MCC Panels

Power Control Center (PCC) for Data Centers

Power Control Center (PCC) assemblies engineered for Data Centers applications, addressing industry-specific requirements and compliance standards.

Power Control Center (PCC) for Data Centers

Overview

Power Control Center (PCC) assemblies for data centers are engineered as mission-critical low-voltage switchboards that sit at the heart of facility power architecture, typically feeding downstream PDUs, UPS systems, mechanical loads, lighting, and critical auxiliary services. In modern Tier-rated facilities, the PCC may interface with utility incomers, diesel generator plant, static transfer switches, automatic transfer schemes, and bus couplers to support N+1 or 2N resilience strategies. Typical main incomer devices include air circuit breakers (ACBs) up to 6300 A and molded case circuit breakers (MCCBs) for feeder protection, with busbar systems selected for high short-circuit withstand and peak withstand ratings to match prospective fault levels commonly ranging from 50 kA to 100 kA or higher depending on site studies. For enhanced continuity, PCC sections often incorporate protection relays, multifunction meters, bus-tie automation, and communications gateways integrated with BMS/EPMS platforms using Modbus, Ethernet/IP, or BACnet where required. Design and verification of these assemblies should align with IEC 61439-1 and IEC 61439-2 for low-voltage switchgear assemblies, with additional consideration for IEC 61439-6 where busbar trunking interfaces are used upstream or downstream. Component selection must also conform to IEC 60947 for circuit breakers, contactors, motor starters, and switching devices. In data center environments, the enclosure and internal construction should support appropriate IP ratings, controlled ventilation, anti-condensation provisions, and temperature management, especially when the room is exposed to high heat density or restricted airflow. Where the installation environment includes fire-rated or smoke-sensitive zones, material selection and cable segregation are critical, and if the facility is classified as a hazardous area for adjacent utility spaces, IEC 60079 requirements may become relevant. For standby generator rooms or exhaust-adjacent locations, designer awareness of IEC 61641 internal arc fault test considerations helps support safer compartmentalization and operator protection. A well-designed PCC for data centers usually includes multiple functional sections: utility incomer, generator incomer, bus coupler, UPS feeder section, mechanical feeder section, capacitor bank or harmonic filter section, and metering/SCADA compartment. Forms of separation such as Form 2, Form 3b, or Form 4b can be specified depending on maintainability, operational continuity, and arc-flash risk strategy. In high-availability facilities, front access maintenance, draw-out ACBs, feeder isolation shutters, cable alley segregation, and redundant control power supplies are common engineering choices. Harmonic distortion from UPS rectifiers, VFDs serving chillers and CRAH/CRAC systems, and soft starters on pumps requires attention to thermal derating, neutral sizing, and power factor correction coordination to avoid resonance and nuisance tripping. Patrion’s PCC assemblies for data centers are typically custom-engineered in accordance with project one-line diagrams, load profiles, fault level calculations, and uptime targets. They can be delivered with intelligent protection relays, real-time energy monitoring, feeder status indication, auto-transfer logic, and remote diagnostics for integration into facility monitoring architecture. Whether the requirement is a compact main distribution PCC for edge data centers or a multi-section main switchboard for hyperscale campuses, the design focus remains the same: safe fault containment, service continuity, maintainable architecture, and verified compliance with IEC standards under real operating conditions.

Key Features

  • Power Control Center (PCC) configured for Data Centers requirements
  • Industry-specific environmental ratings and protections
  • Compliance with sector-specific standards and regulations
  • Optimized component selection for industry applications
  • Integration with industry-standard control and monitoring systems

Specifications

PropertyValue
Panel TypePower Control Center (PCC)
IndustryData Centers
Base StandardIEC 61439-2
EnvironmentIndustry-specific ratings

Other Panels for Data Centers

Main Distribution Board (MDB)

Primary power distribution from transformer to sub-circuits. Rated up to 6300A. Houses main incoming breaker, bus-section, and outgoing feeders.

Automatic Transfer Switch (ATS) Panel

Automatic changeover between mains and generator/UPS. Open or closed transition, with or without bypass.

Power Factor Correction Panel (APFC)

Automatic capacitor switching for reactive power compensation. Thyristor or contactor-switched, detuned or standard configurations.

Metering & Monitoring Panel

Energy metering, power quality analysis, and multi-circuit monitoring with communication gateways.

Busbar Trunking System (BTS)

Prefabricated busbar distribution per IEC 61439-6. Sandwich or air-insulated, aluminum or copper.

DC Distribution Panel

DC power distribution for battery systems, solar installations, telecom, and UPS applications. MCCB/fuse-based DC protection.

Custom Engineered Panel

Bespoke panel assemblies for non-standard requirements — special ratings, unusual form factors, multi-function combinations.

