Finding the right solenoid coil manufacturer in the USA is harder than it looks.
You search online, and you're instantly hit with dozens of suppliers — all claiming to offer "high-quality," "custom," and "industry-leading" solenoid coils. But when it comes to actual delivery reliability, UL certification, custom winding capabilities, or simply getting a human on the phone who understands your specs — the list gets very short, very fast.
Whether you're an OEM engineer sourcing components for industrial automation, a procurement manager evaluating American solenoid coil suppliers for long-term contracts, or a product team looking for a domestic manufacturer to avoid overseas supply chain risks — you already know the real challenge isn't finding a vendor. It's finding the right one.
That's exactly why we've done the research for you.
In this guide, we break down the top 5 solenoid coil manufacturers in the USA — evaluated on manufacturing capability, product range, customization options, industries served, and reputation. Whether you need AC/DC solenoid coils, custom wound coils, or high-temperature solenoid assemblies, this list will give you a clear starting point to make a confident sourcing decision.
1. Ningbo Beris Electronic Company
Company Profile
Ningbo BRS Electronics Co., Ltd. (BRS) is a manufacturer specializing in the design, development and manufacture of solenoid valve coils, armature components and connectors.
Location: No. 12, Longxing Road, Longguan Town, Ningbo City, China 315166
Company Type: Manufacturer
Website: https://www.valvecoil.com/
Main Products
- Pneumatic Solenoid
- Hydraulic solenoid
- Textile machine electromagnetic coil
- Solenoid coil
- Automotive Solenoid
1. KELCO Industries (Guardian Electric)
Founded: 1905
Headquarters: 1425 Lake Avenue, Woodstock, Illinois
Main Solenoid Coil Products & Services
Through its Guardian Electric Manufacturing division, KELCO Industries designs and manufactures tubular solenoids, open-frame solenoids, latching solenoids, laminated AC solenoids, precision-wound coils, and custom bobbins. All products are built in the USA to AS9100 and MIL-DTL standards. Guardian offers in-house coil winding, injection-molded bobbins, and state-of-the-art CNC machining for fully custom assemblies. AC/DC configurations, push/pull types, and magnetic latching designs are all available. Custom spring kits, hardware accessories, and value-added assembly packages are offered to help streamline your build process.
Company Overview
If you need solenoid coils for aerospace, defense, industrial automation, or access control, KELCO Industries — through its Guardian Electric division — is one of the most complete domestic sources available. The company unites four American manufacturing leaders (Guardian Electric, Flex-Weld, WCT, and AMT) under one roof, giving procurement teams a reliable single-source partner from concept to production. Guardian is AS9100/ISO certified and ITAR registered, making it a trusted choice for engineers working in regulated industries. What sets Guardian apart for sourcing teams is their in-house capability: they mold their own bobbins, wind their own coils, and machine all custom components internally — which translates to tighter tolerances, shorter lead times, and more predictable quality. Whether you need a standard catalog unit or a fully engineered custom solenoid assembly, Guardian's engineering team works directly with you on force curves, stroke specifications, duty cycles, and voltage configurations.
2. Sag Harbor Industries, Inc.
Founded: 1946
Headquarters: 1668 Sag Harbor Turnpike, Sag Harbor, New York 11963 (additional facility in Farmville, NC)
Main Solenoid Coil Products & Services
Sag Harbor Industries manufactures a comprehensive range of solenoid coils, toroidal coils, field coils, encapsulated coils, molded coils, self-supported coils, and varnished coils. Custom wound solenoid coils are a core specialty, with capabilities spanning fine wire (sub-miniature) to heavy gauge power wire. The company also provides electric transformers, PCB box builds, cable assemblies, and motor windings. Engineering assistance, design consultation, prototyping, and sample production are available prior to full production runs.
Company Overview
Founded in 1946 by Charles Edison (son of Thomas Edison), Sag Harbor Industries has spent nearly eight decades building a reputation for custom-engineered electric coils made entirely in the USA. For procurement engineers evaluating domestic solenoid coil suppliers, SHI offers a practical advantage: they treat every project as a partnership, providing a 24-hour response time, RoHS compliance, and direct on-site communication throughout the project lifecycle. Their ISO 9001:2015 certification backs up their quality claims, and their two U.S. facilities (New York and North Carolina) provide supply chain redundancy. SHI has a proven track record across demanding sectors including aerospace (having produced stators for satellite communications with COM DEV International), medical devices, fluid power, and industrial automation. If your application is non-standard — irregular shapes, uncommon wire gauges, or bobbin-less designs — SHI's self-supported coil capabilities are specifically built for those challenges. Prototypes and samples are available before committing to full production quantities.
