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Full-featured soft starters use thyristors for reduced voltage motor switching, have automatic configuration, built-in bypass relays, and a patented iERS system that reduces energy costs. Soft starters lower energy use and reduce wear on motors and mechanical equipment.
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Soft Starters
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Full featured AC motor soft starters offer greater configurability with software and keypad setup options and more communication flexibility. They provide solid state power electronics on all three phases with built-in bypass contacts.
Soft Starters Overview
For part listings and specifications, go to Shop Now
Stellar® SR55 Soft Starters
SR55 soft starters, used to control 3-phase AC induction motors, are fully digital and packed with features. They provide smooth acceleration for reduced mechanical shock and starting stress, full motor overload protection, easy setup with embedded touchscreen or quick automatic application setup, and integrated Modbus RTU communications.
- 3 frame sizes available, with ratings from 17-477A @ 200-480VAC
- 24VDC, 110VAC, or 230VAC selectable control voltage
- Internally bypassed during run
- Full three-phase motor control
- Easily and separately adjustable motor start and stop times
- Built-in SCR failure protection
- Full data logging (fault records, motor current, operational status, etc.)
- Optional Modbus TCP or EtherNet/IP communications
- Configure and view parameters as well as view logs using StellarLink software
- iERS (intelligent Energy Recovery System) saves energy on lightly-loaded motors
- Can be connected 'in-the-delta', allowing use of a smaller soft starter (no iERS optimizing with in-delta connections)
- Can be used for motor reversing (with external contactors)
- Can be used with local or remote control
- Programmable analog I/O, digital inputs, and relay outputs for remote control
- IP20, panel mount with optional finger guards for frame sizes 1 and 2 soft starters
- CE, ETL (CSA C22.2 No.14 and UL 508), REACH, RoHS
Starting at
$1,066.00
(SR55-017)
WEG SSW900 Series Soft Starters
Combining convenience and innovation, the SSW900 is the right choice for complete motor protection and start/stop control. Developed for industrial or professional use, this line of soft starters allows easy and simple access to the configuration settings and application data. The SSW900 offers numerous advantages over similar soft starters in both functionality and ease of use.
- 10 to 950 A @ 220-575VAC
- Advanced keypad with intuitive setup
- Optional software setup with free WEG WPS software (the same software used for all WEG motor control products)
- Standard connection (3 wires) or Inside Delta connection (6 wires) (130A and higher models only)
- Ample built-in I/O with detachable terminals for easy wiring
- Integral motor thermal protection
- Robust design allows operation at 55 °C ambient temperature without current derating on models up to 412A
- Fire mode
- Built-in bypass
- Well-structured menu interface
- Online parameter help right on the HMI
- Programmable protections for line-side short circuit, motor overload, underload, overvoltage, undervoltage, voltage imbalance between phases, and phase sequence
- Thermal protections through built in PTC input or optional PT100 card
- Bypass protections (overcurrent, undercurrent, and failure in the bypass contactor opening)
Starting at
$929.00
(SSW900A0010T5E2B)
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