Industrial Soft Start Cabinet 380V | 11–630kW | IEC 60947 Certified

Online / Bypass Soft Start Cabinet 380V Intelligent Motor Control Cabinet 11-630kW

If you are looking for reliable 380V soft start cabinet for three-phase asynchronous motors, our online and external bypass soft-starter cabinet delivers controlled motor starting and stopping to solve high inrush-current issues caused by direct-on-line starting. This complete motor soft-start control cabinet covers power ratings from 11kw,55kw,180kw,400kw up to 630kw, serving as an ideal upgrade replacement for traditional star-delta and auto-transformer motor starters for global industrial buyers.

Equipped with microprocessor-driven intelligent control system, this industrial soft starter cabinet supports both online soft-start and external bypass working modes. During motor startup, it gradually raises output voltage to limit starting current and cut mechanical shock on belts, gears and pump pipelines; once the motor reaches full rated speed, the bypass contactor engages automatically to take over main circuit work, lowering thyristor heat generation and extending cabinet service life for long-duration continuous-run scenarios. Built-in multi-layer electrical protection includes phase loss, phase imbalance, overload, overheat and stall protection, which triggers alarm or power cut-off under electrical faults, preventing expensive motor burnout and unplanned production downtime. The heavy-duty powder-coated steel enclosure resists humidity, dust and factory temperature fluctuation; compact modular layout simplifies field installation, wiring and routine maintenance. Multiple starting and soft-stop curves are configurable to match diverse load characteristics, and real-time current, voltage and fault codes are displayed on the front-panel LCD screen for easy on-site debugging and monitoring.

This bypass type soft start control cabinet fits a wide spectrum of industrial load applications. It performs excellently for water supply pumps to eliminate water-hammer damage in piping systems, ventilation fans, air compressors, belt conveyors, crushers and mixing machinery. It is widely deployed in water treatment plants, mining sites, cement factories, chemical workshops, agricultural irrigation projects and municipal engineering facilities. Whether you need soft-start solutions for light-duty frequent-start equipment or heavy-duty high-power motors, our full-range power models can meet your project requirements. Compared with discrete soft-starter units, the pre-assembled complete control cabinet saves your engineering wiring work and shortens on-site commissioning cycles.

ZHEJIANG PQUAN Technology Co.,Ltd is a factory-based manufacturer with over 20 years experience in motor drive and control equipment. We hold CE and ISO9001 certifications, specialized in soft starters, frequency inverters and automatic voltage stabilizers. We support full OEM & ODM customization: custom cabinet logo, nameplate model numbers and printed user manuals as per client demands. Sample testing orders are accepted; MOQ is 1 set for large-power soft-start cabinets. Every product passes pre-production sample validation and strict pre-shipment inspection to guarantee stable quality. We offer 24/7 global technical support, full warranty against manufacturing defects, spare-parts supply and operator training services. Products are packed with export-grade plywood crates for safe ocean or air transport, with flexible payment terms including T/T and L/C at sight.

Select our factory-supplied 3-phase soft start cabinet 11-630kw to reduce grid impact, lower mechanical wear and cut your factory maintenance expense. Reach out to us to obtain technical datasheet and competitive quotation for your motor-control project.