3. Decco (Detroit Coil Company) — A ROSS Controls Company
Founded: 1912
Headquarters: 2435 Hilton Road, Ferndale, Michigan
Main Solenoid Coil Products & Services
Decco manufactures a broad line of industrial solenoids and replacement coils, including laminated solenoids, DC tubular solenoids, molded laminated solenoids, air packaged solenoids, and oil immersed solenoids. Pilot valve operators are also a key product line. All Decco coils are made from UL-approved materials and are RoHS compliant. The company also provides custom design engineering services for complex or application-specific solenoid requirements across a wide range of voltage configurations and duty cycles.
Company Overview
With over 110 years in operation, Decco (Detroit Coil Company) is one of the oldest and most established solenoid coil manufacturers in the United States. Originally built to supply the Detroit automotive industry — including starter solenoids for Ford's Model A and Model T — Decco has evolved into a global industrial solenoid supplier now operating under ROSS Controls, a respected name in fluid power and pneumatic systems. For buyers, this heritage matters: Decco products are engineered for durability, low energy consumption, low maintenance costs, and long service life. Their solenoids are specifically tested and finished to hold 60-cycle hum below audible levels, an important consideration for workplace safety in industrial environments. Decco serves a wide range of industries including power generation, fluid power, automotive, medical devices, chemical mixing, packaging, machine controls, and security systems. If you are replacing an existing Decco solenoid or looking for a proven drop-in replacement coil, their standard product catalog is extensive and well-supported.
4. US Cotronics
Founded: 1985
Headquarters: Fairbury, Illinois
Main Solenoid Coil Products & Services
US Cotronics manufactures custom solenoid coils, bobbin wound coils, encapsulated and overmolded coils, tape-wrapped coils, self-supported coils, choke coils, inductors, transformer coils, and voice coils. Precision wire cutting, stripping, and lead wire assembly fabrication are also offered in-house. The company supports both low and high production volumes, with an annual output exceeding 750,000 custom-built products at sub-10 ppm quality.
Company Overview
US Cotronics is a family-owned, woman-owned American manufacturer that has operated out of Fairbury, Illinois since 1985. As an ISO 9001:2015 certified contract manufacturer, the company is particularly well-suited for buyers who need consistent, high-volume production with documented quality control — their PPAP and SPC chart tracking processes provide the supply chain transparency that automotive and aerospace OEMs require. US Cotronics maintains a greater than 99% on-time delivery rate, which is a meaningful metric for procurement managers managing tight production schedules. Their solenoid coil expertise spans aerospace and defense, medical devices, automotive electronics, heavy equipment, agriculture, and marine industries. Being a single-source manufacturer means you can consolidate your coil, winding, and wire assembly supply chain under one vendor, reducing complexity and communication overhead. For buyers looking for a domestic, certified, and reliable mid-to-high volume coil supplier in the Midwest, US Cotronics consistently ranks among customers' top vendor ratings.
5. Classic Coil Company Inc.
Founded: 1973
Headquarters: 205 Century Drive, Bristol, Connecticut 06010
Main Solenoid Coil Products & Services
Classic Coil Company manufactures solenoid coils, valve coils, brake and clutch coils, relay coils, motor control and switchgear coils, sensor coils, guidance system coils, LVDT/RVDT coils, aerospace coils, induction coils, and molded-encapsulated coils. The company also produces fine wire specialty micro coils using exotic materials including titanium, platinum, gold, and silver for medical and defense applications. Wire gauges range from #2 to #58 AWG. Additional capabilities include injection molding, laser cutting, laser part marking, 3D printing, varnish impregnation, and non-destructive testing.
Company Overview
With over 50 years of operation, Classic Coil Company is a highly specialized coil manufacturer that stands out for its ability to serve both standard industrial solenoid applications and highly demanding precision sectors simultaneously. For procurement engineers in the medical, military, or aerospace industries, Classic Coil's capabilities are particularly notable: they have developed proprietary termination methods for ultra-fine 58 AWG wire used in implantable medical devices, and they hold ITAR registration and DFARS compliance for defense-related programs. Their 26,000-square-foot Bristol, Connecticut facility operates under ISO 9001:2015 certification and supports semi-clean room manufacturing conditions. Classic Coil also offers UL listed insulation systems ranging from Class B through Class H, providing options for both standard and high-temperature operating environments. The company offers engineering assistance as a standard service, making them a practical partner for teams developing new coil designs or transitioning from a legacy supplier. Kanban and JIT delivery programs are available to support lean manufacturing operations.
