Benshaw RediStart MVRMX3 Medium Voltage Soft Starter User Manual


This user manual provides complete technical and operational guidance for Benshaw’s RediStart MVRMX3 medium voltage solid-state motor starter. It includes essential information on installation, configuration, theory of operation, safety precautions, and maintenance to ensure safe, efficient, and reliable motor control performance.

Key Points

  • Comprehensive Installation Instructions: Includes site preparation, wiring diagrams, safety procedures, and start-up guidance.
  • Programming and Operation: Details keypad operation, parameter setup, and configuration for optimal starter performance.
  • Maintenance and Troubleshooting: Step-by-step guidance for LED diagnostics, preventative maintenance, and common fault resolution.
  • Warranty and Support Information: Outlines Benshaw’s standard and extended warranty policies and contact details for technical support.
  • Technical Specifications: Covers electrical ratings, CT ratios, overload protection curves, and optional RTD and ground fault components.
  • Safety Precautions: Provides NFPA 70E-based electrical safety practices and detailed hazard warnings for technicians.
  • Theory of Operation: Explains solid-state motor overload protection, harmonic compensation, and control circuitry functions.
  • Appendices and Reference Materials: Includes Modbus register maps, parameter tables, conformity declarations, and glossary.