Based in Elk Grove Village, IL, Advance Switchboard Distribution (ASD) is a UL-listed manufacturer of power distribution systems. The company specializes in designing and building switchboards, panelboards, and related electrical equipment for diverse markets, including utilities. ASD highlights its American-made products, deep team experience, and fast lead times.
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Switchboard Manufacturers
Last updated: February 2026
This directory lists 99 switchboard manufacturers across the United States, from custom industrial power distribution centers to modular commercial building main switchboards.
Buyers in this category are typically solving critical problems related to managing high-amperage power distribution, ensuring robust system protection, and accommodating evolving load requirements. They need solutions that can reliably handle demanding short-circuit current ratings (SCCR), integrate sophisticated protective relaying, and provide flexible busway configurations for efficient power delivery across diverse environments.
Suppliers in this space range from specialized custom fabricators focused on highly engineered industrial applications to larger OEM panel builders providing standardized or semi-customized commercial solutions. Distinguishing factors include their expertise in specific applications, their in-house engineering capabilities for complex single-line diagrams, and their ability to integrate advanced metering and communication protocols beyond just basic circuit protection.
To ensure an efficient sourcing process, buyers should prepare detailed single-line diagrams, comprehensive load schedules, and clear specifications for environmental conditions including required NEMA enclosure ratings. Manufacturers expect precise input on desired fault interruption levels, specific breaker types, and any unique control or automation integration needs, along with clear timelines for critical components.
A significant trend impacting this category is the accelerated shift towards intelligent and connected switchboards. Manufacturers are increasingly integrating smart meters, power quality monitoring, and advanced communication modules (e.g., Modbus, Ethernet/IP) directly into the switchboard architecture, enabling remote monitoring, predictive maintenance, and seamless integration with building management and energy management systems.
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Company Directory
99 companies nationwide
PwrQ (formerly Allied Power and Control) specializes in engineering and manufacturing power distribution products. They produce low voltage UL891 switchboards, panel boards, and switchgear with ratings up to 600Vac and 6000 Amps. The company serves data centers, renewable energy, and mission-critical industrial facilities.
Based in Ayer, MA, Applewood Controls, Inc. designs and builds custom industrial electrical control panels and automation systems. Established in 1983, they provide turnkey solutions for various applications, including material handling, assembly machines, and batch processing. They offer installation, programming, and precision control panels.
Based in Fort Lauderdale, FL, Atlas Marine Systems manufactures high-quality marine electrical distribution equipment. The company specializes in producing TecPOWER® switchboards and ShorPOWER® marine frequency converters, offering comprehensive power management and electrical distribution system solutions for yachts and boating applications.
Based in Krugerville, TX, BCS Switchgear manufactures UL-891 compliant switchboards with capacities from 1600 to 4000 amps. They provide flexible breaker options and ensure faster delivery. The company also specializes in switchgear manufacturing, repair, retrofitting, and supplying replacement parts for modernizing aging electrical systems.
Gus Berthold Electric Co. custom manufactures a complete line of industrial and commercial quality switchboards. These electrical distribution and control systems are listed by Underwriters Laboratories Inc., meeting rigorous standards. The company provides reliable, purpose-built electrical switchgear solutions for industrial and commercial sector clients.
Based in Sacramento, CA, Butcher Power Products manufactures utility-grade low and medium voltage switchboards and switchgear. They offer custom-built and configurable Ready To Go (RTG) solutions for mission-critical environments, meeting EUSERC and UL 891 standards with short lead times.
California Electrical Services is an industrial electrical contracting firm specializing in the design and fabrication of electrical control panels and systems. They offer comprehensive services including installation, automation, integration, and maintenance for a wide variety of industrial applications, primarily serving the West Coast.
Based in Ontario, CA, California Switchgear Manufacturing provides UL Certified low voltage switchgear. As a Siemens OEM Approved Partner, they specialize in custom panelboard and busbar manufacturing. Offering design, retrofitting, and upgrades, they serve data centers, commercial, renewable energy, utility, and industrial clients.
