Our Products
Main Distribution Board

An MDB is a panel or enclosure that houses the fuses, circuit breakers and ground leakage protection units where the electrical energy, which is used to distribute electrical power to numerous individual circuits or consumer points, is taken in from the transformer or an upstream panel. An MDB typically has a single or multiple incoming power sources and includes main circuit breakers and residual current or earth leakage protection devices.


EVEREST-m range of main distribution boards are backed by many years of knowledge, switchgear experience in addition to feedback from consulting engineers, electrical contractors and end users.
With EVEREST-m we assure you cutting-edge performance, superior safely, greater reliability together with increased versatility makes it competent to accomplish todays challenging demands and move toward fulfilling future expectations.
EVEREST-m is a fully compartmentalized and duly complied with the latest international standards and local regulations, elevating your power distribution to a new level.

Key features of Main Distribution Boards
  • Fully type tested assemblies as per IEC 61439-1 & IEC61439-2
  • Rated upto2500A
  • Manufactured to Form 2, Form 3 & Form 4 construction
  • Type tested for 50kA/3 sec
  • Ample cabling space for easy connections
  • Top and bottom cable entry.
  • Panels for front or rear access to suit application
  • Index of protection : IP 54
  • Floor mounting
  • Maximum safety & reliability
  • Modular system with Customized design to meet end user requirements.

Safety Features
  • Noble Guardian
    EVEREST-m is divided into distinct compartments (equipment, busbar, cable and auxillary) segregated by metallic or non-metallic partitions or barriers, to ensure maximum safety level for your operator against electric shortcut.
  • Multi Level Safety
    The specially designed tool operated and padlockable door knob provides multi level safety for your personnel. Additional you are protected from accidental access to live parts by our intelligent interlocks.
  • Trusted Bus System
    Generous clearances for main busbar and connectors ensure unmatched safety for you. Supports and insulation materials are flame resistant, track resistant and non-hygroscopic exhibiting outstanding electrical properties.
  • Environmental ControlEVEREST-m gives you protection against access to hazardous parts, solid foreign bodies and liquids. The innovative design of camlock, hinges and door gasket bolster ingress protection.
  • Integral Safety-Arc ProtectionThe complete closed door operation and limitation of fault within a confined area, EVEREST-m ensures total safety for the operator and maintenance as well as plant safety in order to limit the damages.
Sub Main Distribution Boards

The MDB then feeds SMDBs, which is installed generally at the point where a large distribution cable terminates and several smaller sub-circuits start. These are the switchboards that although similar construction, are larger than a final distribution board circuit. The boards are installed midway through the power distribution system, at the point in a large distribution cable ends, and several smaller starting sub-circuits.


EVEREST-s power distribution boards from L&T meets the demands of commercial buildings, educational establishments, hospitals, government buildings, manufacturing operations and other applications that requires safe, reliable and high performance protection of their electrical power sub-distribution system. EVEREST-s is a type tested Sub-Main Distribution Board (MCCB panel board) used for power distribution. It has MCCBs as incoming and outgoing switching-cum-protection device. It complies with IEC61439-2 and has been designed for easy handling and quick, simple installation. Compact MCCB design ensures maximum cabling area within the enclosures. Removable top & bottom gland plates are provided for ease of installation and cabling. Removable plates allow fitting of additional items such as top and bottom extensions boxes and metering panels.
EVEREST-m is a fully compartmentalized and duly complied with the latest international standards and local regulations, elevating your power distribution to a new level.

Key features of Sub Main Distribution Boards
  • Ready-to-use solution for power distribution
  • Modular construction and compact design provide economy of space, installation time and cost
  • Fully shrouded enclosed tin-plated copper busbar provides increased safety.
  • Safer as all devices including incomers are located behind a lockable door and front cover screws to prevent unwanted access.
  • Generous cabling area throughout the range. Compact MCCB design ensures maximum area within the enclosures.
  • Removable interior allows assemblies to be mounted either way up.
  • Removable top & bottom gland plates make drilling & access easier. It allows fitting of additional items such as top and bottom extension boxes and metering panels.
  • External and Internal earthing points are provided.
  • Metering options available.

