This Altistart 48 soft start/soft stop unit is a controller with 6 thyristors used for torque-controlled soft starting and stopping of three-phase asynchronous motors. It offers soft starting and deceleration functions, along with machine and motor protection functions, as well as functions for communicating with control systems. It works at a rated supply voltage of 230V to 415V AC and up to 660A. Altistart 48 torque control enables starting without mechanical stress and smooth control of hydraulic transitions. With a single acceleration ramp, making adjustments is quick and easy, whatever the load. If connected to the motor supply line, it is suitable for motors with a power rating of up to 355 kW (at 400 volts) for standard applications and 315 kW (at 400 volts) for severe applications. If connected to the motor delta terminals, it is suitable for motors with a power rating of up to 500 kW (at 400 volts) for standard applications and 400 kW (at 400 volts) for severe applications. It weighs 51.4 kg, and its dimensions are 400mm wide, 670mm high, and 300mm deep. It is designed for use in the most common applications for centrifugal machines, pumps, fans, compressors, and conveyors, which are primarily found in the construction, food and beverage, and chemical industries. It complies with the IEC/EN 60947-4-2 standard and is certified by CE, UL, CSA, DNV, C-Tick, GOST, CCC, NOM, SEPRO, and TCF. The Altistart 48 is connected directly to the Modbus bus via its RJ45 connector port. It can also be connected to Ethernet, Fipio, Profibus DP, and DeviceNet networks via a module (bridge or gateway) to be ordered separately. It is designed to be mounted in a vertical position (+/- 10°) on a panel, thanks to 4 fixing holes. Altistart 48 delivers high performance with its Torque Control System (TCS) for controlled starting and deceleration and easy integration in enclosures and control systems. This range also provides continual improvement to your machine's operation by reducing mechanical or hydraulic stress, limiting energy loss and temperature rise, and more.