ABB 1SFA898118R7000 PSTX720-600-70 Softstarter

The ABB 1SFA898118R7000 is a PSTX720-600-70 softstarter from ABB's advanced PSTX series, designed for controlled starting and stopping of medium to large three-phase motors. With a rated operational current of 720 A and a main circuit voltage range of 208–600 V AC, this softstarter provides smooth, stepless motor acceleration and deceleration, eliminating the mechanical and electrical stresses associated with direct-on-line starting . The PSTX720-600-70 features an integrated bypass that activates after motor startup, reducing energy consumption and heat generation during normal operation . It supports both in-line connection (up to 400 kW at 400 V) and inside-delta connection (up to 710 kW at 400 V), offering flexibility for different motor configurations.