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L&T Motor Starters

Larsen & Toubro is a technology-driven USD 7 billion company that infuses engineering with imagination. The Company offers a wide range of advanced solutions in the field of Engineering, Construction, Electrical & Electronics, Machinery and Information Technology.

L&T introduces the new MN range of starters. These starters are available in Direct-On-Line (DOL) and Star-Delta versions. This product range is 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.

Salient Features of L&T DOLs

  • 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.

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.

Please click on the links below for more details:


Direct On-Line Starters


Semi-Automatic Star Delta Starters


Fully Automatic Star Delta Starters

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