Cates, based in San Antonio, TX, specializes in manufacturing custom industrial control panels. As a UL 508A & UL 698A certified panel builder, the company offers OEM volume production with 40 years of experience, serving various industrial clients with high-quality and reliable control solutions.
Based in Benicia, CA, CKC Automation specializes in manufacturing precision-engineered control panels for industrial applications. The company builds solutions to UL 508A and ISO quality standards, providing reliable, compliant, and cost-effective electrical control systems for various automation needs.
Coastal Power Systems provides custom switchboards, panelboards, and switchgear lineups for offshore, commercial, and industrial applications. They specialize in circuit breaker sales, repairs, and retrofits. The company offers in-house fabrication of steel and copper components, ensuring quality and durability for various electrical systems.
Common Ground Marine manufactures custom marine, industrial, and distribution circuit breaker and switch panels. They also produce Caterpillar plug-in engine control harness systems. The company offers a range of parts including Hubbell, VDO, Aetna, Deutsch, and Salzer rotary selector switches, as well as UL489 circuit breakers.
Based in Ontario, CA, DEI Power Solutions manufactures UL 891 low voltage switchgear and custom electrical panelboards. The company also offers custom busbar manufacturing, design, and engineering services for reliable electrical infrastructure. They focus on precision, quality, and efficient lead times, catering to B2B industrial and commercial clients.
Based in Brooklyn Park, MN, Design Ready Controls Inc. specializes in the manufacturing of superior control panels and wiring products. The company leverages engineering expertise, proprietary processes, and advanced production facilities to provide competitive advantages in product quality, speed to market, and cost management for its clients.
DMM Packaging, based in Kingsburg, CA, specializes in designing and installing custom industrial control panels and motor control centers. They provide solutions for controlling motors and automation equipment. The company also manufactures a range of high-quality packaging machinery, serving industries like craft beer, food, and dairy applications.
Based in Minneapolis, MN, Electro-Mechanical Industries (EMI) designs and manufactures custom electrical enclosures and metal clad switchgear. They provide tailored solutions for commercial, industrial, mining, mission critical, and renewable energy electrical projects, focusing on industry-specific needs.
Based in Sacramento, CA, Electrical Design Technology, Inc. specializes in infrastructure electrical engineering. They provide innovative power distribution equipment, including switchgear, panel boards, and various substations, for private and government institutions. Their solutions support power generation, transmission, and distribution systems with a focus on efficiency.
Based in Houston, TX, Electronic Power Design, Inc. (EPD) manufactures custom-designed, low-voltage switchboards. Their 250,000 sq ft facility produces UL 891 certified switchboards engineered for high-density power distribution up to 5000A. EPD provides built-to-order electrical solutions for diverse mission-critical applications.
Based in East Peoria, IL, Enercon Engineering designs and manufactures precision-engineered switchgear, control panels, and power packaging systems. They offer UL 508A, UL 698A, and UL 891 certified solutions, serving data centers, defense, utilities, and other critical industries nationwide.
Based in Brookfield, WI, Engineering Specialists Inc. is a CSIA-certified systems integrator and panel builder with 50 years of experience. They provide turn-key industrial automation and control solutions, specializing in the design, build, test, and installation of custom control panels for diverse industrial projects.
Based in Corona, CA, ESL Power Systems, Inc. designs and manufactures custom-engineered electrical solutions, including control panels and electrical distribution equipment. They serve diverse applications such as intermodal, shore power, emergency power, entertainment venues, refrigerated transport, shipyards, and wayside power.
Based in Murrieta, CA, Fireblast Global is a UL 508A certified panel building facility specializing in industrial control system design. The company offers product manufacturing and precision fabrication services for industrial, military, and first responder applications. They provide complete manufacturing and design support.
Based in Lake Mary, FL, JST Power Equipment manufactures innovative electrical power equipment. The company specializes in medium voltage switchgear, transformers, and packaged unit substations, supporting primary and secondary power distribution networks. They also provide field services for their broad product portfolio.