Change Over Switches (63-2000A)

C-Line offers you a unique series of changeover switches combining compactness with high performance & customer convenience, thus, making C-line a state-of-the-art product in changeover technology. The C-line range covers ratings from 63A to 2000A in 6 frame sizes. These change over switches are available in open execution, sheet steel enclosure, fused version(Suitable for DIN type fuse-link) and motorized version. Onload changeover S-D consists of two separate sets of terminals for incoming supplies and a set of output terminals to connect the common load. Thus, changeover switch ensures continuity of supply to the load by alternating between normal and alternate supply.

Product Range

Onload Changeover S-D are available from 63A to 2000A. The range is covered through 6 frames as shown below.

Frame No. Ratings(A)
I 63 100  
II 125 160 200
III 250 315  
IV 400 630  
VI 1250 800 1000
V 630 800 1000
VI 1250 1600 2000*
  • Changeover S-D suitable for open execution: Changeover S-D, which can be commissioned in panels are of open execution type provide IP20 protection from front. Range 63A to 2000A.
  • Changeover S-D in SS enclosures: Changeover S-Ds are available in sheet steel enclosure with adequate space for cable terminations so that additional cable entry boxes are not required. Enclosure provides IP54 protection. Range 63A to 1000A
  • Changeover S-D suitable for HRC fuses: The changeover S-Ds for open execution can be easily converted to fused version at site by using fuse conversion kit. It is suitable for cylindrical & knife type (DIN) fuse links. Range 63A to 800A.
  • Motorised Changeover S-D: Onload changeover S-Ds are available in motorized version with control voltage 24V ac. Range 125A to 2000A.

Bus Duct Systems

To meet your entire range of power delivery needs, weoffers two Busduct systems from 100A to 6300A.

  • Medium voltage system for power transmission
  • Low voltage system for connection between transformer and for back-up supply to power distributions and as a plug-in in building power systems.
Key features of Bus Duct Systems
  • Longer life
    Each HenikwonBusbar is epoxy compound-coated with a uniform thickness of 16mm. The epoxy coating matches metallic expansion and contraction, ensuring that it does not crack or allow moisture to seep in. This means reduced corrosion, and longer life for your system.
  • Higher Savings
    A higher joint overlapping area ensures less power loss. More savings-in terms of not just money, but also power, which is becoming scarcer by the day.rical properties.
  • Enhanced Safety
    To ensure the highest degree of safety, HenikwonBusduct systems are totally enclosed and well-insulated.
  • Greater Reliability
    Comprehensive manufacturing processes, strict compliance and selection of inputs give you the assurance of reliability. Further, the HenikwonBusduct system is certified by an independent third party.
  • Sandwich System
    The sandwich system is lightweight, low impedance, non ventilated, naturally cooled and totally enclosed system. The system is available with 50% or 100% internal earthing, 50% or 100% neutral busbar to address harmonics, 200% neutral busbar is also available.
  • Busbar
    99.99% pure copper Busbars are tin/silver coated to protect them from water and moisture that can cause reduction in dielectric strength. Likewise, aluminiumbusbars are made of high conductivity electrical grade aluminium(99.6% pure aluminium)
  • Joint
    Direct contact jointing, which ensures total and higher surface area contact, result in less power-loss and cooler performance. All joints are maintenance free. The highest strength bolt is insulated with a high quality insulation material. For uniform distribution of the clamping force, all bolted connections are equipped with a leaf spring. A maintenance free lock nut is provided where the outer head will be twisted off , once it reached the appropriate torque.
  • Enclosure/Housing
    Galvanized steel housing or aluminium housing with epoxy powder coated by an automated process to achieve fire resistance. The housing also gives integral ground as standard requirement where it acts as an earth conductor. Due to its compact, sandwich type construction, it does not require an internal fire stop barrier.
  • Plug-in Box/Tap-off Box
    Built in interlock system that prevents opening of the cover when device inside is ON. Safety provision to prevent the installation or removal of plug-in box when turned ON. During insertion the conductor makes contact first before the phase conductors, this allows the first-in-last-out concept. The plug-in box is equipped with internal insulation barriers to prevent accidental contact with the conductor. TOUs are provided with padlocking.