5 Steps to Design an Industrial Power Panel: Complete Engineer Guide (Updated June 2026)

The AURIC industrial city near Sambhajinagar has attracted Rs 71,343 crore in investments and 62,405 industrial jobs — and here's the thing: every single factory in that corridor runs on industrial power distribution panels. Panel design engineers are among the most in-demand professionals at companies like Hyosung (Rs 3,000 crore plant AURIC), Toyota Kirloskar AURIC, and Siemens India. In this guide, I walk you through the exact 5-step process we teach at ABC Trainings to go from a blank specification sheet to a fully documented industrial power panel that any manufacturing facility can build and certify.

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What Is an Industrial Power Panel and Why Every Factory Needs One

An industrial power distribution panel — also called a Main Distribution Board (MDB), Power Control Centre (PCC), or Motor Control Centre (MCC) — is the central electrical hub of a factory. It receives high-voltage supply from the utility transformer, steps it down and distributes it to individual production machines, motors, lighting circuits, and HVAC systems. Every panel must be designed to handle the full connected load safely, protect downstream equipment from faults, and allow controlled isolation for maintenance. What most electrical engineering students don't realise is that panel design is not just about knowing which breaker to use — it involves load studies, short-circuit calculations, busbar thermal ratings, IP protection levels, and compliance with IS 8623 and IEC 61439 standards. That's why panel design engineers command a premium in the job market.

Step 1: Load Calculation — Know Your Total Connected Load

Load calculation is the foundation of every panel design. You start by listing all connected loads: motors (3-phase induction motors rated in kW), lighting circuits (in watts), HVAC equipment, and utility outlets. For each motor, note the full-load current (FLC) from the motor nameplate or IS 12615 tables. Apply a demand factor (typically 0.6-0.8 for manufacturing) and a power factor correction if required. The total connected load gives you the incoming feeder size. For example, a panel serving 10 motors totaling 50 kW with 0.75 PF at 415V 3-phase draws a full-load current of approximately 93A — your incoming ACB must be rated for at least 125A with a short-circuit capacity rated to the prospective fault current at that bus. Use a load calculation spreadsheet and double-check against actual nameplate data — never estimate from memory.

Step 2: Breaker Selection — MCB, MCCB, and ACB Sizing

Once you have your load data, breaker sizing follows a clear logic. MCBs (Miniature Circuit Breakers) handle loads up to 63A and are used for lighting, small power, and single-phase outlets. MCCBs (Moulded Case Circuit Breakers) cover 16A to 1600A and are standard for motor feeders and sub-distribution panels. ACBs (Air Circuit Breakers) handle 1600A-6300A and are used as the main incoming breaker in large PCCs. The sizing rule: breaker rated current must be greater than or equal to the FLC of the load, and the breaker's short-circuit breaking capacity (kA) must exceed the prospective short-circuit current at the installation point. For a 415V system with a 1000 kVA transformer, the prospective fault current can be 20-25 kA — your breakers must be rated accordingly. At ABC Trainings, students practise this using real manufacturer datasheets from ABB, Siemens, and Schneider Electric.

Step 3: Busbar Sizing and Cable Sizing

Busbars carry current from the incoming breaker to all outgoing feeders inside the panel enclosure. Busbar material is almost always copper (for conductivity) or aluminium (for cost saving in large installations). Sizing is based on the current density rule: copper busbars carry 1.5-2A per mm2 of cross-section for enclosed panels with natural ventilation. For a 400A busbar: 400 divided by 1.6 equals 250 mm2 — you'd use a 25mm x 10mm copper bar. Cable sizing from panel to equipment follows IS 1554 and considers ambient temperature derating, grouping factors, and voltage drop (must be less than 2.5% for motor feeders). Always document your busbar schedule in your drawing package — this is what the panel fabricator builds from.

Step 4: Protection Devices — OLR, Earth Fault, and RCCB

Protection is what separates a safe panel from a liability. The key protection devices: Overload Relay (OLR) — protects motor windings from sustained overcurrent; set at 100-115% of motor FLC. Earth Fault Relay — detects leakage current to earth before it becomes a fire or electrocution hazard; mandatory for IS 1646 compliance. RCCB (Residual Current Circuit Breaker) — mandatory for all human-accessible circuits under IS 12640. Phase Failure Relay — protects three-phase motors from single-phasing (the most common cause of motor burnout in Indian factories). Surge Protection Device (SPD) — absorbs voltage spikes from lightning or switching events. Proper co-ordination between upstream and downstream protection devices is a key skill tested in panel design interviews at Siemens India and ABB.

