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China factory - Shanghai Fradwell Industrial Automation Co., Ltd.

Shanghai Fradwell Industrial Automation Co., Ltd.

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  3. WEG SSW900 Soft Starter 10-1400A 220-575V 690V Motor Starter
China WEG SSW900 Soft Starter 10-1400A 220-575V 690V Motor Starter
China WEG SSW900 Soft Starter 10-1400A 220-575V 690V Motor Starter

  1. China WEG SSW900 Soft Starter 10-1400A 220-575V 690V Motor Starter

WEG SSW900 Soft Starter 10-1400A 220-575V 690V Motor Starter

  1. MOQ： 1
  2. Price： $500 - $2,500
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Freight Charge For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quot
Packaging Details Original
Shipping Term International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Protection degree IP20 (frames A/B), IP00 (frames E–G)
Series SSW900
Payment Terms L/C,D/A,D/P,T/T
Main supply voltage 220–575 V AC (T5) / 575–690 V AC (T6)
Control voltage 110–240 V AC (E2) / 110–130 V AC (E3) / 220–240 V AC (E4)
Internal bypass Yes (AC1 run bypass, standard)
Delivery Time 3-5Workdays
Rated current 10 – 1400 A
Model Number SSW900
Brand Name WEG
Place of Origin Brazil
Certification CE、cULus、RoHS

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  1. Product Details
  2. Company Details