Based in Lincolnshire, IL, LSElectric America manufactures Susol UL low voltage arc-resistant switchgear. This specialized equipment provides superior electrical distribution and protection for facilities. The company focuses on direct production of robust power management solutions for industrial and commercial applications in the switchboard sector.
Based in York, NY, Martin Energy Group provides custom switchgear solutions and integrated control packages for complex energy systems. They design, build, and deliver complete energy systems, including E-Houses, microgrids, and battery energy storage systems, for reliable and efficient power generation.
Based in Sussex, WI, McIver Engineering & Controls designs and manufactures custom industrial control panels and comprehensive automation solutions. They specialize in engineered systems for reliability and safety, including robotic automation and palletizing solutions. As a FANUC ASI, McIver delivers integrated industrial automation to optimize client operations.
Based in Lake Park, FL, META Power Solutions manufactures a new generation of modular, gas-insulated switchgear and switchboards. They provide medium voltage switchgear, E-Houses, and transformers, serving applications in solar, utilities, bitcoin mining, and EV charging stations.
Milbank Manufacturing Company is a US-based electrical product manufacturer specializing in a wide range of electrical distribution and control solutions. They provide NEMA 3R and NEMA 4X commercial switchboards, switchgear, enclosures, panelboards, and metering equipment. Serving commercial, industrial, and residential applications, Milbank supports electrical infrastructure projects.
Modular Power & Data (MPD) manufactures UL listed industrial and commercial quality switchboards. They provide customized and standardized power distribution solutions, including panelboards, industrial control equipment, remote power panels, and generator docking stations. MPD focuses on high technical capabilities and efficient lead times for its modularized infrastructure products.
Based in Denton, TX, MoonShot manufactures custom UL 508A and UL 891 compliant switchboards, PDUs, and modular data centers. The company offers comprehensive engineering and construction services, providing robust power distribution solutions for various projects. They focus on delivering custom-engineered and constructed systems.
Panelmatic designs and manufactures high-performance electrical and control systems, including precision-built control panels, integrated control houses, and turnkey arc-resistant switchgear. With over 60 years of experience, the company serves industrial, utility, renewable energy, and data center markets.
PanelShop.com is an engineering solutions company specializing in the design and manufacturing of custom electrical control panels and products. They provide comprehensive services for industrial applications, focusing on delivering tailored control systems to meet specific client requirements. Their expertise covers precise fabrication and assembly of various electrical components.
Based in Hialeah Gardens, FL, Paneltronics designs and manufactures custom Power Distribution Units, electrical control panels, and assemblies. They provide waterproof switch panels, rack mount panels, and custom OEM solutions for diverse industries, including military, marine, heavy truck, and construction applications.
Point Eight Power designs and manufactures custom electrical control and distribution systems, including high-quality switchgear, generator controls, and power control building packages. Serving industries like Marine, Oil & Gas, Data Centers, and Utilities, they provide reliable power solutions globally.
Based in Arlington, WA, Process Solutions designs and manufactures high-quality UL 508A-Listed custom control panels. The company serves a broad range of industries and applications, providing specialized electrical control solutions with its in-house expertise and manufacturing capabilities.
Based in Bakersfield, CA, RESA Power specializes as a switchgear manufacturer. They deliver new and re-manufactured low, medium, and high voltage switchgear along with comprehensive electrical distribution equipment. The company supports industrial and commercial clients with their power infrastructure needs.
Romtec Utilities engineers and builds custom package pumping systems for various water types, including sewer lift stations, stormwater, and booster applications. They provide design and supply for complete pumping systems, integrating motor control centers and other essential components into tailored solutions for industrial and municipal clients.
S&C Electric Company is a global provider of equipment and services for electric power systems. Based in Chicago, IL, the company designs and manufactures critical components such as pad-mounted underground distribution switchgear, fault interrupters, and reclosers. They specialize in automated restoration and feeder protection devices for utility applications.