6. Quality Coils, Inc.
Founded: 1965
Headquarters: 748 Middle Street, Bristol, Connecticut 06010
Main Solenoid Coil Products & Services
Quality Coils manufactures encapsulated coils, over-molded electromagnetic coils, self-supported coils, tape-wrapped coils, toroid coils, and custom coil assemblies. Applications served include solenoid valves, HVAC and refrigeration systems, industrial controls, electronic clutches and brakes, and automotive electronics. The company also provides over-mold encapsulation tooling, bobbin design services, and contract manufacturing for custom coil assemblies. All products are ISO 9001:2015 certified and made in the USA.
Company Overview
Established in 1965 and now in its third generation of family ownership, Quality Coils, Inc. (QCI) is a long-standing and trusted name in electromagnetic coil manufacturing. Based in Bristol, Connecticut — the same region as several other specialized coil manufacturers — QCI has built its reputation on consistent quality, competitive pricing, and a genuine customer service approach. For buyers, QCI's multi-decade track record across domestic and international markets means you are working with a supplier that has seen a wide variety of application challenges and has the institutional knowledge to solve them efficiently. Their product range covers encapsulated, self-supported, tape-wrapped, and toroidal coil configurations, making them a versatile choice for engineers sourcing coils across industrial controls, HVAC, refrigeration, and automotive applications. QCI actively invests in R&D to develop modern coil designs that keep pace with evolving customer specifications. Custom coil assemblies can be fully produced by QCI to reduce your internal labor costs. If your program requires a supplier who is easy to communicate with, flexible on order volumes, and ISO-certified, Quality Coils is worth a direct conversation.
7. Custom Coils, Inc.
Founded: 1978
Headquarters: Benicia, California (23,000 sq. ft. facility)
Main Solenoid Coil Products & Services
Custom Coils, Inc. manufactures a wide range of electromagnetic coil products including custom solenoids (continuous duty and intermittent duty), proportional solenoids, latching solenoids, rotary solenoids, electromagnets, RF coil assemblies, air and ferrite core inductors, and water-cooled high-power coils. The company supports both coreless and bobbin-wound configurations and winds conductor materials ranging from standard magnet wire to solid or hollow-core copper and aluminum. Services include Design for Manufacturability (DFM) consultation, thermal modeling, prototype development, tooling fabrication, and scalable production from single units to large volume runs. OEM repair and refurbishment services are also offered.
Company Overview
For engineers who need a solenoid coil supplier that can handle genuinely challenging specifications — unusual geometries, tight space constraints, extreme thermal environments, or high-precision force requirements — Custom Coils, Inc. is one of the most capable domestic partners available. Operating from its 23,000-square-foot Benicia, California facility since 1978, the company has built a strong reputation in high-stakes sectors including aerospace, medical imaging, semiconductor equipment, and defense. What distinguishes Custom Coils for technical buyers is its end-to-end engineering model: their engineers work with you from concept through full-scale production, developing tooling and manufacturing methods optimized specifically for your design rather than adapting a generic process. They have a documented track record of co-developing electromagnets for plasma ionization systems, MRI and magnetic particle imaging machines, and precision semiconductor etch tools. If your project involves non-standard coil geometries, challenging cooling requirements, or materials beyond standard copper — such as hollow-core conductors for water-cooled electromagnets — Custom Coils has the design depth to solve it efficiently. Prototypes and DFM analysis are offered upfront to reduce costly redesign cycles later in your program.
8. Magnatrol Valve Corp.
Founded: 1936
Headquarters: 67 Fifth Avenue, Hawthorne, New Jersey 07507
Main Solenoid Coil Products & Services
Magnatrol manufactures solenoid coils alongside its core product line of 2-way bronze and stainless steel solenoid valves, including direct-acting and internal pilot-operated designs. Replacement coils and strainers are available as standalone components. Coils are offered in continuous-duty configurations for all voltages and are made from UL-approved materials, with packless construction for easy in-pipeline servicing. Through its Clark-Cooper Division (acquired 2003), Magnatrol also offers high-pressure solenoid valves for pressures up to 10,000 PSI, custom-engineered valves in special alloys, and solutions for extreme temperature applications.
