Carlo Gavazzi RSBT4016EV21S258 three-phase compressor soft starter with 16 A rated current, alarm relay output and integrated bypass for scroll compressor motor starting control.
£317.27
The Carlo Gavazzi RSBT4016EV21S258 is a compact three-phase soft starter for scroll compressors designed to reduce starting current and provide smooth acceleration of compressor motors in HVAC, refrigeration and industrial cooling applications. As part of the advanced Carlo Gavazzi RSBT soft starter series, it provides reliable compressor starting control with integrated bypass technology and alarm relay output for improved system monitoring.
This soft starter helps reduce electrical inrush current, mechanical stress and vibration during compressor startup. The RSBT series is designed for simple integration into control panels with DIN rail mounting, internal supply and three-phase compressor control functionality.
With a rated current of 16 A, an operating voltage range of 187–440 V AC and a 110–400 V AC control voltage, the RSBT4016EV21S258 is suitable for three-phase scroll compressor applications requiring dependable starting performance and alarm indication capability.
Soft starters such as the Carlo Gavazzi RSBT4016EV21S258 control the initial current supplied to compressor motors during startup. By limiting starting current and providing controlled acceleration, they help improve system reliability while reducing stress on electrical and mechanical components.
The RSBT series is specifically developed for three-phase scroll compressor applications. Its integrated bypass function, compact construction and alarm relay capability allow reliable integration into HVAC systems, refrigeration equipment and industrial automation panels.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | RSBT Scroll Compressor Soft Starters |
| Model | RSBT4016EV21S258 |
| Product type | Three-phase compressor soft starter |
| Rated operational current | 16 A |
| Operating voltage | 187–440 V AC |
| Control voltage | 110–400 V AC |
| Input phases | 3-phase |
| Frequency | 50 / 60 Hz |
| Rated motor power at 230 V AC | 4 kW |
| Rated motor power at 400 V AC | 7.5 kW |
| Starting method | Current limiting soft start |
| Bypass | Integrated internal bypass relay |
| Alarm output | Relay output |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| Dimensions (W × H × D) | 45 × 125 × 103.5 mm |
This soft starter is designed to control the starting of three-phase scroll compressors by reducing starting current and mechanical stress.
The RSBT4016EV21S258 has a rated operational current of 16 A.
The RSBT4016EV21S258 operates from a 187–440 V AC three-phase supply with a 110–400 V AC control voltage.
Yes, the RSBT4016EV21S258 includes a relay output for alarms to support system monitoring.
The soft starter is typically installed inside HVAC control panels, compressor cabinets and industrial electrical enclosures using DIN rail mounting.
Carlo Gavazzi RSBT soft starters are used by HVAC manufacturers and automation engineers to provide reliable compressor starting, reduced electrical stress and efficient system operation.
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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...