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Soft starters PSS
Soft starters PSS: Advanced Motor Starting Solutions for Industrial Automation
Soft starters PSS are electronic motor control devices designed to reduce inrush current and mechanical stress during the starting and stopping phases of three-phase induction motors. These units utilize phase-angle control of thyristors to gradually ramp up voltage, p...
Soft starters PSS: Advanced Motor Starting Solutions for Industrial Automation
Soft starters PSS are electronic motor control devices designed to reduce inrush current and mechanical stress during the starting and stopping phases of three-phase induction motors. These units utilize phase-angle control of thyristors to gradually ramp up voltage, providing a smooth acceleration profile. Key technical parameters include rated operational current (Ie) ranging from 12A to 1050A, rated operational voltage up to 690V AC, and adjustable starting times from 1 to 30 seconds. The PSS series offers various control modes such as soft start, soft stop, and kick-start for high-friction loads. Built-in bypass contactors ensure energy efficiency by eliminating power dissipation during full-speed operation. Protection features include motor overload, phase imbalance, and short-circuit monitoring. These devices are available in standard and high-performance versions, with optional fieldbus communication modules for Profibus, DeviceNet, or Modbus integration.
Soft starters PSS are primarily deployed in industrial environments where controlled motor acceleration is critical. Typical applications include conveyor systems, pumps, fans, compressors, and crushers in sectors like water treatment, mining, cement, and HVAC. They are installed in motor control centers (MCCs) and distribution panels, often replacing direct-on-line starters to reduce mechanical shock on couplings and belts. The PSS series is also suitable for applications requiring frequent starts, such as escalators and material handling equipment. In process industries, they help maintain stable pressure and flow by eliminating sudden torque spikes.
The PSS category includes several subcategories based on current ratings and features. Key article codes include PSS12/24/30/37/44/60/72/85/105/142/175/210/260/320/370/470/550/620/720/850/1050, where the number indicates the rated operational current in amperes (e.g., PSS12 for 12A, PSS1050 for 1050A). These codes follow a standardized naming convention: "PSS" followed by the current rating. Additional variants include PSSB (with built-in bypass) and PSSE (enhanced performance). The series also offers accessories like remote operator panels (ROP) and communication interface modules (CIM). For example, the PSS12 is a compact unit for small motors up to 5.5kW, while the PSS1050 handles large motors up to 500kW.
Partnering with Electric Automation Network ensures access to genuine PSS soft starters with real-time pricing and up to 65% discount compared to list prices. Our engineering team provides personalized technical support for selection, sizing, and integration, including motor data analysis and harmonic studies. We offer express worldwide shipping from stock, with documentation packages including datasheets, wiring diagrams, and commissioning guides. Our multilingual portal allows seamless ordering in English, Spanish, German, Italian, French, and Portuguese, with secure payment options. Whether you need a single unit for a retrofit or bulk quantities for a new project, we deliver technical excellence and commercial efficiency.
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