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L&T Fully Automatic Star Delta Starters

Larsen & Toubro Limited, India's largest manufacturer of low voltage switchgear products introduces the new MN range of starters. These starters are available in Direct-On-Line (DOL) and Star-Delta versions. This range represents the culmination of intensive R&D and extensive field trials. MN starters, comprising MNX contactors and MN relays, provide Overload and Single phasing protection to your motors. MN starter family conforms to IS13947-4, IEC 60947-4.

Salient Features

  • Conform to IS 13947 (Part 4) & IEC 60947-4.
  • Built-in single phasing protection.
  • In Star Delta Starters, Star contactor has same rating as Hold-on & Delta.
  • Suitable for Industrial & Rural applications.
  • Terminal block for ease of termination.
  • Starter enclosure with IP 54 of protection.

Please click on individual links below to know more about the L&T Fully automatic Star Delta Starters:

MN FASD Starters     MK1 FASD Starters    ML FASD Starters

or Directly
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Operational Details

Relay Setting

A screwdriver is used to set the relay indicator (which is on the dial) to the full load current setting. This ensures optimum protection under Overload and Single Phasing of the motor. In case of Star-Delta Starters, the relay must be set at the values In / 3 (0.58 In) as given in the selection table, since the connected relay carries only the phase current in Motors having Delta connected winding.


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