Lovato 51ADX0045B ADX series 45 A three-phase soft starter with a 208–500 V AC operating range, torque control, adjustable current limitation and an integrated bypass contactor for severe-duty asynchronous motor starting.
£2,590.99
The Lovato 51ADX0045B is an advanced three-phase soft starter designed for controlled starting and stopping of asynchronous three-phase motors in demanding industrial applications. As part of the Lovato Electric ADX...B series, it is designed for severe-duty starting applications with starting current up to 5 × Ie.
This soft starter provides torque or voltage ramp starting with current limitation, together with an integrated bypass contactor. Once the motor has completed its start, the built-in bypass helps minimise power dissipation, while integrated motor and starter protection functions support dependable operation in industrial motor-control systems.
With a rated starter current of 45 A, the 51ADX0045B supports IEC motor ratings of 11 kW at 230 V AC, 22 kW at 400 V AC and 30 kW at 500 V AC. Its three-phase 208–500 V AC operating range, adjustable current limitation and comprehensive protection functions make it suitable for demanding machinery and automation applications.
Soft starters such as the Lovato 51ADX0045B progressively control motor starting rather than applying full supply voltage immediately. Its torque or voltage ramp starting modes with current limitation provide controlled acceleration for asynchronous three-phase motors and help manage starting current in severe-duty industrial applications.
The integrated bypass contactor reduces power dissipation once the motor reaches normal operating conditions, while torque ramp, voltage ramp and free-wheel stopping modes provide flexibility for different machinery requirements. Motor overload protection, PTC input, phase monitoring, locked-rotor protection and other integrated functions further support reliable motor operation.
| HS Code | 85371098 |
|---|---|
| Manufacturer | Lovato Electric |
| Series | ADX...B |
| Model | 51ADX0045B |
| Product type | Soft starter |
| Motor type | Asynchronous three-phase |
| Rated starter current | 45 A |
| Rated operating voltage | 208–500 V AC |
| Auxiliary supply voltage | 208–240 V AC |
| Rated frequency | 50 / 60 Hz |
| IEC motor power at 230 V AC | 11 kW |
| IEC motor power at 400 V AC | 22 kW |
| IEC motor power at 500 V AC | 30 kW |
| Number of controlled phases | 3 |
| Built-in bypass | Yes |
| Cooling system | Natural |
| Display | Backlit LCD, 2 × 16 characters |
| Starting method | Torque or voltage ramp with current limitation |
| Stopping method | Torque ramp, voltage ramp or free-wheel stop |
| Braking method | DC dynamic braking with external relay |
| Digital inputs | 3 |
| Analogue inputs | 1 |
| Digital outputs | 4 |
| Analogue outputs | 1 |
| Operating temperature | -10 to +55°C |
| Protection rating | IP20 |
| Pollution degree | 3 |
| Mounting type | Screw fixing |
| Dimensions (W × H × D) | 157 × 372 × 223 mm |
| Weight | 9.24 kg |
The 51ADX0045B is designed for controlled starting and stopping of three-phase asynchronous motors, including severe-duty applications requiring current limitation and torque control.
The Lovato 51ADX0045B has a rated starter current of 45 A.
Under its IEC ratings at up to 40°C, the 51ADX0045B is rated for 11 kW at 230 V AC, 22 kW at 400 V AC and 30 kW at 500 V AC.
Yes. The 51ADX0045B includes an integrated bypass contactor, helping minimise power dissipation once the motor has completed its start.
The soft starter supports torque or voltage ramp starting with current limitation and provides torque ramp, voltage ramp and free-wheel stopping modes, as well as dynamic DC braking with an external relay.
Lovato Electric ADX soft starters provide advanced starting and stopping control for three-phase asynchronous motors, combining torque control, adjustable current limitation, integrated motor protection and bypass technology for demanding industrial applications.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...