Siemens DOL Starters (50Hz (B for 200-400V, W for 415V) -3TW42 90-1A.78 is used to start small Water Pumps, Compressors, Fans and Conveyor Belts. In the case of an asynchronous motor, Such as the 3-phase squirrel-cage motor, The motor will draw a high starting current until it has run up to full speed, Brand-Siemens, Motor Rating (Kw) -7.5, Rated Operating Voltage-415 V, Starter Type-Digital Soft Starter, Packaging Unit-1, Warranty- As per manufacturer's warranty policy.