MCC panel lineup built by Wisdom Techno Solutions, corner view showing starter feeder doors with start-stop pushbuttons and indication lamps
Long MCC lineup manufactured in Vadodara, front view of multiple starter cubicles with mimic bus

What an MCC Panel Is, and What We Build

MCC stands for Motor Control Centre. It is the board that houses the starters for a plant's motors in one place — the contactors, the protection devices and the control circuits that switch each motor and shut it down when something is wrong. Centralising them means one busbar, one set of incoming gear and one place an electrician goes to when a motor trips, instead of a starter bolted to a wall beside every machine.

Wisdom Techno Solutions builds MCC panels to order at our works in Vadodara, Gujarat, for industrial plants, EPC contractors and infrastructure projects across India. Every board is engineered against your motor schedule, load list and system fault level — not adapted from a standard catalogue design.

  • DOL, star-delta, soft starter and VFD feeders in the same assembly
  • Built inside design-verified licensed systems — Rittal Ri4Power, C&S CX, Siemens SIEPAN
  • Fixed, plug-in or fully draw-out feeder modules
  • MPCB, MCCB with overload relay, or electronic motor protection relay per feeder
  • Form 1 to Form 4B separation, so one starter can be worked on while the rest stay live
  • Busbars, switchgear, wiring and enclosure assembled and tested in-house, with a FAT report on every board

From a compact board of a dozen starters to a long lineup with drives, metering and a communication bus, the specifications below cover our standard build. Applicable ratings are confirmed against your specification before manufacturing begins.

MCC Panel Technical Specifications

The table below covers the standard build. Every panel is engineered against the project motor schedule, load list and fault level, so the applicable ratings are confirmed against your specification before manufacturing begins.

Parameter Specification
Panel type MCC — Motor Control Centre, housing the starters and protection for the plant's motors
Rated operational voltage (Ue) 415 V AC, 3-phase 4-wire (up to 690 V on request)
Rated insulation voltage (Ui) 1000 V
Rated frequency 50 Hz
Busbar system rating Up to 6300 A on the Rittal Ri4Power licensed system
Short-circuit withstand (Icw) Declared per project against the system fault level and the licensed system's verified configuration
Applicable standard IEC 61439-1 and IEC 61439-2 / IS-IEC 61439 Part 1 and Part 2
Form of internal separation Form 1 to Form 4B (Form 4B Type II on the C&S CX licensed system)
Incoming devices ACB or MCCB, fixed or draw-out
Motor feeders DOL, star-delta, soft starter and VFD starters
Feeder construction Fixed, plug-in or fully draw-out modules
Motor protection MPCB, MCCB with overload relay, or electronic motor protection relay
Protection functions Overload, short circuit, earth fault, single phasing, phase imbalance, under-voltage
Control supply Control transformer or dedicated control supply, with control MCB per feeder
Local / remote control Selector switch, start-stop pushbuttons, indication lamps and ammeter per feeder as specified
Interfacing Potential-free contacts to DCS or PLC; Modbus RTU / Modbus TCP where specified
Busbar material Electrical grade aluminium or copper
Control wiring 660 / 1100 V grade PVC-insulated stranded copper, ferruled and numbered
Degree of protection IP42 / IP52 / IP54 / IP55 / IP65
Gasketing Rubber gasket on doors and removable covers, to suit the declared IP rating
Enclosure material MS CRCA sheet steel; stainless steel on request
Pre-treatment Three-tank or seven-tank process, specified per project
Paint finish Epoxy-based primer with powder coating, or synthetic enamel
Panel layout Single front or double front (front and rear access)
Heat management Natural ventilation, filtered forced ventilation with exhaust fans, or panel cooling unit
Cable entry Top or bottom, removable gland plate
Installation Indoor; outdoor with weatherproof construction and canopy on request
Future extension Extendable busbar chamber and spare or blank compartments, when specified at design stage
Testing Routine verification in-house on every assembly; customer, consultant and third-party witnessed FAT supported

Fixed vs Plug-in vs Draw-out MCC

The starter content is the same in all three. What changes is what has to happen to the rest of the board when one feeder needs work — and that is a maintenance decision, not an electrical one.