Scott Manufacturing Solutions provides custom medium voltage enclosures and switchgear. They design and manufacture turnkey solutions to exact specifications, integrating components for padmount and overhead equipment. Products are built to withstand corrosion and meet national requirements like NEMA and ANSI/IEEE, ensuring durable and dependable electrical component protection.
Based in Crosby, TX, Seaboard Controls specializes in designing and manufacturing custom marine switchboards and control panels for various vessels. Established in 1981, the company also provides LV & MV switchboard design for industrial and oil & gas sectors, along with services like PLC/HMI programming and 24-hour field support.
Based in Elmhurst, IL, Simplex System Controls specializes in manufacturing custom industrial electric and pneumatic control panels. Their UL-certified panels are built with precision, engineered to deliver top manufacturing performance for various industrial applications. The company provides comprehensive control solutions for diverse needs.
Based in Anaheim, CA, South Coast Controls specializes in the manufacturing, building, and engineering of custom control panels. They provide tailored solutions for industrial control panels, custom control panels, and lighting control panels, serving a wide array of applications across various industries.
Sparkstone Electrical Group manufactures fully engineered, tested, and field-proven power distribution equipment. Produced in the USA, their products adhere to UL, ANSI, and IEEE standards, serving industrial and commercial applications requiring reliable power distribution solutions.
Based in Pasadena, TX, Spike Electric Controls manufactures custom-engineered medium and low voltage switchgear, UL 891 switchboards, and power distribution solutions. They provide safe, innovative energy products up to 38kV, including motor control centers and control panels, for industrial applications.
Based in Belding, MI, Stahlin manufactures premium fiberglass, polycarbonate, and PVC non-metallic enclosures. These innovative products protect vital electrical equipment across diverse industries, including electrical equipment manufacturing, communications, and utilities. Stahlin offers in-stock and customizable solutions adhering to NEMA, UL/CSA, and IEC standards, all made in the USA.
Based in Champlin, MN, States Manufacturing Corporation specializes in designing and manufacturing both custom and standard switchboard solutions. The company provides electrical switchboards tailored to meet specific customer requirements for diverse applications.
Tesco Controls is a UL-approved Original Equipment Manufacturer (OEM) specializing in low-voltage electrical switchboards for both indoor and outdoor applications. The company designs, manufactures, and integrates electrical and process control systems for water, wastewater, transportation, lighting, and renewable energy applications.
Based in San Leandro, CA, Trayer Engineering Corporation manufactures quality electrical distribution switchgear. They specialize in ultra-reliable, high-quality, low maintenance, stainless-steel medium voltage switchgear. Established in 1962, their products are assembled in the USA.
Based in Brea, CA, Trimax Systems designs and implements complete process control systems. They operate a UL 508a and UL 698a/b certified panel fabrication shop, providing industrial control panels and turn-key solutions. Serving multiple industries, Trimax delivers reliable systems with a focus on efficient operation and reduced maintenance.
Based in Chesapeake, VA, Sumitomo Drive Technologies designs and provides UL 508A industrial control panels. These custom-engineered panels ensure efficient, reliable, and safe control for diverse industrial systems. They meet specific application requirements, offering robust solutions for various industries.
Based in Seattle, WA, US Electric provides turnkey marine electrical services and engineering. They specialize in designing, constructing, and installing custom-built switchboards and control panels for commercial vessels. The company offers complete electrical solutions, managing projects from initial design through to commissioning and completion.
Based in Westerville, OH, Vertiv specializes in manufacturing comprehensive Medium Voltage and Low Voltage switchgear solutions. They provide a single-source, integrated approach to power distribution, delivering robust and reliable electrical power management systems. Vertiv supports critical infrastructure and diverse industrial applications.
Based in San Jose, CA, Applied Engineering, Inc. is a UL508A registered contract manufacturer specializing in custom engineered power distribution units (PDUs) and control panels. They provide precision electromechanical manufacturing solutions and clean room assembly for OEM clients in clean energy, robotics, medical, and semiconductor industries.
