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Soft starters PST
Soft starters, also known as motor soft starters or reduced voltage starters, are essential devices for controlling the acceleration and deceleration of three-phase induction motors. They limit inrush current and reduce mechanical stress by gradually increasing the voltage applied to the motor. Key technical parameters include rated operational ...
Soft starters, also known as motor soft starters or reduced voltage starters, are essential devices for controlling the acceleration and deceleration of three-phase induction motors. They limit inrush current and reduce mechanical stress by gradually increasing the voltage applied to the motor. Key technical parameters include rated operational current (Ie) from 30A to 1050A, rated operational voltage up to 690V AC, and power ratings from 7.5kW to 710kW. They feature adjustable ramp-up and ramp-down times, current limit settings, and built-in bypass contactors for energy efficiency. Common configurations include open-loop and closed-loop control, with options for torque control and pump cleaning functions. Protection features include motor overload, phase loss, and over-temperature protection. These devices are available in standard and high-performance series, with communication protocols like Modbus RTU, Profibus, and DeviceNet for integration into automation systems.
Soft starters are widely used in industrial environments where smooth motor starting is critical. Typical applications include conveyors, pumps, fans, compressors, crushers, and mixers. They are installed in motor control centers (MCCs), distribution panels, and automation cabinets. Key sectors include water and wastewater treatment, mining, cement, HVAC, food and beverage, and oil and gas. They are particularly beneficial for applications requiring reduced mechanical shock, such as belt conveyors and elevators, or where power supply limitations restrict direct-on-line starting.
Our catalog includes the PST series soft starters, such as PST30, PST50, PST72, PST105, PST142, PST175, PST210, PST260, PST310, PST370, PST470, PST570, PST720, PST840, and PST1050. The product code typically follows the pattern PST[Amperage], e.g., PST30 for 30A rated current. These models cover a wide range of power and current requirements, with options for different control voltages (e.g., 24V DC, 110-240V AC) and mounting configurations (panel or wall mount). Accessories like remote keypads, communication modules, and software tools are also available to enhance functionality.
Partnering with Electric Automation Network ensures access to genuine soft starters at competitive prices with up to 65% discount off list price. We offer fast worldwide shipping, real-time pricing, and detailed technical documentation for each article. Our team of specialized engineers provides personalized technical support to help you select the right soft starter for your application, including sizing, configuration, and troubleshooting. We guarantee fast delivery to minimize downtime and keep your operations running smoothly.
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