Full Featured AC Motor Soft Starters - SR44 Series

• The SR44 series motor soft starters are fully digital, and use thyristors in all three AC motor phases for controlled reduced voltage motor starting and stopping
  
  
• SR44 series solid state starters have an Automatic Application Setup that fully configures the motor soft starter for a specific application with one entry
  
  
• SR44 motor soft starters also have a built-in "Optimizing" mode that reduces energy costs when used on lightly loaded and oversized AC motors, and external bypass capability for efficient running at rated speed
  
  
• Full-featured AC motor soft starter prices start at $769.00 (SR44-9)

• 9–370A @ 230–460VAC (suitable for use on 208V systems)
• 115 or 230 VAC selectable control voltage (with universal AC/DC inputs)
• Full three-phase motor control
• Fully programmable
• Easily and separately adjustable motor start and stop times
• External bypass capability for run
• Advanced energy-saving Optimizing Mode improves motor efficiency and power factor on lightly loaded or oversized motors; prolongs motor life
• Can be connected ‘in-the-delta’, allowing use of a smaller Soft Starter
• Can be used for motor reversing (with external contactors)
• Suitable for a wide variety of motor loads
• Keypad: 6 buttons with 2-line, 32-character display
• Can be used with local or remote control
• Optional Modbus or Remote Keypad control
• Programmable I/O for remote/PLC control
• Fault record history of last 5 trips
• IP20, panel mount

• CE
• REACH
• RoHS
• UL listed* (cULus E333109)
  * Options SR44-KPD & SR44-RS485 are not UL approved

• Communication/Modbus card SR44-RS485
• Remote keypad SR44-KPD (requires SR44-RS485)

• Mechanical Advantages
• Smooth acceleration; reduced shock and starting stress
• Extend lifespan of mechanical drive train components
• Fluid couplings and some clutches can be eliminated
• Electrical Advantages
• Reduced motor starting current
• More motors or larger motors can be started from lower-capacity power sources
• Allows motors to be started more frequently
• Economic Advantages
• Lower overall costs for new installations
• Reduced maintenance and replacement of mechanical drive train components
• Reduced starting current lowers demand charges
• Energy Optimizing mode reduces electrical power costs
• Automatic Application setup feature speeds installation by configuring the SR44 for a specific application with one setting

• The Sizing Chart contains steps to properly size SR44 full-featured soft starters.

SR44 Series Full-Featured Soft Starters / Accessories