sdsi55415 lovato star-delta starter inc overload 400V 55kw 75hp 98amp

Why Choose the Lovato SDSI55415 Star Delta Starter?

The Lovato SDSI55415 is a heavy-duty star delta motor starter engineered for reliable reduced-current starting and protection of large three-phase motors in demanding industrial environments. Manufactured by Lovato Electric, this enclosed starter reduces motor startup current and mechanical stress by automatically transitioning from star to delta operation during motor acceleration.

Part of the advanced Lovato SDSI enclosed star delta starter series, the SDSI55415 integrates motor control, overload protection and isolation functionality within a robust IP65-rated mild steel enclosure. It is specifically designed for industrial machinery, compressors, pumps, conveyors, extraction systems and process equipment requiring dependable high-power motor starting.

Supporting motors up to 55 kW with a 400 V AC three-phase supply, the Lovato SDSI55415 delivers efficient motor starting while helping reduce electrical stress on supply systems and extending motor service life in demanding industrial automation applications.

Key Advantages

• Reliable star delta starter for industrial motor applications.
• 55 kW motor power capability suitable for heavy-duty industrial motors.
• Reduces motor starting current and mechanical stress.
• Integrated overload relay and isolator included.
• IP65-rated enclosure suitable for harsh industrial environments.
• Designed for dependable operation in demanding automation systems.

Key Features

• Lovato SDSI enclosed star delta starter series.
• 55 kW rated motor power.
• 98 A maximum motor current.
• 400 V AC three-phase supply.
• Integrated thermal overload protection.
• Built-in isolator for safe maintenance and disconnection.
• IP65-rated mild steel enclosure.
• Suitable for industrial and OEM motor control systems.

Technical Specifications

• Manufacturer: Lovato Electric
• Series: SDSI Star Delta Starters
• Model: SDSI55415
• Product type: Star delta motor starter
• Motor power: 55 kW
• Horsepower rating: 75 HP
• Maximum motor current: 98 A
• Supply voltage: 400 V AC
• Input phases: 3-phase
• Starter functionality: Automatic star delta starting
• Protection rating: IP65
• Enclosure type: Hinged-door mild steel enclosure
• Overload protection: Integrated thermal overload relay
• Isolator: Included
• Dimensions (H × W × D): approx. 500 × 400 × 200 mm
• Standards: IEC/EN 60947-1, IEC/EN 60947-4-1
• Operating temperature: approx. -25 °C to +60 °C

Reduced Current Starting for Industrial Motors

Star delta starters such as the Lovato SDSI55415 reduce the high inrush current associated with direct-on-line motor starting by initially connecting motor windings in a star configuration before automatically switching to delta operation. This helps minimise voltage dips, mechanical stress and thermal loading during startup.

The integrated overload relay protects motors against excessive current conditions while the built-in isolator improves maintenance safety and operational control. Its IP65-rated enclosure provides dependable protection against dust and moisture ingress in demanding industrial environments.

Typical Applications

• Industrial pumps and water treatment systems.
• Large compressors and refrigeration equipment.
• Conveyor and material handling systems.
• Ventilation and HVAC installations.
• Industrial processing machinery.
• OEM automation and motor control systems.

Trusted by Industrial Engineers Worldwide

Lovato enclosed star delta starters are trusted worldwide for dependable motor starting, reduced inrush current and reliable protection across industrial automation and machinery applications.