Step 5: Panel Layout Design and AutoCAD Electrical Documentation

The final step is converting your engineering calculations into a documented drawing package. AutoCAD Electrical is the industry standard for this — it generates single-line diagrams (SLD), wiring diagrams, terminal diagrams, and Bill of Materials (BOM) directly from a component database. Key deliverables: Single Line Diagram (overall power flow from incomer to sub-feeders), Schematic Diagram (detailed wiring of each control and power circuit), Panel General Arrangement (GA) drawing (physical layout of breakers, busbars, and components inside the enclosure), and Cable Schedule. The GA drawing is what the fabricator uses to build the panel enclosure and mount components. EPLAN is used at Siemens India and Bosch for more complex control panels. At ABC Trainings, students complete a full panel documentation project using AutoCAD Electrical before the course ends.

Panel Design Jobs in Maharashtra 2026: Who Is Hiring and What They Pay

The job market for panel design engineers is strong across Maharashtra. In Pune: Siemens India Hinjewadi, Legrand India Hadapsar, Schneider Electric Hadapsar, ABB India Pimpri, and panel fabrication companies in Bhosari MIDC. In Sambhajinagar: Hyosung Rs 3,000 crore AURIC facility, Toyota Kirloskar AURIC, Bajaj Auto Waluj Plant (Plot G-137), Endurance Technologies (Plot E-92), and Lubrizol Rs 1,680 crore plant AURIC. In Sangli: Kupwad MIDC with 250+ manufacturing units. In Kolhapur: Bharat Forge Kagal (electrical panel team). Salary benchmarks (AmbitionBox/Glassdoor 2025-26): Fresher panel design engineer Rs 2.5L-Rs 4L; mid-level (2-4 yrs) Rs 5L-Rs 8L; senior panel designer at Siemens India or ABB Rs 10L-Rs 14L.

CMYKPY Scheme for Electrical Engineering Students

If you are an electrical engineering student in Maharashtra, the Chhatrapati Mahatma Jyotiba Phule Kaushal Parishay Yojana (CMYKPY) can provide Rs 6,000 to Rs 10,000 as a skill incentive for your AutoCAD Electrical or panel design training at ABC Trainings. The scheme is applicable for students registering under the Government of Maharashtra skill development initiative. ABC Trainings is MSME-certified and PMKVY 4.0 aligned for industrial automation and electrical engineering courses. The Industry 4.0 with AI and Industrial Automation workshop at our centres covers AutoCAD Electrical, PLC basics, panel GA design, and real project documentation. Bring your Aadhaar, bank passbook, and engineering marksheet on day one — our team handles the rest.

FAQs

What software is used for industrial panel design?

AutoCAD Electrical is the industry standard for panel design schematics and wiring diagrams. EPLAN is used at larger companies like Siemens India and Bosch for complex control panels. At ABC Trainings, we teach AutoCAD Electrical with real panel project files covering SLDs, wiring diagrams, terminal diagrams, and BOM generation.

What is the salary for a panel design engineer in Maharashtra?

Based on Glassdoor and AmbitionBox data (2025-26): Fresher panel design engineer Rs 2.5L-Rs 4L, mid-level (2-4 yrs) Rs 5L-Rs 8L, senior panel designer at Siemens India, Legrand, or ABB Rs 10L-Rs 14L. AutoCAD Electrical engineers who can also do EPLAN earn a further 15-20% premium.

Which companies hire panel design engineers in Sambhajinagar?

Hyosung (Plot AURIC), Toyota Kirloskar AURIC, Bajaj Auto Waluj (Plot G-137), Endurance Technologies (Plot E-92), Lubrizol Rs 1,680 crore plant AURIC, and Ather Energy Bidkin are key hirers of panel and electrical design engineers in Sambhajinagar and AURIC.

How long does it take to learn industrial panel design?

With a structured 3-4 month course at ABC Trainings covering AutoCAD Electrical, panel GA drawing, schematic design, load calculation, and BOM generation, most students are job-ready in one batch. We include a hands-on panel documentation project using real manufacturer specifications.