
• Compliance: IEC/EN 60947-1, IEC/EN 60947-4-1

Reliable Industrial Motor Starting and Isolation

Direct-on-line starters provide a straightforward and efficient solution for starting three-phase induction motors by applying full supply voltage directly to the motor terminals. This method is widely used where reliable operation and strong starting torque are required.

The integrated isolator fitted to the Lovato DOLSW7.5400 enables safe local disconnection of the motor circuit during servicing and maintenance. Combined with a suitable RF38 thermal overload relay, the starter provides dependable overload protection and long-term operational reliability in industrial applications.

Typical Applications

• Industrial pumps and booster systems.
• Ventilation and extraction equipment.
• Compressors and refrigeration systems.
• Conveyor and material handling systems.
• Water treatment and agricultural installations.
• General industrial machinery and automation systems.

Trusted by Industrial Engineers Worldwide

Lovato enclosed DOL starters are widely trusted by machine builders, panel manufacturers and industrial maintenance engineers for dependable motor starting, safe isolation and long-term industrial reliability.