RSBT4032EV21HP is a three-phase controlled soft starter designed for scroll compressors up to 32 Arms nominal current. It features a patented auto-adaptive algorithm that automatically adapts to the specific compressor being controlled, ensuring optimum inrush current reduction without requiring user settings. The unit operates at 400 VAC (340-440 VACrms) with a rated operational current of 32 Arms, assigned compressor rating of 15.0 kW (15.0 HP), and maximum current limit level of 110 Arms. Key features include integrated bypass relays for reduced heat dissipation, short ramp-up time of less than 600 ms, and HP version optimization for multi-compressor systems and high pressure starts. The soft starter includes over-temperature, overcurrent, and locked rotor protection, and is CE compliant with IP20 degree of protection.