Motor Control Centre (MCC) panels
A Motor Control Centre (MCC panel) groups the starters, protection and control for every motor in a process line into one IEC 61439-2 assembly. Accu-Panels Energy is a CPRI type-tested MCC panel manufacturer in Ahmedabad, India, building fixed, semi-drawout and fully drawout MCCs from 100 A to 6300 A with DOL, star-delta, soft-starter and VFD feeders, Form 2b to Form 4b separation and IP42 to IP65 enclosures.
Each MCC is engineered from your motor list: starter type, kW rating, duty cycle, fault level and control philosophy (local, remote, PLC or SCADA). Panels are routine-tested to IEC 61439-1 and supplied with drawings, test certificates and warranty to industrial, infrastructure and renewable-energy clients across India, Africa and the Middle East.
MCC stands for Motor Control Center, and these panels serve as centralized hubs for controlling and managing the operation of electric motors within industrial settings. Their primary function revolves around providing a safe, efficient, and organized means to control motors and associated equipment.
Motor Control Center (MCC) panels come in various types, each tailored to meet specific industrial requirements. Here are some common types of MCC panels:
- Standard MCC Panels
- Intelligent MCC Panels
- Variable Frequency Drive (VFD) MCC Panels
- Soft Starter MCC Panels
- Customized MCC Panels
- PMCC Panels
- Draw-Out MCC Panels
To guarantee the safety and reliability of Motor Control Center (MCC) panels, several critical standards shape their design and construction:
IEC 61439: This standard sets out basic requirements for low-voltage switchgear and control gear assemblies. It focuses on verifying designs, construction, and testing, covering crucial aspects for MCC panels.
IEC 60947: Different parts of this standard address specific components found in MCC panels, like circuit breakers and contactors. They guarantee the safety and performance of these individual parts.
UL 845: This standard, especially relevant in North America, defines the construction and performance guidelines for MCC assemblies. It covers safety, testing procedures, and labeling requirements.
NEMA Standards: Published by the National Electrical Manufacturers Association, these standards specify the types, ratings, and performance criteria for MCC panels. They promote consistency and reliability in design.
ISO 9001-2015: While not MCC-specific, adherence to ISO 9001:2015 standards signifies a commitment to quality management systems, ensuring consistent manufacturing quality.
Local Electrical Codes and Regulations: MCC panels must align with regional electrical codes and regulations specific to their installation location. This compliance ensures safety and compatibility within the local electrical infrastructure.
Accu-Panels is setting a high standard in MCC Panel manufacturing, focusing on quality and reliability across a wide spectrum of ratings to cater to diverse industrial needs. Their range of MCC Panels boasts impressive ratings, reflecting their commitment to robust and efficient motor management systems.
The MCC Panels manufactured by Accu-Panels exhibit remarkable specifications:
Rated Current: Accu-Panels offers a comprehensive range of rated currents, starting from 100A, catering to smaller industrial setups, and scaling up to 6300A, meeting the power requirements of larger, high-demand facilities.
Fault Level Capacity: These MCC Panels are engineered to handle fault levels up to 65kA and 80kA, showcasing their capability to withstand and manage high fault currents without compromising safety or performance.
Accu-Panels’ motor control cabinets achieve an impressive protection level up to IP65. This rating signifies robust protection against dust ingress and low-pressure water jets, ensuring the internal components are shielded from external elements.
Accu-Panels excels in crafting efficient Motor Control Center (MCC) systems. These panels manage single or multiple electrical motors, enabling local or remote control for better management.
Moreover, Varied Design Options
Accu-Panels offers MCC panels in different voltages—440V, 690V & 800V—compatible with both 50Hz and 60Hz frequencies. These options suit various industrial power needs effectively.
Furthermore, Customization for Specific Needs
Accu-Panels tailors MCC panels to match specific industrial requirements precisely. Options include smaller units or more complex setups, ensuring precise alignment with different control needs.
Additionally, Focused Industries
Accu-Panels serves Chemical Power Plants, Utilities, Manufacturing, Mining, Food Beverage, Marine, and Oxygen Plants.
Lastly, Versatile Uses
Our MCC systems adeptly handle Dryer Control, Boiler Control, HVAC Plants, Manufacturing, Cement Plants, and more. This ensures seamless integration and efficient electrical management across various applications.