Based in Auburn Hills, MI, MINO Automation USA, Inc. provides digital manufacturing services and full-stack standardization solutions. The company delivers cutting-edge intelligent manufacturing solutions, including high-efficiency smart production lines and advanced digital operational services, encompassing power distribution panels for various industrial sectors.
Based in Rochester Hills, MI, MIS Controls manufactures turnkey industrial and custom control panels, along with enclosures and kiosk control systems. They serve the machine tool and manufacturing industries, focusing on quality, timely delivery, and competitive pricing for their panel assemblies.
Based in Fort Lee, NJ, Pioneer CEP fabricates custom low voltage switchboards, panelboards, and switchgear. A division of Pioneer Power Solutions, Inc., they manufacture and service specialty electrical transmission, distribution, and on-site power generation equipment for utility, industrial, commercial, and backup power markets.
Based in Alpharetta, GA, Actemium USA provides custom panel design and manufacturing for industrial clients. The company specializes in creating control panels tailored to specific requirements and applications. Dedicated to improving industrial performance, Actemium focuses on delivering manufacturing solutions to optimize client operations.
Based in Plymouth, MN, American Midwest Power (AMP) manufactures standard and custom electrical distribution equipment. They build switchboards and custom switchgear, designed for reliability and ease of installation. Their solutions serve commercial, residential solar, stadium, data center, and marina industries, integrating components from all major manufacturers.
Based in Pleasanton, CA, AMtec Industries Inc. manufactures custom control panels and power distribution solutions. The company provides custom cable assemblies, engineering, and quality services for diverse sectors. These include semiconductor, pharmaceutical, biotech, industrial controls, transportation, petrochemical, and amusement parks industries.
Automation Nth, based in Poway, CA, specializes in custom configurations, designs, and build-to-print services for industrial automation. They offer fast quote turnaround times, typically within 24 hours, utilizing a CNC panel fabrication machine to ensure precision and efficiency in manufacturing custom panels and switchboards.
Based in San Jose, CA, Bay Power specializes in manufacturing custom UL 891 switchboards. The company serves industrial and commercial clients, providing tailored power solutions designed for rapid deployment and efficient project completion.
Based in Slidell, LA, Beier Integrated Systems manufactures and services fully integrated marine systems, including automation, switchgear, and power distribution. They design, engineer, and fabricate main switchboards, panels, and consoles from raw materials at their 100,000 square-foot US facility.
Based in Magnolia, TX, Bison Profab manufactures custom metal electrical enclosures, traffic cabinets, and control boxes. They offer both stock and custom solutions using aluminum, carbon steel, and stainless steel, with diverse NEMA ratings for industrial and electrical applications.
Crown Technical Systems designs and manufactures reliable power distribution products, including medium-voltage, metal-clad, arc-resistant switchgear, relay panels, and control enclosures. They serve diverse sectors such as utilities, data centers, renewables, industrial, and transport, focusing on making the power grid safe, smart, dependable, and secure.
Gaylord Manufacturing, established in 1958, specializes in the production of electrical enclosures, fasteners, and metal stampings. They serve various industries requiring robust metal components. With a long history, the company operates as a direct manufacturer of these critical industrial parts.
Giga Energy Inc. manufactures UL 891 compliant low-voltage switchboards and other energy infrastructure equipment from Long Beach, CA. They serve contractors and distributors, offering custom pricing and lead times for solutions powering the modern grid and meeting AI demand.
Based in Glendora, CA, Hallmark Metals Inc. is an AS9100D certified company specializing in custom sheet metal fabrication, machining, and assembly since 1959. They manufacture enclosures, panels, cabinets, chassis, and housings for electrical and electronic applications, serving aerospace, defense, and medical industries.
Based in Fresno, CA, iCAD Automation engineers and manufactures UL 508A industrial control panels, offering comprehensive electrical solutions. They specialize in automation design and systems integration, providing custom solutions for clients in manufacturing, agriculture, and chemical sectors across the United States.
