What a PMCC Panel Is, and What We Build
PMCC stands for Power cum Motor Control Centre. It is one assembly doing two jobs: receiving the incoming supply from the transformer and distributing it like a PCC, and housing the starters that switch and protect the plant's motors like an MCC. Because both functions share one busbar, that busbar is sized for the distribution load and the motor load together.
Wisdom Techno Solutions builds PMCC 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 single line diagram, load list and system fault level — not adapted from a standard catalogue design.
- Busbar systems to 6300 A, copper or aluminium, Form 1 to Form 4B separation
- Built inside design-verified licensed systems — Rittal Ri4Power, C&S CX, Siemens SIEPAN
- DOL, star-delta, soft starter and VFD feeders in the same assembly
- Optional PLC integration and SCADA-enabled panels for motor control, process automation and fault diagnostics
- Modular layout with proper segregation of power and control sections, sized for future extension
- Busbars, switchgear, wiring and enclosure assembled and tested in-house, with a FAT report on every board
From a compact wall-mounted board to a large modular assembly with feeders, metering and intelligent relays, the specifications below cover our standard build. Applicable ratings are confirmed against your specification before manufacturing begins.
PMCC Panel Technical Specifications
The table below covers the standard build. Every panel is engineered against the project single line diagram, load list and fault level, so the applicable ratings are confirmed against your specification before manufacturing begins.
| Parameter | Specification |
|---|---|
| Panel type | PMCC — Power cum Motor Control Centre, combining PCC distribution and MCC motor control in one assembly |
| 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) |
| 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 |
| Busbar material | Electrical grade aluminium or copper |
| Control wiring | 660 / 1100 V grade PVC-insulated stranded copper, ferruled and numbered |
| Incoming devices | ACB or MCCB, fixed or draw-out |
| Motor feeders | DOL, star-delta, soft starter and VFD starters |
| 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 |
| Metering | Multifunction meter on incomer; feeder metering as specified |
| Communication | Modbus RTU / Modbus TCP; Profibus and Profinet on request |
| 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 |
PMCC Panel vs Separate PCC and MCC
The engineering content is the same either way — the same feeders, the same protection, the same fault level. What changes is floor space, cabling and how the plant is maintained.
| Consideration | PMCC (one assembly) | Separate PCC + MCC |
|---|---|---|
| Number of assemblies | One | Two |
| Floor space | Less | More |
| Interconnecting cable between boards | Not required | Required, and sized for the full MCC load |
| Incoming gear | One set | One set, plus the MCC incomer |
| Fault containment | Distribution and motor control share one enclosure | A fault in one board does not involve the other |
| Maintenance isolation | Harder — the whole board is one asset | Either board can be shut down independently |
| Busbar sizing | Must carry distribution and motor load together | Sized separately for each board |
| Typical fit | Compact plant rooms; motors close to the incoming point | Large plants; long distances; high availability requirements |
When a PMCC Is the Right Choice — and When It Is Not
A PMCC earns its place where floor space is the binding constraint and the motor group sits close to the incoming point. It removes the interconnecting cable run between a separate PCC and MCC, removes one set of incoming gear, and takes less area in the electrical room. On a compact plant room those three savings are real money.
It is the wrong choice where availability matters more than space. Two separate boards can be shut down independently, and a fault in one does not involve the other. A plant that cannot lose distribution and motor control at the same time should not put them in one enclosure, however tight the room is. That decision belongs at the layout stage, not after the GA is approved.
What to Send for a PMCC Panel Quotation
Send these and every offer you receive will be comparable:
- Single line diagram
- Load list with connected and demand loads, separated into distribution feeders and motor feeders
- Motor schedule — rating, starting method and duty for each motor
- Transformer rating and impedance
- System fault level
- Required form of separation and IP rating
- Indoor or outdoor installation, single front or double front
- Busbar material, enclosure material and paint shade
- Metering and communication requirements
- Spare feeder and future expansion provision
- Applicable standard, with part and year
Where the load list is not ready we can build an offer from the transformer rating and an outline feeder schedule, and refine it once the list exists.
Common Mistakes in PMCC Specifications
- Sizing the busbar on the present load. The transformer, not today's load list, sets the ceiling on a PMCC because it carries distribution and motor load together.
- Omitting the fault level from the enquiry. Without it no vendor can size the assembly correctly, and the offers stop being comparable.
- Copying the form of separation from an old tender instead of deciding it from the plant's maintenance philosophy.
- Adding VFD feeders after the design is fixed. Drives change the harmonic and thermal picture, so they belong in the enquiry.
- Leaving the ambient temperature unstated. A board verified at 35 °C and installed in a 48 °C room will not deliver its nameplate rating.
- 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 PMCC 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.
The dispatch documentation issued with every PMCC includes the FAT report, insulation resistance and dielectric withstand results as applicable, approved GA and SLD drawings, the bill of materials with makes as actually supplied, the protection settings as applied, and the punch-point list with documented closure. Customer, consultant and third-party witnessed FAT are all supported at our Vadodara works.
Related Technical Guides
Engineering guides from our team on the calculations and design decisions behind a PMCC panel:
- 2 incomer + bus coupler interlocking and 2-out-of-3 logic
- Electrical load list and transformer/incomer sizing
- How to calculate busbar size for LT panels
- Icu vs Ics vs Icw: selecting the correct short-circuit rating
- Form 1 vs Form 2 vs Form 3 vs Form 4a/4b internal separation
- DOL vs star-delta vs soft starter vs VFD: choosing a starting method
- Electrical panel heat dissipation and cooling calculation
- Electrical panel FAT and routine test checklist
Related Panel Types
If a PMCC is not the right fit for your layout, these are the alternatives we build to the same standard:
- PCC panels — when distribution and motor control are kept on separate boards
- MCC panels — motor control only, sized to the motor schedule
- Draw-out MCC panels — where feeder modules must be withdrawable for maintenance without a shutdown
- IPCC panels — intelligent power control with communication-enabled protection relays
- IMCC panels — intelligent motor control with motor protection relays on a fieldbus
- 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 |
| 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 |