MCC panel technical specifications
| Parameter | Accu-Panels standard range |
|---|---|
| Design standard | IEC 61439-1 & IEC 61439-2; motor starters per IEC 60947-4-1; type-tested design at CPRI |
| Rated operational voltage (Ue) | 415 V AC, 3-phase, 50 Hz; control voltage 230 V AC / 110 V AC / 24 V DC |
| Rated current of main busbar (InA) | 100 A to 6300 A |
| Rated short-time withstand current (Icw) | 50 kA, 65 kA or 80 kA for 1 s |
| Starter types | DOL up to 45 kW, star-delta up to 250 kW, soft starter and VFD feeders for larger or variable-speed drives; reversing and two-speed starters |
| Motor protection | Thermal or electronic overload relays, MPCB / MCCB short-circuit protection, single-phasing preventers, earth-fault relays; type 2 coordination on request |
| Form of internal separation | Form 2b, 3b, 4a or 4b per IEC 61439-2 (Form 4b for drawout and intelligent MCCs) |
| Construction | Fixed, semi-drawout or fully drawout modules; single-front or double-front; top or bottom cable entry |
| Degree of protection (IEC 60529) | IP42 / IP54 indoor; IP55 / IP65 outdoor or dusty environments |
| Control and communication | Local / remote selector, PLC I/O, Modbus RTU / TCP or Profibus for intelligent MCC (IMCC), SCADA-ready metering |
| Enclosure | 2.0 mm CRCA frame, 1.6 mm doors; 7-tank pre-treatment, powder coating; C5 finish for corrosive sites |
| Routine tests | IEC 61439-1 clause 11: dielectric 2.5 kV / 1 min, insulation resistance, wiring, functional and interlock tests, starter operation check |
Fixed, drawout or intelligent MCC: which one?
A fixed MCC is the most economical choice for plants with planned shutdown windows. A drawout MCC lets a faulty starter module be withdrawn and replaced while the busbar and neighbouring motors stay live, which is why continuous-process industries specify it. An intelligent MCC (IMCC) adds smart motor management relays and fieldbus communication so each motor reports current, thermal state and trips to the plant SCADA. Accu-Panels builds all three on the same type-tested platform.
Typical applications
- Process plants: pumps, agitators, compressors, conveyors and crushers in chemical, pharma, food and cement industries
- Water and wastewater pumping stations and effluent treatment plants
- HVAC and building services in hospitals, malls and commercial towers
- Textile, plastics and packaging machinery lines
- Fed from an upstream PCC panel; combined VFD and soft-starter panels and APFC panels available for the same project
Why buyers specify Accu-Panels MCC panels
- CPRI type-tested design to IEC 61439 — see our CPRI report explained.
- ISO 9001:2015 and CE-marked manufacturing with witnessed factory acceptance tests.
- Starter engineering from your motor list, including type 2 coordination charts from the switchgear maker.
- Documentation pack: GA, schematics, terminal plans, BOM, routine test and warranty certificates.
Frequently asked questions
What is the difference between an MCC and a PCC panel?
An MCC controls and protects motors with starters; a PCC distributes power from the transformer or DG to sub-panels and heavy loads. Read What are MCC and PCC panels?
When should I choose a star-delta starter over DOL?
DOL is used for small motors (typically up to about 45 kW on a strong supply). Star-delta reduces starting current to roughly one-third and suits larger motors with light starting loads. Heavy or variable-speed duties call for soft starters or VFDs.
Can the MCC communicate with our PLC or SCADA?
Yes. We supply hard-wired PLC I/O, Modbus RTU / TCP or Profibus intelligent relays, and SCADA-ready multifunction metering in the incomer section.
What is type 2 coordination?
Under IEC 60947-4-1, type 2 coordination means the contactor and overload relay remain serviceable after a short-circuit cleared by the upstream protection. We select the breaker, contactor and relay combination from the manufacturer’s tested coordination tables.
What is the lead time for an MCC panel?
Typically 4 to 8 weeks after drawing approval depending on the number of feeders and switchgear delivery. Send your motor list for a firm schedule.
Have a motor list or SLD? Send it to our engineering team for a techno-commercial offer.