Company Overview
With nearly 90 years of manufacturing history, Magnatrol Valve Corp. is a uniquely specialized option for buyers who need solenoid coils in the context of complete fluid control systems. If your procurement need involves replacing or upgrading coils within solenoid valve assemblies — particularly for demanding process control applications — Magnatrol's vertically integrated model means coils and valves are engineered and tested together in-house, reducing compatibility risk. Magnatrol serves some of the most demanding fluid media environments in industry: corrosive chemicals, cryogenic fluids, oxygen, steam, solvents, and high-pressure gases. Their valves and coils are actively deployed across chemical processing, petroleum, pharmaceuticals, water and waste treatment, food production, marine and Navy applications, and power generation. All products are manufactured and tested in-house under rigorous quality assurance standards, with a strong commitment to on-time delivery. For OEMs building process control equipment who need a long-standing, domestically-manufactured coil and valve source, Magnatrol is a dependable and well-supported supplier with a broad catalog and custom engineering capability through its Clark-Cooper Division.
9. Able Coil & Electronics Co., Inc.
Founded: 1969
Headquarters: 837 Boston Turnpike, Bolton, Connecticut 06043 (40,000+ sq. ft. facility)
Main Solenoid Coil Products & Services
Able Coil & Electronics manufactures precision-wound solenoid coils, toroidal coils, custom transformers, self-supporting coils, fine wire coil assemblies, encapsulated coils, cable and connector harnesses, and integrated electromechanical assemblies. The company specializes in tight-tolerance, complex-geometry coil winding for high-reliability applications. Manufacturing capabilities include bobbin winding, hand winding, multi-spindle winding, vacuum impregnation, encapsulation, and potting. Engineering services cover custom specification development, collaborative prototyping, and full-scale production from single prototypes to millions of assemblies per year.
Company Overview
Now in its sixth decade of operation, Able Coil & Electronics has earned a strong reputation among engineers working in fields where a coil failure is not an option. Founded in 1969 by Ken Rockefeller — who identified an unmet need for reliable, precision coil winding early in his career — the company built its initial customer base supplying precision assemblies to military switch and relay manufacturers, a demanding entry point that shaped the quality culture the company maintains today. For procurement teams sourcing solenoid coils for aerospace, defense, medical, laser, or communications applications, Able Coil's 40,000-square-foot Bolton, Connecticut facility is equipped to handle stringent environmental requirements including extreme temperature, vibration, and moisture exposure. The company produces millions of assemblies annually across a diverse customer base, with flexible prototyping that allows engineering teams to iterate designs before committing to production volumes. Every product is built to a custom specification — there are no off-the-shelf compromises — making Able Coil a strong fit when your application has performance requirements that standard catalog parts cannot meet.
10. Industrial Coils, LLC
Founded: 1948
Headquarters: 809 E. Fir Avenue, McAllen, Texas 78501 (multiple locations in southern Texas)
Main Solenoid Coil Products & Services
Industrial Coils manufactures custom solenoid coils for solenoid-actuated valves, tape-wrapped electric coils, encapsulated coils, molded coils, small transformers, chokes, relays, and printed circuit board (PCB) components. Secondary manufacturing services include wire stripping, wire termination, resistance welding, epoxy potting, varnishing, vacuum impregnating, wire harness assembly, electronic assembly, electromechanical assembly, and thermoplastic injection molding. Low-cost tooling and prototyping are available for new product development. All materials used are UL listed and CSA approved.
Company Overview
Industrial Coils LLC is a third-generation family-owned manufacturer with roots stretching back to 1948 — a lineage that reflects decades of hands-on experience and an institutional knowledge of what it takes to support OEM customers over the long term. Originally founded as a coil supplier to the gaming and amusement industry in Chicago, the company expanded into Texas in the late 1950s and now operates multiple facilities across southern Texas. For OEM procurement managers who prioritize a combination of competitive pricing, consistent quality, and reliable delivery, Industrial Coils is built around exactly that philosophy — stating directly that price, quality, and delivery are the three pillars of every customer relationship. Their UL-listed and CSA-approved materials make the company suitable for buyers with compliance requirements in their target markets. Industrial Coils serves a broad customer base including irrigation equipment, agricultural machinery, automotive, oil and gas, food processing, hydraulic systems, military, and office equipment manufacturers. With production capabilities ranging from single prototype coils to high-volume runs using multi-head automated winding equipment, the company can scale to meet changing demand without requiring you to switch suppliers as your program grows.