Based in Price, UT, IE Corp designs and manufactures custom switchgear and integrated electrical systems. They provide modular power, automation, and control solutions for critical industrial infrastructure. Specializing in low-profile and high-amperage switchgear, the company serves sectors like mining, oil & gas, data centers, and utilities.
Based in Modesto, CA, Industrial Electrical Company provides custom industrial control panels and offers retrofit and modernization services for existing panels. The company also specializes in irrigation and pump panels, addressing diverse power distribution and transmission requirements for various industries.
Based in Mentor, OH, Integra Enclosures manufactures comprehensive enclosure solutions. They offer integrated services including precision machining, custom printing, and accessory installation. This makes them a direct provider of components and custom systems relevant for industrial and commercial applications, including switchboard manufacturing.
Based in Hamilton, OH, JWF Technologies specializes in customized control panel design, manufacturing, and integration. The company provides engineering solutions, building high-quality components and serving various industries with large business capabilities and small business partnerships.
Based in Fort Mill, SC, MacLean Power Systems manufactures a wide range of products for electric utility and telecommunications markets. The company specializes in components and systems, including switchgear, for power distribution, transmission, and substation applications.
Based in Altavista, VA, Moore’s Electrical & Mechanical specializes in custom industrial control panel manufacturing. Holding UL508A certification for US and Canada, the company designs and builds tailored electrical control panels and switchboards. They offer comprehensive mechanical and plumbing solutions for commercial and industrial facilities.
Motor Controls Inc (MCI) directly manufactures UL-listed control panels, power distribution systems, switchgear, and switchboards. Based in Dallas, TX, the company engineers custom, scalable electrical control solutions for industrial, municipal, and commercial applications, leveraging extensive manufacturing facilities and specialized engineers.
Based in Springdale, AR, Multi-Craft Contractors, Inc. specializes in manufacturing custom control panels for industrial and process automation. They deliver comprehensive MEP+ contracting, including turnkey solutions, robotic integration, and advanced automation services. Their expertise enhances manufacturing efficiency and safety for complex projects.
Myers Power Products designs and manufactures advanced low voltage power distribution solutions, including custom switchboards, panelboards, and switchgear. Serving industrial and commercial markets across the United States, the company operates multiple manufacturing facilities to provide comprehensive electrical equipment.
Based in Fond du Lac, WI, iAutomation specializes in manufacturing custom industrial control panels and providing comprehensive engineering services. They offer programming, documentation, and application support for diverse sectors including machine tool, biotech, and food & beverage industries.
Powell Industries manufactures custom-engineered power distribution systems, including ANSI Metal-Clad and Metal-Enclosed Switchgear, IEC Switchgear, and NEMA Motor Control Bus Systems. They provide reliable solutions for diverse industrial markets such as oil and gas, electric utilities, renewables, and data centers.
Power Industrial Controls designs, builds, and installs customized solid-state electrical and industrial control panels. Serving industrial businesses, they provide solutions for diverse applications like motor, pump, PLC, and VFD controls. The company offers comprehensive services from planning through installation and ongoing support.
Electro-Matic Products specializes in manufacturing Power Distribution Panels (PDPs) for the industrial sector. Their engineering professionals provide expertise and custom solutions for various projects. The company also offers extensive product support and training, operating across multiple US locations including Michigan, Ohio, Florida, and Tennessee.
Based in Childersburg, AL, REAMCO provides custom electrical engineering, equipment design, and manufacturing for industrial sectors. They produce high-performance switchgear and power distribution systems, offering retrofit solutions and power system studies. As an Eaton OEM, REAMCO delivers start-to-finish capabilities with swift lead times.
Based in West Seneca, NY, SE-MAR Electric Company, Inc. specializes in the design, manufacturing, and installation of commercial and industrial control panels. The company provides comprehensive solutions for electrical distribution and control needs, serving various industrial clients with custom-engineered systems.
Based in Mentor, OH, South Shore Controls manufactures industry-grade electrical panels, enclosures, and control panels. The company provides contract fabricating and manufacturing services, offering scalable and code-compliant solutions. They specialize in industrial automation retrofits, new builds, and specialty equipment design from their in-house panel shop.
