Carlo Gavazzi RSE4012-B three phase soft starter, a 12 A AC motor controller designed for controlled starting and stopping of industrial induction motors.
£386.91
The Carlo Gavazzi RSE4012-B is a compact and reliable three-phase AC semiconductor motor controller (soft starter) designed for controlled starting and stopping of three-phase induction motors. As part of the Carlo Gavazzi RSE series motor controller range, it provides smooth acceleration, reduced mechanical stress and improved motor operation in industrial automation applications.
This DIN rail mounted soft starter uses semiconductor control technology with integrated bypass to provide efficient motor management while reducing the current surge associated with direct-on-line starting. The RSE series includes adjustable ramp functions, initial torque adjustment, LED indication and built-in transient overvoltage protection for dependable operation in industrial environments.
With a 12 A rated operating current, a 340–460 V AC operating voltage range and support for three-phase motors up to 5.5 kW at 400 V AC, the RSE4012-B is ideal for compact motor control applications requiring reliable soft starting and stopping.
Soft starters such as the Carlo Gavazzi RSE4012-B control the voltage applied to induction motors during starting and stopping, reducing mechanical shock, electrical stress and peak starting currents. This helps extend motor and machine service life while improving operational reliability.
The RSE series is designed for industrial automation engineers requiring compact motor control solutions. Its adjustable ramp functions, integrated bypass and DIN rail mounting make it suitable for modern electrical control panels and machinery applications.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | RSE Series |
| Model | RSE4012-B |
| Product type | Three-phase soft starter / motor controller |
| Rated operating current | 12 A |
| Rated operating voltage | 340–460 V AC |
| Rated motor power | 5.5 kW at 400 V AC |
| Control voltage | 24–110 V AC/DC and 110–480 V AC |
| Motor type | Three-phase induction motors |
| Mounting type | DIN rail mounting |
| Internal bypass | Yes |
| Protection rating | IP20 |
| Width | 45 mm |
| Height | 82 mm |
| Depth | 102.5 mm |
The RSE4012-B is used for soft starting and stopping three-phase induction motors in industrial automation and motor control applications.
The soft starter supports three-phase motors up to approximately 5.5 kW at 400 V AC.
The Carlo Gavazzi RSE4012-B has a rated operating current of 12 A.
The unit operates with a rated voltage range of 340–460 V AC.
Yes, the RSE4012-B includes an integrated bypass function to improve efficiency after the motor reaches operating speed.
Carlo Gavazzi RSE series soft starters provide reliable motor control solutions for industrial machinery, reducing mechanical stress and improving system performance.
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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...
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...