Need Custom Solenoid Coils at a More Affordable Price? Consider Ningbo Beris Electronic Co., Ltd.
The US manufacturers listed above offer excellent quality and domestic supply chain advantages — but for buyers working with tighter budgets or higher production volumes, sourcing custom solenoid coils from a trusted Chinese manufacturer is a smart, cost-effective alternative worth considering.
Ningbo Beris Electronic Co., Ltd., based in Ningbo, China, is a dedicated solenoid valve coil manufacturer with deep OEM experience serving international customers. Unlike general electronics suppliers, Beris focuses specifically on solenoid valve coils, DIN-standard coils, waterproof coils, and custom-wound coil assemblies — exactly the product categories US industrial buyers need.
Why US Buyers Choose Beris
- Custom manufacturing: Beris produces coils to your exact voltage, resistance, insulation class, connector type, and dimensional specifications — from standard DIN 43650 designs to fully custom assemblies.
- Recognized certifications: Products meet CE, UL, and IP65/IP67 ratings, aligning with US OEM compliance requirements.
- Significantly lower pricing: Beris consistently offers competitive unit pricing well below domestic US manufacturers — a meaningful advantage for cost-sensitive or high-volume programs.
- International shipping experience: Established export processes for North American customers, covering logistics, customs documentation, and safe packaging for transit.
If your application does not require ITAR or MIL-SPEC compliance, and your specifications are well-defined, Ningbo Beris Electronic Co., Ltd. is worth a direct inquiry. Requesting a sample quote is a low-risk first step to evaluate whether their capabilities and pricing fit your sourcing needs.
Conclusion
The US market has a wide range of solenoid coil needs — from heavy-duty hydraulic systems in manufacturing plants to precision pneumatic controls in automation lines. Choosing the right supplier means balancing quality, lead time, certifications, and cost.
For buyers seeking a reliable long-term partner, Beris Electronics has built a strong reputation among North American clients. With full product lines covering pneumatic solenoid coils, hydraulic solenoid coils, automotive solenoids, and custom OEM solutions, Beris is equipped to handle both standard orders and highly specific project requirements. All products are manufactured under strict quality control and are compatible with mainstream US voltage standards and connector types.
Whether you're a procurement manager sourcing in bulk or an engineer looking for a custom coil design, feel free to reach out to Beris Electronics — the team is ready to provide product recommendations, technical support, and competitive quotes tailored to your needs.
Frequently Asked Questions About Solenoid Coils in the USA
Q1: What certifications should I look for when sourcing solenoid coils for the US market?
When purchasing solenoid coils for use in the United States, look for products that comply with UL (Underwriters Laboratories) standards, CE certification, and ISO 9001 quality management certification. These ensure the coils meet American safety and performance requirements across industrial, hydraulic, and pneumatic applications.
Q2: What voltage standards are commonly used for solenoid coils in the USA?
In the US, solenoid coils typically operate at AC voltages of 110V/120V (60Hz) or DC voltages of 12V, 24V, and 48V. Always confirm the voltage and frequency specifications before ordering, as the US standard (60Hz) differs from most other countries (50Hz).
Q3: How long does it take to ship solenoid coils from overseas manufacturers to the USA?
Shipping time varies by supplier and method. Standard sea freight from China typically takes 25–40 days, while air freight takes 5–10 business days. Many experienced overseas manufacturers, such as Beris Electronics, are familiar with US import procedures and can assist with customs documentation to ensure smooth delivery.
Q4: Are there minimum order quantity (MOQ) requirements when sourcing solenoid coils for the US market?
MOQ varies by manufacturer. Domestic US manufacturers often accept smaller orders but at a higher unit cost. Overseas suppliers typically offer more competitive pricing with moderate MOQs. It's advisable to discuss your project volume upfront to negotiate the best terms.
Q5: How do I ensure the solenoid coil I order is compatible with my existing valve system?
You'll need to confirm key parameters including inner diameter (bore size), mounting dimensions, operating voltage, power consumption (wattage), duty cycle (continuous or intermittent), and connector type (DIN 43650, AMP, Hirschmann, etc.). Reputable manufacturers will request these specifications before production to guarantee compatibility.
Q6: Can solenoid coils be custom-manufactured to meet specific US project requirements?
Yes. Many manufacturers offer OEM and custom coil solutions. Whether you need a specific voltage, enclosure rating (IP65, IP67, IP69K), or coil geometry, experienced suppliers can engineer coils tailored to your exact application — from HVAC systems to agricultural machinery widely used across the US.