Based in Jacksonville, FL, Sun Coast Controls Mfg. specializes in crafting high-performance hydraulic and electric control systems. As a UL 508A / 698A Certified Manufacturer, they design Motor Control Centers (MCCs) for reliable performance and integration. The company serves OEMs and distributors with scalable solutions.
Based in Winneconne, WI, Switchgear Power Systems manufactures custom electrical switchgear and power distribution equipment. The company designs and constructs entirely custom solutions, including metal-clad, metal-enclosed, and pad-mount switchgear, along with power distribution centers, fused sectionalizers, and termination enclosures for global customers.
Based in Sussex, WI, The Industrial Controls Company, Inc. engineers, designs, and manufactures industrial control panels and systems. They offer comprehensive services, working from prototype development to full production. The company collaborates closely with clients to deliver custom-engineered solutions for diverse industrial applications.
Based in San Francisco, CA, Power Control Center specializes in designing and implementing comprehensive power control solutions. The company provides a range of electrical solutions, including the manufacturing of custom switchboards and related electrical distribution equipment.
Based in Rosemont, IL, Appleton, an Emerson brand, manufactures specialized power distribution equipment for demanding and hazardous industrial environments. They design and produce engineered solutions like switchracks, control panels, and circuit breakers, prioritizing durability, corrosion-resistance, and safety for industrial clients.
Based in Lafayette, IN, Advanced Power Technologies (APT) manufactures customizable low and medium voltage switchgear and switchboards. Their products include indoor/outdoor skid-mounted units, E-Houses, and containerized modules. APT integrates Smart Control Systems for advanced power management applications like microgrid, automatic paralleling, and peak shaving.
G&W Electric designs and manufactures electrical power transmission and distribution products, including advanced distribution switchgear. Based in Bolingbrook, IL, the company provides reclosers, switches, and cable accessories. They serve utility, industrial, and commercial markets, delivering robust and safe solutions for critical electrical infrastructure.
Based in Shelton, CT, Hubbell Incorporated provides trusted electrical solutions for critical infrastructure and power utility applications. Established in 1888, the company specializes in designing and manufacturing durable switchgear and related electrical products, focusing on electrification and energization for industrial needs.
ICC Manufacturing specializes in crafting custom control systems and Motor Control Centers (MCCs) tailored to specific project and process needs. The company also provides panel manufacturing services, holding ISO-9001 and ISO-45001 certifications to ensure quality and safety.
Industrial Electric Mfg. (IEM) designs and produces custom power distribution systems for industrial and commercial sectors. Specializing in UL 67 compliant panelboards and medium voltage electrical distribution equipment, the company leverages over 75 years of experience to provide scalable solutions.
ABB provides comprehensive electrification and automation solutions for various industries, including data centers, food and beverage, and building and construction. They specialize in technologies like switchgear, RPPs, and busway, enabling industries to achieve greater productivity, efficiency, and sustainability.
nVent manufactures low-voltage switchboards designed for performance and durability. Operating from Campbellsburg, KY, the company builds its critical power solutions to meet stringent UL 891 standards. They provide essential electrical infrastructure components for various industrial and commercial applications.
Schneider Electric manufactures low voltage (LV) switchboards, including the Square D LV QED series. Their switchboards are UL891 rated, designed to meet diverse industry needs for reliable and durable electrical distribution solutions.
Siemens manufactures arc mitigating, metal-enclosed, low-voltage switchgear solutions for enhanced protection in industrial and energy applications. The company also provides innovative grid software, industrial automation, robotics, and AI-driven solutions, optimizing operations and improving safety across diverse sectors.
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How to Choose a Company
- Verify the manufacturer holds valid certifications like UL 891 for low-voltage switchboards or UL 1558 for medium voltage switchgear, ensuring compliance with local Authority Having Jurisdiction (AHJ) requirements for your specific application.