Consideration Fixed Plug-in Draw-out
Removing a feeder for maintenance Isolate and unwire in place Unplug the module Withdraw the module on its rails
Downtime for that feeder Highest Low Lowest
Does the busbar have to be dead? Usually yes for the section No No
Spare module can be swapped in No Yes Yes
Cost per feeder Lowest Middle Highest
Space per feeder Least More Most
Typical fit Small plants, few motors, planned shutdowns available Mid-size plants wanting quicker changeover Continuous process plants where a shutdown is expensive
Form of separation usually paired with it Form 2b or 3b Form 3b or 4a Form 4B

When an MCC Is the Right Choice — and When It Is Not

An MCC earns its place when the motors are numerous and grouped. One busbar, one incomer, one place to go when something trips, and one enclosure to keep clean and cool. Above roughly a dozen motors in the same area, an MCC is almost always cheaper over the life of the plant than individual starters distributed around it.

It is the wrong choice when the motors are few and physically scattered. Cabling every remote motor back to a central board can cost more than the board itself, and a single long feeder run brings voltage drop and cable sizing problems with it. Where distribution and a modest motor group sit together and floor space is tight, a PMCC — distribution and motor control in one assembly — is often the better answer than a separate PCC and MCC.

What to Send for a MCC Panel Quotation

Send these and every offer you receive will be comparable:

  • Single line diagram
  • Motor schedule — rating, starting method and duty for each motor
  • Load list with connected and demand loads
  • Transformer rating and impedance
  • System fault level
  • Required form of separation and IP rating
  • Fixed, plug-in or draw-out construction
  • Indoor or outdoor installation, single front or double front
  • Control philosophy — local, remote, DCS or PLC interface
  • Spare feeder and future expansion provision
  • Applicable standard, with part and year

Where the motor schedule is not final we can build an offer from an outline feeder list and the transformer rating, and refine it once the schedule exists.

Common Mistakes in MCC Panel Specifications

  • Choosing the starting method feeder by feeder without checking the supply. Six DOL starters on one board can pull a starting current the transformer will not tolerate; the starting method belongs to the system, not to the motor alone.
  • Adding VFD feeders after the design is fixed. Drives change the harmonic and thermal picture of the whole board, so they belong in the enquiry, not in a variation order.
  • Ignoring the heat that drives and starters produce. A board full of VFDs needs its temperature rise re-checked; the IP rating and the cooling arrangement have to be decided together.
  • Omitting the fault level from the enquiry. Without it no vendor can size the assembly correctly, and the offers stop being comparable.
  • Writing "as per IEC 61439" with no part and no year. The verification evidence a manufacturer submits has to be traceable to a specific standard and configuration.

How Wisdom Techno Solutions Builds MCC Panels

Wisdom Techno Solutions is a licensed partner for three design-verified switchgear platforms — Rittal Ri4Power since 2021, C&S CX since 2023 and Siemens SIEPAN Elite/8PU since 2024. We build inside each system's verified configuration and routine-verify every assembly in-house at our Vadodara, Gujarat facility. Under IEC 61439 the design verification belongs to the system owner and the routine verification to the assembly manufacturer — what that division of responsibility means for a buyer is set out here.

Related Technical Guides

Engineering guides from our team on the calculations and design decisions behind an MCC panel:

Related Panel Types

If this is not the right fit for your layout, these are the alternatives we build to the same standard:

  • PCC panels — power distribution from the transformer incomer to the plant's outgoing feeders
  • PMCC panels — PCC distribution and MCC motor control combined in one assembly
  • IMCC panels — intelligent motor control with communication-enabled motor protection relays
  • IPCC panels — intelligent power control with metering and protection on a communication bus
  • Draw-out MCC panels — where feeder modules must be withdrawable for maintenance without a shutdown
  • IEC 61439 panels — how design verification and routine verification work under the standard

Send Your Single Line Diagram

Email your single line diagram, load list and system fault level and our engineers will come back with a technical offer. Not sure what to send? See what a panel manufacturer needs in order to quote accurately.

