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WEG SSW900 Heavy-Duty Electronic Soft Starter
Model: SSW900
4-hour response · Pricing in SAR · Delivery across all KSA regions
SSW900 — WEG SSW900 Heavy-Duty Electronic Soft Starter
The WEG SSW900 Heavy-Duty Electronic Soft Starter is engineered for the most demanding motor starting applications in Saudi Arabia's industrial sectors, covering motor currents from 30 A to 1,800 A at 220–575 V three-phase. Unlike basic soft starters that simply ramp voltage, the SSW900 uses WEG's advanced thyristor control to precisely regulate both voltage and current during acceleration, eliminating the mechanical shock and electrical stress that reduce motor and driven equipment life in pump, compressor, and fan starting applications. Its integrated bypass contactor — rated for the full motor current — reduces steady-state losses to near zero once the motor reaches full speed, making it significantly more efficient in continuous-running applications than SCR-only designs that carry thyristor losses throughout operation.
The SSW900 includes an extensive built-in protection suite: electronic motor thermal model (IEC 60947-4-2 compliant), phase-loss and phase-sequence protection, stall, jam, and undercurrent (dry-run) detection, and insulation resistance testing capability for predictive maintenance. The built-in HMI with graphical display provides real-time current, voltage, power, and energy monitoring, making it a comprehensive motor protection relay and metering device as well as a soft starter. Communication options include Modbus RTU, DeviceNet, PROFIBUS, and EtherNet/IP, enabling remote monitoring and control from SCADA systems at ARAMCO, SABIC, and NWC facilities across the Kingdom.
In Saudi Arabia's heavy industrial sector, the SSW900 is specified by engineers at Jubail and Yanbu industrial facilities for large centrifugal pump starting where the DOL starting current would cause SEC grid penalties and mechanical coupling damage. ARAMCO-approved electrical contractors rely on the SSW900 for offshore platform and onshore oil field pump station motor control centres, where reliability and the absence of maintenance-intensive mechanical components (versus star-delta starters) justifies the investment. The device's class IP20 and IP65 enclosure options, combined with 50°C ambient rating, serve the full range of Saudi installation environments from air-conditioned substations to outdoor switchgear rooms.
Razz Middle East stocks the SSW900 across the most common current ratings for rapid delivery. We provide technical support including motor starting analysis, soft starter sizing, and protection relay coordination studies as part of our pre-sales service. Pricing is provided in SAR, and our engineers deliver on-site commissioning, parameter configuration, and testing to IEC and ARAMCO QC standards across all Saudi regions. Warranty and post-warranty service contracts are available for continuous operational support.
Technical Specifications
Full specifications for the SSW900
- Current Range
- 30–1800 A
- Voltage
- 220–575 V three-phase
- Bypass Contactor
- Built-in
- Protection
- IEC 60947-4-2 compliant motor thermal model
- Communication
- Modbus RTU, PROFIBUS, EtherNet/IP, DeviceNet
- Enclosure
- IP20 / IP65
- Ambient Temperature
- Up to 50°C
- Display
- Graphical HMI with real-time metering
Key Features & Benefits
- Built-in bypass contactor rated for full motor current eliminates steady-state thyristor losses, delivering lower operating costs than SCR-only soft starter designs.
- Advanced thyristor control regulates both voltage and current during acceleration, eliminating mechanical shock and extending pump and driven equipment service life.
- Comprehensive protection suite including motor thermal model, stall, jam, undercurrent (dry-run), and insulation resistance testing covers all common motor fault modes.
- Built-in graphical HMI with real-time current, voltage, power, and energy metering makes the SSW900 a combined soft starter and motor protection metering relay.
- Multiple communication protocols (Modbus, PROFIBUS, EtherNet/IP, DeviceNet) enable SCADA integration at ARAMCO, SABIC, and NWC facilities without additional gateway hardware.
- IP65 enclosed version rated to 50°C ambient covers the full range of Saudi installation environments from indoor MCC rooms to outdoor switchgear enclosures.
Industrial Applications in Saudi Arabia
- Large centrifugal pump motor starting at Jubail and Yanbu industrial facilities, eliminating SEC grid demand penalties from high DOL starting currents.
- ARAMCO oil field pump station motor control centres where reliability and absence of mechanical components versus star-delta starters reduces maintenance requirements.
- Compressor motor starting at SABIC petrochemical plants where controlled acceleration reduces process upset from pressure transients during startup.
- Desalination high-pressure pump motor starting at SWCC and MARAFIQ facilities where smooth starting extends mechanical seal and coupling life.
- Conveyor drive motor starting in cement and mining plants, where controlled torque ramp eliminates belt slip and mechanical shock on full-load starting.
- Large HVAC fan motor starting in commercial and industrial facilities, where soft starting reduces inrush current and extends motor winding life.
Industrial Supplier in Saudi Arabia
Get a Quote for the WEG SSW900 Heavy-Duty Electronic Soft Starter
We respond within 4 business hours. Send model SSW900 for competitive pricing in SAR with delivery across Saudi Arabia and the GCC.
Frequently Asked Questions — SSW900
Common questions from buyers in Saudi Arabia and the GCC