- Assess their engineering team's ability to accurately calculate and meet your required short-circuit current rating (SCCR) and specify appropriate fault interruption devices, preventing unsafe or non-compliant installations.
- Confirm their experience in manufacturing switchboards with the exact NEMA enclosure rating (e.g., NEMA 3R for outdoor exposure, NEMA 12 for dust-tight industrial settings) and any required seismic certifications.
- Scrutinize their capabilities for integrating advanced metering, sophisticated protective relaying, or specific building management system (BMS) communication protocols (e.g., Modbus TCP/IP, BACnet) into the switchboard controls.
- Evaluate their design team's proficiency in handling complex bus configurations, such as double-ended substations, main-tie-main transfer schemes, or bus duct transitions, ensuring future scalability and operational flexibility.
- Insist on comprehensive factory acceptance testing (FAT) procedures, including full primary current injection testing on protective devices and continuity checks, to minimize commissioning delays and expensive field adjustments.
- Be cautious of manufacturers offering exceptionally short lead times for highly customized solutions or specialized components like non-standard circuit breakers; this often indicates potential shortcuts in engineering review, reliance on unverified stock, or an inability to manage the supply chain for critical long-lead items, leading to significant project delays.
Frequently Asked Questions
What's the fundamental difference between a switchboard and switchgear, and when should I specify one over the other?
While both manage and distribute electricity, switchboards (typically UL 891) are generally floor-mounted, open-front or dead-front assemblies operating at lower voltages (up to 600V) and house circuit breakers and other protective devices. Switchgear (e.g., UL 1558 for medium voltage) is often enclosed, has a more robust metal-clad or metal-enclosed construction, handles higher voltages (above 600V), and features more sophisticated protective relaying and interlocking mechanisms for enhanced safety and fault isolation. The choice depends on voltage, fault current levels, and required arc flash mitigation.
How critical is an arc flash study when designing or specifying a new switchboard?
An arc flash study is extremely critical. It determines the potential incident energy levels at various points in your electrical system, including the switchboard, which is vital for worker safety and compliance with OSHA and NFPA 70E standards. This study directly impacts the selection of appropriate personal protective equipment (PPE) and helps engineers design for arc flash mitigation through protective device coordination, current limiting devices, or arc-resistant switchboard designs where applicable.
What specific data does a switchboard manufacturer need from me to accurately determine the short-circuit current rating (SCCR)?
To accurately specify SCCR, manufacturers require your facility's utility transformer KVA rating, impedance, and secondary voltage; the length and size of service entrance conductors; and the maximum available fault current at the service entrance from your utility provider. Additionally, they'll need details on any upstream current-limiting devices and the characteristics of all connected loads and feeder conductors within the proposed switchboard's scope.
Are field modifications to a UL-listed switchboard permissible, or does it void the listing?
Generally, significant field modifications to a UL-listed switchboard will void its UL listing unless performed by the original manufacturer or under their specific authorization and supervision. Even minor changes can impact safety, short-circuit current ratings, or other critical design parameters. For any proposed modification, always consult the original manufacturer to ensure compliance and maintain safety certifications.
What NEMA enclosure rating should I specify for a switchboard destined for an outdoor installation?
For outdoor installations, you'll typically need a NEMA 3R, NEMA 4, or NEMA 4X enclosure rating, depending on environmental conditions. NEMA 3R provides protection against rain, sleet, snow, and external ice formation. NEMA 4 adds protection against windblown dust and hose-directed water, while NEMA 4X offers the same plus corrosion resistance, ideal for coastal or harsh industrial environments. Your specific site conditions will dictate the appropriate level of protection required.
Can modern switchboards integrate with my building management system (BMS) for enhanced monitoring and control?
Absolutely. Modern switchboards are increasingly designed for seamless integration with BMS and energy management systems. They can incorporate smart meters, protective relays, and communication modules that utilize common protocols like Modbus TCP/IP, BACnet, or Ethernet/IP. This enables real-time monitoring of energy consumption, power quality, breaker status, and even remote control capabilities, providing granular data for optimizing building operations and energy efficiency.