51ADX0085B - SOFT STARTER ADX0085B

Why Choose the Lovato 51ADX0085B Soft Starter?

The Lovato 51ADX0085B is a high-performance ADX series soft starter designed for controlled starting and stopping of three-phase asynchronous motors in demanding industrial and commercial applications. As part of the Lovato Electric ADX...B soft starter range, it is engineered for severe-duty motor starting where reduced inrush current, smooth acceleration and reliable motor protection are required.

This soft starter features an integrated bypass contactor, helping reduce heat dissipation and improve operating efficiency once the motor has reached full speed. Its advanced control functions support starting with current limit, torque control, kick start, dynamic braking, motor current thermal protection, PTC input, event logging and RS232 communication.

With a rated starter current of 85 A, a three-phase rated operational voltage of 208-500 V AC and motor ratings up to 45 kW at 400 V AC or 55 kW at 500 V AC, the 51ADX0085B is ideal for pumps, fans, compressors, conveyors and industrial machinery where dependable soft starting is required.

Key Advantages

• Advanced soft starter for three-phase asynchronous motors.
• 85 A rated starter current for demanding industrial motor control applications.
• 45 kW motor rating at 400 V AC and 55 kW at 500 V AC.
• 208-500 V AC rated operational voltage for flexible installation.
• Integrated bypass contactor for efficient running operation.
• Designed for severe-duty starting with starting current up to 5 x Ie.

Key Features

• Lovato Electric ADX...B soft starter series.
• 85 A rated starter current.
• Three-phase 208-500 V AC rated operational voltage.
• 208-240 V AC rated supply voltage.
• 50/60 Hz rated frequency.
• Integrated bypass contactor for reduced heat dissipation.
• Motor current thermal protection and torque control functions.
• IP20 protection rating for panel or enclosure installation.

Technical Specifications

• Manufacturer: Lovato Electric
• Series: ADX...B Soft Starters
• Model: 51ADX0085B
• Product type: Soft starter
• Control type: Advanced three-phase control
• Motor type: Three-phase asynchronous motor
• Number of controlled phases: 3
• Rated starter current: 85 A
• Rated operational voltage: 208-500 V AC
• Rated supply voltage: 208-240 V AC
• Rated frequency: 50 / 60 Hz
• IEC motor power at 230 V: 22 kW
• IEC motor power at 400 V: 45 kW
• IEC motor power at 500 V: 55 kW
• UL motor rating at 220-240 V: 30 HP
• UL motor rating at 380-415 V: 50 HP
• Duty type: Severe duty, starting current 5 x Ie
• Bypass contactor: Integrated
• Torque control: Yes
• Motor overload protection: Integrated
• Additional functions: Current limit, kick start, dynamic braking, PTC input, event log, RS232
• Display: Integrated display
• Protection rating: IP20
• Mounting type: Screw mounting / panel mounting
• Dimensions (H x W x D): approx. 534 x 250 x 157 mm
• Maximum operating temperature: 55 °C without derating
• Package dimensions: approx. 550 x 165 x 270 mm
• GTIN / EAN: 8013975068250
• HS Code: 85371098
• Standards: IEC/EN 60947-1, IEC/EN 60947-4-2

Reliable Soft Starting for Industrial Motors

Soft starters such as the Lovato 51ADX0085B gradually increase motor voltage during start-up to limit inrush current and reduce mechanical shock. This helps protect motors, couplings, belts, pumps and driven machinery from the stress associated with full-voltage starting.

The integrated bypass contactor improves efficiency during normal operation by bypassing the power electronics once the motor is running at speed. Combined with built-in motor protection, torque control and event logging, the ADX...B series provides a reliable solution for demanding motor starting applications.

Typical Applications

• Pumps and water treatment systems.
• Fans, blowers and ventilation equipment.
• Compressors and process machinery.
• Industrial conveyors and material handling systems.
• Packaging and production machinery.
• General three-phase motor starting applications.

Trusted by Industrial Motor Control Engineers

Lovato Electric soft starters are widely used by panel builders, maintenance engineers and industrial automation specialists for reliable motor starting, reduced mechanical stress and efficient control of three-phase motor applications.