Product Specification

Freight Charge For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quot Packaging Details Original
Shipping Term International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line Protection degree IP20 (frames A/B), IP00 (frames E–G)
Series SSW900 Payment Terms L/C,D/A,D/P,T/T
Main supply voltage 220–575 V AC (T5) / 575–690 V AC (T6) Control voltage 110–240 V AC (E2) / 110–130 V AC (E3) / 220–240 V AC (E4)
Internal bypass Yes (AC1 run bypass, standard) Delivery Time 3-5Workdays
Rated current 10 – 1400 A Model Number SSW900
Brand Name WEG Place of Origin Brazil
Certification CE、cULus、RoHS
High Light WEG SSW900 soft starter motor ，220-575V motor starter with warranty ，690V soft starter for motors
WEG SSW900 Soft Starter 10-1400A 220-575V 690V Motor Starter
The WEG SSW900 is WEG's next-generation advanced solid-state soft starter (RVSS - reduced voltage soft starter), rated from 10 to 1400 A and covering 6 to 1000 HP motors at 380 V. It raises motor terminal voltage progressively through firing-angle control of antiparallel thyristors, holding starting current and torque within a set limit. This eliminates the grid and mechanical shock of direct-on-line (DOL) starting and extends the service life of the motor, gearbox, belts and bearings.
An internal AC1 run bypass is standard. Once starting is complete the thyristors are automatically shorted by the bypass contactor, so no additional losses or heat are generated in run mode - and no external bypass contactor is needed, saving both panel space and component cost. The main supply is available on two voltage platforms: T5 at 220-575 V AC and T6 at 575-690 V AC, covering the main industrial grids from North American 230/460/575 V through Eurasian 380/400/690 V. The SSW900 requires no current derating up to 55 °C, so hot workshops and tropical projects need no oversized selection for temperature rise.
For control and maintenance, the SSW900 provides a detachable graphical HMI (parameter copy/download, Bluetooth and front-panel USB) and a battery-backed real-time clock that timestamps every event and fault log. Two independent expansion slots combined with embedded SoftPLC allow logic programming on board, reducing dependence on an upstream PLC. Communication options include RS485, DeviceNet, PROFIBUS-DP, EtherNet/IP, Modbus-TCP and PROFINET IO. The unit is built with lead-free processes and conformal-coated circuit boards, compliant with RoHS, for dusty, humid and corrosive environments. Frames A and B mount on DIN rail or by screws.
Product Highlights
Internal AC1 run bypass as standard - no external bypass contactor required; saves space and cost
10 - 1400 A current coverage - a single series spanning 6 to 1000 HP at 380 V
Two voltage platforms - T5 at 220-575 V and T6 at 575-690 V, matching industrial grids worldwide
No current derating up to 55 °C - no oversized selection needed in hot environments
Three braking methods - reverse braking, optimal braking and DC braking
Fire mode (emergency start) - forces a start under emergency conditions
Detachable graphical HMI with Bluetooth and USB - keypad can be door-mounted; parameters copied or downloaded; mobile app access
Two expansion slots plus embedded SoftPLC - on-board logic programming, less reliance on an upstream PLC
Battery-backed real-time clock - events and faults timestamped to the second for accurate troubleshooting
Lead-free, conformal-coated boards, RoHS compliant; WEG WPS configuration and SoftPLC programming software included at no charge
Technical Specifications
Parameter Specification
Brand WEG
Series SSW900
Product type Advanced solid-state soft starter (RVSS, reduced voltage soft starter)
Rated current range 10 - 1400 A
Motor power range 6 - 1000 HP at 380 V
Main supply voltage T5: 220-575 V AC; T6: 575-690 V AC
Supply phases Three-phase
Control voltage options E2: 110-240 V AC; E3: 110-130 V AC; E4: 220-240 V AC
Internal bypass Yes (AC1 run bypass, standard)
Overload rating (3-cable, ≤412 A models) AC-53b 3-30:330 at 55 °C ambient
Overload rating (3-cable, ≥480 A models) AC-53b 3-30:690 at 40 °C ambient
Overload rating (6-cable, ≤412 A models) AC-53b 3-25:335 at 55 °C ambient
Overload rating (6-cable, ≥480 A models) AC-53b 3-25:695 at 40 °C ambient
Digital inputs 5 isolated digital inputs, programmable functions
Analog output 1, 0-10 V DC / 4-20 mA
Thermistor input 1 (motor thermistor)
Relay output 1, 1.0 A / 240 V AC
Braking methods 3: reverse, optimal, DC braking
Fire mode Yes (emergency start)
Real-time clock Yes, battery-backed; event and fault logs include date and time
HMI Graphical detachable keypad with parameter copy/download, Bluetooth and USB
Display Graphical display, customizable home screens; 3 selectable languages
Communication (on board) Bluetooth, USB
Communication (optional) RS485, Anybus DeviceNet, PROFIBUS-DP, EtherNet/IP, Modbus-TCP, PROFINET IO
Expansion slots 2 independent slots
SoftPLC Embedded, on-board logic programming
Software WEG WPS configuration and SoftPLC programming software (free)
Mounting DIN rail or screw mounting (frames A and B)
Ambient temperature Up to 55 °C without current derating
Environmental Lead-free, RoHS compliant
Circuit boards Conformal coated
Type code structure SSW900
Frame Sizes and Protection Degree
Frame H mm W mm D mm Weight kg (lb) Protection
