Brook Crompton 9-Lead IEC Motor Connection Diagram


This technical reference document provides the official Brook Crompton IEC connection diagram for 9-lead electric motors. It illustrates proper across-the-line starting configurations for both low-voltage and high-voltage operation, helping electricians, technicians, and maintenance professionals ensure correct motor wiring and reliable startup performance.

Key Points

  • Official Brook Crompton wiring diagram for IEC-configured 9-lead motors
  • Covers across-the-line starting for both low-voltage and high-voltage applications
  • Clearly identifies U, V, and W lead groupings and terminal connections
  • Includes torque specifications for terminal hardware (M4 and M5)
  • Designed for use by installers, electricians, and maintenance personnel
  • Supports proper motor setup to reduce wiring errors and startup issues