RSBT is an easy to use soft starter for scroll compressors up to 95Amp nominal current. The unit is equipped with a patented auto-adaptive algorithm that automatically adapts itself to the specific compressor it is controlling ensuring that an optimum inrush current reduction is achieved.

RSBT is a 3-phase controlled solution and is internally bypassed - resulting in less heat dissipation inside the panel. Short Circuit and Overload protection are not provided with the controller and must be procured separately.

User can easily visualize measured values in real-time voltage, current and power consumption (kWh), adjust parameters such as alarm levels and current limitation, start / stop the compressor via serial communications, get specific alarms in real time, and download information via the new integrated MODBUS RTU protocol using RS485 connection to a PC.

Main Technical Features

• Soft starting of 3-phase scroll compressors up to 95 Amp 
• Patented auto-adaptive algorithm for optimum inrush current reduction (No user settings required) 
• 3-Phase controlled solution 
• Integrated bypass relays 
• Internally supplied 
• Short ramp up time: <600 ms 
• Rated operational voltage: RSBT22: 220 VAC RSBT40: 400 VAC RSBT48: 220 - 480 VAC 
• Rated operational current: 16, 25, 32, 55, 70, 95 AAC 
• Over-temperature, Over Current, Locked Rotor protection 
• cULus, CE, CCC, RoHS compliant 
• HP version for multi-compressor systems 
• VDE approved (up to 32 AAC) - for RSBT...HPV models Note: Other models (RSBT22/RSBT40) only VDE approved up to 15Arms