ABB Softstarters Type SSM Medium Voltage 2300 - 13,800V Consult factory for higher voltages.   Description General Information Catalog Numbers Technical Data Approximate Dimensions

General Information

Key construction features

• Fused disconnect switch with blown fuse indicators and door safety interlocks rated for load break/fault make with automatic grounding arm 
• Inline isolation vacuum contactor0 sized for across-the-line motor starting (optional on "soft start only" models) 
• Bi-metallic thermal overload provides backup motor protection when operating in emergency bypass mode (optional on "soft start only" models) 
• 120V fused control power transformer standard in line start section (optional on "soft start only" models) 
• Digital controller provides solid state overload and numerous protective features for both the motor and the soft starter 
• Programmable keypad with LCD and status LEOs for easy setup and operation 
• Bypass vacuum contactor0 standard on all models to guarantee cool operation in all environments and extend unit life 
• Heavy duty SCR (Silicon Controlled Rectifier) stack assemblies with ring transformer isolated circuit for reliable, hard-firing gate pulse 
• Isolated low voltage compartment provides maximum protection for operating personnel 
• Mechanically interlocked medium voltage compartment 

Heavy duty SCR power assemblies

• Rated for 500 percent overload for 60 seconds 
• Field-proven design in use since 1975 
• Fiber optics gate-firing circuit using "ring transformer" isolation design for superior noise immunity

Industrial "real world" packaging

• Load break/fault make disconnect switch with door safety interlocking mechanism 
• Isolated, noise-immune low voltage control compartment 
• NEMA 12 enclosure with bypass vacuum contactor included as standard 
  13.8 kV saftstarters are rated NEMA 1.
  13.8 kV, 600A saftstarters use circuit breakers for isolation and bypass functions.
• Extra wiring space for MV cables for easy installation 

Custom engineered systems

• Available in special enclosures and lineups 
• Numerous control component options including: 
  • Reversing contactors
  • Motor protection relays
  • Customer specified devices
• Horizontal and custom bus interconnects 
• Various motor configurations including synchronous, wound rotor and two speed

Digital microprocessor control

• Full featured for flexibility, including dual ramp and programmable custom start curves 
• LCD status/alarm display and built in programing keypad 
• Serial communications port standard: RS485 with Modbus RTU protocol or RS232 with Windows interface 
• In-depth motor and system protection monitors 
• Monitors 18 separate parameters and maintains a nonvolatile fault memory 

Information Provided by:
ABB Inc.
Low Voltage Products & Systems
Phone: (888) 385-1221
www.abb-control.com