Manufacturer Wisdom Techno Solutions
Works Plot 9, Nilkanth Industrial Park 1, near Kotambi Stadium, Kamrol, Kotambi, Vadodara, Gujarat 391510, India
Email connect@wisdomtechnosolutions.com
Phone +91 80002 29727
Working hours Monday to Saturday, 8:00 am to 5:00 pm IST
Delivery lead time 6 to 7 weeks from drawing approval, subject to switchgear availability

Frequently Asked Questions About MCC Panels

What is the full form of an MCC panel?
MCC stands for Motor Control Centre. It is a low-voltage assembly that brings the starters for a plant's motors together into one board — the contactors, the protection devices and the control circuits — fed from one busbar and one set of incoming gear. Centralising them gives one point of control, one place to fault-find, and one enclosure to keep protected and cool instead of a starter bolted beside every machine.
What is the difference between an MCC panel and a PCC panel?
An MCC controls motors; a PCC distributes power. The PCC sits immediately after the transformer and feeds outgoing distribution feeders, so its busbar is sized from the transformer rating and it sees the highest fault level in the plant. The MCC sits downstream and holds the starters, so its busbar is sized from the motor schedule with diversity applied. Where both functions sit in a single assembly, the board is called a PMCC.
Which motor starting methods can be built into an MCC?
Direct on line, star-delta, soft starter and VFD feeders can all sit in the same MCC. The choice per motor comes from the starting torque the driven load needs, the supply's tolerance to starting current, and how often the motor starts. It is a system decision as much as a motor decision — several DOL starters on one board can draw a starting current the transformer will not accept, so the mix should be reviewed together.
What is the difference between a fixed, plug-in and draw-out MCC?
It is about what has to happen when one feeder needs work. In a fixed MCC the feeder is isolated and unwired in place, which usually means the section is dead. A plug-in module unplugs from the busbar. A draw-out module withdraws on rails and can be swapped for a spare in minutes. Cost and space rise in the same order, so the decision comes from how expensive an unplanned shutdown is, not from the electrical design.
Which form of separation should an MCC panel have?
Form 3b and Form 4B are the usual choices, because starter feeders get worked on more often than distribution feeders and the rest of the board normally has to stay live. Form 3b separates the functional units from each other; Form 4a and 4b additionally separate each unit's terminals. Higher forms increase size and cost, so decide from the maintenance philosophy rather than copying an old tender.
How is a motor protected in an MCC feeder?
Three arrangements are common. An MPCB combines short-circuit and overload protection in one device and suits small and medium motors. An MCCB with a separate overload relay separates the two functions and gives more setting flexibility. An electronic motor protection relay adds earth fault, phase imbalance, single phasing, stall and thermal modelling, and can report over a communication bus — which is what an IMCC is built around.
What IP rating should an MCC panel have?
IP54 is the usual choice for an indoor plant room and IP65 where dust or water jets are present or the panel is outdoors. A higher IP rating reduces natural cooling, and an MCC full of starters and drives generates real heat, so the temperature rise has to be re-checked and forced ventilation with filters or a cooling unit may be needed. We build MCC panels in IP42, IP52, IP54, IP55 and IP65.
Can an MCC panel be extended later?
Only if it was designed for extension at the outset — the busbar chamber left extendable at one end, physical space reserved beside it in the electrical room layout, spare or blank compartments provided, and the main busbar sized for the future motor load rather than only today's. Extending a board that was not designed for it normally means a busbar modification and a plant shutdown.
Can we witness the FAT on our MCC before it ships?
Yes, and most customers do. Routine verification happens on every board whether anyone attends or not, but a witnessed FAT at our Vadodara, Gujarat works lets your engineer or consultant check the protection settings, the interlocks and the starter operation before the board leaves. Tell us at order stage so the date is built into the production schedule rather than added to the end of it.
What information do you need to quote an MCC panel?
The motor schedule matters most: rating, starting method and duty for every motor. Alongside it we need the single line diagram, the load list, the transformer rating and impedance, the system fault level, the required form of separation and IP rating, fixed, plug-in or draw-out construction, the control philosophy including any DCS or PLC interface, spare feeder provision, and the applicable standard with its part and year.

Other Products