A 200 127 203 1.93 (4.25) IP20
B 208 144 260 4.02 (8.86) IP20
C 276 223 261 6.55 (14.44) IP20 (with optional kit)
D 331 227 282 12.83 (28.28) IP20 (with optional kit)
E 575 390 260 38 (83.75) IP00
F 760 464 316 75.40 (166.23) IP00
G 914 539 316 107.20 (236.34) IP00
Model Selection Guide
Model Rated current A 220/230 V 380/400 V 440/460 V 525 V 575 V
SSW900A0010T5E2 10 3 HP 6 HP 7.5 HP 7.5 HP 10 HP
SSW900A0017T5E2 17 6 HP 10 HP 12.5 HP 15 HP 15 HP
SSW900A0030T5E2 30 10 HP 20 HP 20 HP 25 HP 30 HP
SSW900B0045T5E2 45 15 HP 30 HP 30 HP 40 HP 40 HP
SSW900B0105T5E2 105 40 HP 75 HP 75 HP 75 HP 100 HP
SSW900C0130T5E2 130 50 HP 75 HP 100 HP 125 HP 125 HP
SSW900C0200T5E2 200 75 HP 150 HP 150 HP 200 HP 200 HP
SSW900D0365T5E1 365 150 HP 250 HP 300 HP 350 HP 400 HP
SSW900E0670T5E1 670 250 HP 500 HP 550 HP 650 HP 750 HP
Applications
Industry Typical loads
Cement and mining Crushers, ball mills, conveyors, fans
Chemical and petrochemical Pumps, compressors, mixers
Water and wastewater Water pumps, sewage pumps, blowers (pump control mode suppresses water hammer)
Steel and metallurgy Mill auxiliary drives, fans, pumps
Wood processing Crushers, fans, conveying equipment
Plastic and rubber Internal mixers, extruders, mixers
Food and beverage Pumps, compressors, mixers
Ceramic Ball mills, fans, presses
Glass Fans, conveying equipment
Textile Fans, pumps, winding equipment
Typical Duty Profiles
Heavy duty starting - conveyors, crushers, ball mills and other high-inertia loads
Pump applications - pump control mode suppresses water hammer and pressure surges
High-frequency starting - cranes, hoists, production lines with frequent stop/start
Hot workshops and tropical projects - the 55 °C no-derating rating is a decisive advantage
Retrofit projects - DIN rail or screw mounting to replace an existing DOL starter panel
Frequently Asked Questions
Q1. What is RVSS, and where does the SSW900 fit?
RVSS stands for reduced voltage soft starter. The SSW900 is WEG's next-generation advanced solid-state soft starter. It progressively raises motor terminal voltage through firing-angle control of antiparallel thyristors, limiting starting current to a set range - replacing direct-on-line starting as well as traditional reduced-voltage methods such as star-delta and autotransformer starters.
Q2. Do I need an additional bypass contactor?
No. An internal AC1 run bypass is standard on the SSW900. Once starting completes, the thyristors are automatically bypassed, so no additional losses or heat are generated in run mode. This saves panel space and component cost.
Q3. How do I select the right model for my motor?
The SSW900 covers 10-1400 A, corresponding to 6-1000 HP at 380 V. Selection requires: (1) application or load type (pump, fan, compressor, conveyor, crusher); (2) motor nameplate data (rated power, current, voltage, poles); (3) the torque-versus-speed load curve; (4) load inertia; (5) supply voltage; (6) maximum number of starts per hour; (7) installation environment conditions; (8) control voltage. Provide these and we can complete the selection for you.
Q4. What does "no derating at 55 °C" mean? Do I need to oversize in a hot workshop?
The SSW900 requires no current derating up to 55 °C ambient, so you can select directly on motor rated current. Note however that overload rating varies by current class: models ≤412 A are rated AC-53b 3-30:330 at 55 °C, while models ≥480 A are rated AC-53b 3-30:690 at 40 °C. If your ambient exceeds 55 °C, apply the WEG derating curve.
Q5. Which communication protocols are supported?
Bluetooth and USB are on board (front-panel USB). Optional modules add RS485, Anybus DeviceNet, PROFIBUS-DP, EtherNet/IP, Modbus-TCP and PROFINET IO. Embedded SoftPLC also allows logic programming on board.
Q6. What is the difference between 3-cable and 6-cable (inside-delta) connection?
Three-cable is the standard connection, with the contactor and thyristors in series between supply and motor. Six-cable (inside-delta) connection opens the motor winding delta point and inserts the thyristors into each phase winding, so the same frame can drive a larger motor - for example a 130 A model is rated 130 A in 3-cable and 225 A in 6-cable. The 6-cable overload rating is expressed differently though (AC-53b 3-25:335 for models ≤412 A), and it only applies to motors with all six winding ends brought out. State which connection you intend to use when ordering.

Company Details

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About Us: Beyond Components, We Deliver Certainty Shanghai Fradwell Industrial Automation Co., Ltd — Your Trusted Partner in Industrial Automation. With over two decades of industry expertise, we have evolved from a traditional supplier into a one-stop integrated solutions provider f... About Us: Beyond Components, We Deliver Certainty Shanghai Fradwell Industrial Automation Co., Ltd — Your Trusted Partner in Industrial Automation. With over two decades of industry expertise, we have evolved from a traditional supplier into a one-stop integrated solutions provider f...

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  • Shanghai Fradwell Industrial Automation Co., Ltd.
  • No. 168, Chengnan Road, Pudong New Area, 201399 Shanghai, China
  • https://www.industrial-automationcontrol.com/

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