What standards apply to custom engineered panels for pharmaceutical plants?

The primary assembly standard is IEC 61439-2 for power switchgear and controlgear assemblies. Depending on the application, IEC 61439-3 may apply to distribution boards and IEC 61439-6 to busbar trunking interfaces. Component devices should comply with IEC 60947 series standards, for example MCCBs, ACBs, contactors, overload relays, and motor starters. If the panel is installed in or near a classified area, IEC 60079 becomes relevant. For arc resilience requirements, IEC 61641 may be specified. In pharmaceutical projects, these standards are typically paired with GMP documentation, FAT/SAT records, and traceability to the user requirement specification.

What enclosure material is best for pharmaceutical control panels?

Stainless steel is the preferred choice for many pharmaceutical applications, especially 304 or 316L in cleanrooms, washdown zones, and utility areas with aggressive cleaning agents. 316L offers better corrosion resistance where disinfectants, humidity, or saline exposure are concerns. Where the panel is located in a non-critical electrical room, epoxy-coated mild steel may be acceptable if the environmental rating is sufficient. The enclosure should typically be IP54, IP55, or IP66 depending on exposure, with smooth external surfaces, sealed cable entries, and condensation control. Hygienic design features help reduce dust retention and support GMP cleaning practices.

How are VFDs and harmonic filters used in pharmaceutical panel design?

VFDs are widely used on pumps, fans, mixers, and compressors to improve process control and energy efficiency. In pharmaceutical facilities, they must be integrated carefully to avoid interference with instrumentation and control networks. Harmonic filters, line reactors, and EMC practices are often necessary to limit distortion and reduce nuisance trips. The panel should provide segregated routing between power and low-level analog signals, shield termination for motor cables, and proper earthing. For sensitive process areas, designers may also use active harmonic filters or multi-pulse arrangements. All devices should be selected and coordinated in accordance with IEC 60947 and the project’s power quality targets.

Can custom engineered panels be used in cleanrooms?

Yes, but the design must be adapted for cleanroom compatibility. In cleanrooms, panels are usually installed outside the most critical classified spaces whenever possible. If installed inside, the enclosure should have smooth, cleanable surfaces, minimal particle traps, concealed fasteners where practical, and suitable ingress protection. Stainless steel construction is common, along with flush-mounted HMI devices, sealed door operators, and low-dust ventilation strategies. The layout should minimize maintenance interventions and support validated cleaning procedures. The electrical design must still meet IEC 61439 requirements for temperature rise, clearances, short-circuit withstand, and routine verification, while the mechanical design supports contamination control.

What short-circuit rating is typical for pharmaceutical distribution panels?

Short-circuit ratings depend on the upstream transformer size, feeder arrangement, and available fault level, but pharmaceutical panels are commonly engineered from 25 kA to 100 kA. Smaller utility or machine panels may be rated 25 kA or 36 kA, while main distribution sections can require 50 kA, 65 kA, or even 100 kA at 400/415 V. The assembly must be verified under IEC 61439-2 for short-circuit withstand strength, including busbar supports, protective device coordination, and enclosure integrity. Where selectivity and continuity of service are important, ACBs or coordinated MCCBs are often used with documented discrimination studies.

What is the difference between MCC, PLC, and VFD sections in a pharma panel?

An MCC section primarily distributes power to motors through starters, contactors, overloads, and protection devices for pumps, agitators, and utility loads. A PLC section contains the automation controller, I/O modules, network switches, safety relays, and HMI interfaces for batch control, alarms, and interlocks. A VFD section houses variable-speed drives, input/output isolation, cooling provisions, EMC measures, and often line reactors or harmonic mitigation. In pharmaceutical plants, these sections may be combined in one custom engineered panel, but segregation, wiring discipline, and service access are essential to meet reliability and validation expectations under IEC 61439 and IEC 60947.

Do pharmaceutical panels require hazardous area compliance?

Not always, but the requirement depends on the installation location and process media. If the panel is installed in a non-hazardous electrical room, IEC 60079 may not directly govern the assembly. However, if the panel is near solvent handling, ethanol recovery, powder transfer, or other classified areas, the design must address zoning, segregation, or certified protection methods. Often the safest solution is to locate the panel outside the hazardous zone and use suitable signal barriers, remote I/O, or Ex-rated field devices. The panel builder should confirm the area classification early in the project to avoid costly redesign.

