Motor Protection Circuit Breakers

L&T’s Supernova series motor protection circuit breaker (MPCB) integrates functions of a MCCB and thermal overload relay into a highly compact single unit. Equipped with a wide range current adjustment dial (with maximum/minimum ratio of 1.4 to 1.6), the MPCB easily adjusts to match the rated current of the motor, for optimum protection. MPCB provides protection against short circuit & overload. Also the compact size of the MPCB, including overload relay functions, enables a smaller installation area with less wiring space, for a reduction in panel size.



  • Compactness
  • High Breaking Capacity
  • Short circuit protective coordination
  • Reduction in wiring work
  • Ecological design standards
  • Standard accessories for all frames of MPCB
  • Wide range of accessories which suits your requirements
  • IP20 terminal cover prevents accidental contact to electrically charged part


  • Auxiliary contact blocks
  • Alarm contact blocks
  • Auxiliary and alarm contact blocks
  • Short-circuit alarm contact block
  • Shunt trip devices
  • Undervoltage trip devices
  • External operating handles