Main Switchboards

All Solutions
  • Pictures

We supply Main Switchboards and Emergency Switchboards for Naval ships, conforming to Naval requirements. Switchboard construction materials are sheet steel for Standard switchboards, aluminium for light weight and stainless steel for special applications(for low magnetic signature).

Our highly customised designs cater to special needs of customers, such as:

  • 400Hz C&C switchboards for weapon applications
  • Tailor made project specific design to take care of space constraints
  • DC switchboards for the submarines
  • Plug-in / Draw-out breakers for ease of maintenance and for high MTTR

Switchboards with inbuilt Power Management Modules with full control and automation for DG sets and feeders:

  • DG Start/Stop,
  • Synchronization,
  • Active and Reactive Load Sharing,
  • High load callup / Low load shutdown
  • Blackout prevention,
  • Dead bus recovery,
  • Outgoing feeders control & monitoring etc. 

Switchboards control and monitoring is provided through PLC or VME based Power Management System in accordance with Naval requirements.

Largest Switchboard Delivered- 6300 Amp rating with short circuit fault level of 100 kA, confirming to JSS 55555 (Indian Naval Standard for environmental testing) and EMI/EMC standards as per MIL-STD-461E.

The switchboards are suitable for 690V / 440V / 380V / 230V voltage levels, and are designed as per Naval standard EED-Q-264, IEC 60497 and EN 60497 standards.

Component mounting and switchboard structure is modelled in 3D software to reduce switchboard production time; Finite Element Analysis is carried out on the switchboards to validate shock & vibration requirements. 

  • Medium Voltage Switchboards:-
    • Type approved MV Panel upto 36 kV system voltage
    • Complete range from 630A to 4000A
    • Short time rating upto 40 kA for 3sec
    • Metal clad, fully compartmentalized panel
    • Internal Arc compliant as per IEC 62271-200
    • In-built comprehensive safety interlocks
    • Integrated with Hybrid as well as Electric propulsion system

Contact Us

Marine Switchboards & Control Systems
Larsen & Toubro Limited,
Plot 6A, T.T.C. M.I.D.C Industrial Area, 
Rabale, Navi Mumbai - 400 701. 
Tel: +91-22-27649501/502/515
Fax: +91-22-27649301
(For Enquiries),
(For Service Call)