Other Industries Using Power Control Center (PCC)

Industrial Manufacturing

MCC, PCC, VFD panels, MDB, APFC, automation panels, soft starters, harmonic filters, capacitor banks — full range

Oil & Gas

Ex-rated panels, MCC, PCC, VFD, generator control, soft starters, ATEX/IECEx compliance

Mining & Metals

Rugged MCC, PCC, VFD panels, generator panels, soft starters, harmonic filters

Frequently Asked Questions

The primary design and verification standard is IEC 61439-1 and IEC 61439-2 for low-voltage switchgear assemblies. If the PCC interfaces with busbar trunking systems, IEC 61439-6 may also apply. For breakers, contactors, and starters inside the PCC, IEC 60947 governs the relevant device requirements. In data center projects, compliance is not only about hardware selection but also temperature-rise limits, dielectric performance, short-circuit withstand, and internal separation. A properly engineered PCC should be validated against the project’s prospective fault current, continuous current, and operational duty. Patrion typically bases PCC engineering on the client’s single-line diagram, load study, and redundancy philosophy.
The required short-circuit rating depends on the utility fault level, transformer size, generator contribution, and PCC location in the power chain. In practice, data center PCC assemblies are often specified with busbar withstand ratings from 50 kA to 100 kA for 1 second, with peak withstand values coordinated to the protective devices. ACBs and MCCBs must have adequate Icu/Ics ratings per IEC 60947-2, and the assembly must pass the relevant IEC 61439 short-circuit verification method. Because generator sets and UPS systems can alter fault-current behavior, the final rating should be confirmed by coordination and discrimination studies before production.
A data center PCC commonly includes main incomers with ACBs, outgoing feeders with MCCBs, bus couplers, metering modules, protection relays, and communication gateways. Depending on the power architecture, it may also include feeders for UPS input/output, generator synchronizing interfaces, capacitor banks or active harmonic filters, and supply sections for chillers, CRAH/CRAC units, lighting, and support loads. Where process continuity is critical, automatic transfer switching, remote status indication, and supervisory controls are integrated. Component selection should consider load diversity, harmonic currents, maintainability, and the required upstream/downstream selectivity.
The choice depends on maintainability and operational risk. For many data centers, Form 3b or Form 4b separation is preferred because it improves segregation between busbars, functional units, and outgoing terminals, reducing the likelihood that a fault in one feeder affects the whole assembly. Form 4b is often selected where maximum service continuity and safer maintenance access are priorities. The final form must still comply with IEC 61439-2 construction requirements and be coordinated with cable routing, arc-flash strategy, and operating procedures. In critical facilities, rear access avoidance and segregated cable alleys are also common design practices.
Harmonic management is essential because UPS rectifiers, VFD-driven pumps, and cooling equipment can distort voltage and increase neutral heating. The PCC design may include oversized neutral conductors, K-rated or low-loss transformers upstream, active harmonic filters, detuned capacitor banks, and proper busbar thermal derating. Metering should monitor total harmonic distortion, power factor, and current imbalance. In accordance with IEC 61439 temperature-rise requirements, the panel must be designed so harmonic heating does not exceed component limits. Coordinated engineering prevents nuisance tripping, resonance, and accelerated insulation aging.
Yes. Modern PCC assemblies are commonly equipped with multifunction meters, intelligent relays, communication modules, and dry contacts for integration with EPMS and BMS platforms. Typical protocols include Modbus RTU, Modbus TCP, and sometimes BACnet or IEC 61850 at the facility level, depending on the control architecture. Integration allows real-time monitoring of current, voltage, power, energy, breaker status, alarms, and event logs. This is especially valuable in data centers where uptime, alarm response, and capacity planning depend on accurate power visibility. Patrion can configure the PCC for remote diagnostics and SCADA-ready operation.
A data center PCC should be built for controlled indoor conditions, but it still needs protection against dust ingress, condensation, and heat accumulation. Typical requirements include IP31, IP42, or higher depending on the room environment, anti-condensation heaters where needed, forced ventilation or air-conditioned switchroom support, and corrosion-resistant enclosure finishes. If the switchroom is near generators or service corridors, additional thermal and acoustic considerations may apply. The enclosure design must preserve temperature-rise compliance under IEC 61439 while also supporting maintainability and cable management. Environmental stability is critical for long-term reliability.
An MDB is generally the main distribution point for a facility, while a PCC is more application-oriented and often includes control, monitoring, transfer, and motor-related feeder coordination in addition to distribution. In data centers, the PCC may serve as the main power hub for utility, generator, UPS, and mechanical systems, with a stronger focus on operational control, protection coordination, and system availability. It often includes ACB incomers, bus couplers, metering, and automation logic beyond a standard distribution board. The exact boundary depends on the project philosophy and one-line diagram, but PCCs typically offer more integrated power control functionality than basic MDBs.

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