What documentation should be supplied with a pharmaceutical panel?

A pharmaceutical panel should be delivered with a complete documentation package: GA drawings, single-line diagrams, wiring schematics, terminal plans, BOM with manufacturer part numbers, device data sheets, short-circuit and thermal verification records, and routine test certificates. For regulated projects, FAT procedures, SAT checklists, cause-and-effect matrices, and software backups are also important. If the panel supports validated systems, traceability to the URS and change-control records should be included. This documentation supports commissioning, maintenance, audits, and future lifecycle management, and it aligns well with IEC 61439 verification requirements and GMP expectations.

Industry + Panel

Custom Engineered Panel for Pharmaceuticals

Custom Engineered Panel design considerations and requirements for Pharmaceuticals applications, addressing industry-specific compliance standards.

Overview

Custom Engineered Panel assemblies for pharmaceuticals must be designed around process reliability, hygienic compliance, and lifecycle traceability. In drug manufacturing, utility and process skids often require control panels for HVAC, purified water systems, CIP/SIP stations, compressed air, chilled water, and packaging lines. The panel architecture is typically built to IEC 61439-2 for power switchgear and controlgear assemblies, with verification of temperature rise, dielectric properties, short-circuit withstand, and creepage/clearance distances. Where the enclosure is used for building services or terminal distribution, IEC 61439-3 or IEC 61439-6 may apply depending on the assembly function. Component selection generally includes MCCBs, ACBs, contactors, motor protection circuit breakers, VFDs, soft starters, APFC capacitors, surge protective devices, and multifunction protection relays, all coordinated under IEC 60947 product standards. Pharmaceutical environments place strong emphasis on cleanliness, corrosion resistance, and contamination control. Panel enclosures are often stainless steel 304 or 316L, powder-coated mild steel in non-critical utility rooms, or IP54 to IP66 housings with gasketed doors and smooth, cleanable surfaces. For washdown-adjacent areas, sealed cable entries, hygienic glands, sloped tops, and internal condensation management are common. If the panel is located near classified areas, the design must consider IEC 60079 hazardous area requirements, including appropriate segregation or location outside the classified zone. For fire and smoke resilience in specific plant rooms, IEC 61641 arc fault containment testing may be relevant for metal-enclosed assemblies. Electromagnetic compatibility is also important, especially where VFDs, servo drives, and PLC I/O coexist with precision instrumentation such as pressure, flow, conductivity, and temperature transmitters. Good practice includes segregated cable ducts, separate power and control compartments, EMC glands, shield termination strategy, line reactors, harmonic filters, and properly rated earthing bars. Many pharmaceutical facilities also require remote monitoring through Ethernet-based PLCs, SCADA, and historians, with interfaces to BMS and MES systems. Common platforms include Siemens, Schneider Electric, ABB, and Eaton controlgear with safety relays and networked protection devices. Typical panel configurations include MCC sections for process pumps and agitators, VFD sections for variable-speed utilities, PLC automation sections for batch control, MCCB feeder sections for packaged equipment, and standalone soft starter panels for large fans and compressors. Rated currents can range from 63 A terminal feeders to 4000 A distribution assemblies, with prospective short-circuit ratings commonly engineered from 25 kA up to 100 kA depending on upstream fault levels and coordination philosophy. Form of separation is selected to balance maintainability and contamination risk, with Form 2 to Form 4 arrangements used where service continuity and segregation are required. For validated pharmaceutical operations, documentation packages should include type-test evidence, routine test records, wiring schematics, BOM traceability, device datasheets, and FAT/SAT protocols aligned with GMP expectations and project URS requirements. In practice, a well-engineered pharmaceutical panel is not only an electrical assembly but a compliance asset. It must support hygienic production, minimize downtime, simplify maintenance, and integrate safely with clean utilities, batch automation, and plant-wide monitoring systems while meeting the applicable IEC and site-specific regulatory framework.

Key Features

Custom Engineered Panel configured for Pharmaceuticals 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

Panel Type	Custom Engineered Panel
Industry	Pharmaceuticals
Base Standard	IEC 61439-2
Environment	Industry-specific ratings

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Pharmaceuticals

Custom Engineered Panel

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