Coils & Wireforms

A coil is a length of wire wound into turns to create a magnetic field when energised; a wireform is wire bent and formed into a precise shape. Together they are essential components in switchgear, circuit breakers, relays, solenoids and countless electrical and electronic assemblies. Voltkon (UVA Group) manufactures copper and enamelled-wire coils and precision wireforms for OEMs worldwide.

From solenoid, trip and operating coils to bobbins and formed wire components, we wind and form on automated equipment, supplying parts loose or built into finished sub-assemblies. Decades of experience across electrical and electronic products let us deliver consistent quality at high volume.

Why Choose UVA?

  • Automated Coil Winding: Consistent turns, tension and layering for repeatable electrical performance
  • Coils & Wireforms Under One Roof: Wound coils and formed wire components from a single supplier
  • Loose or as Sub-Assemblies: Supplied bare or integrated with terminals, contacts and mouldings
  • ISO 9001 / 14001 / 45001 Certified: Consistent quality, environmental and safety management across our units
  • High-Volume Production: Scalable winding and forming capacity tailored to client demand

With dedicated plants across India, UVA Group is a trusted partner for global OEMs seeking reliable, cost-effective and high-quality coils, wireforms and wound sub-assemblies.

Our coil winding and wireforming support a range of conductor and wire materials, including:

  • Copper magnet wire (bare and enamelled)
  • Enamelled copper wire (polyurethane, polyester, polyester-imide grades)
  • Aluminium winding wire
  • Tinned and silver-plated copper wire
  • Spring steel and stainless steel wire (wireforms)
  • Brass and phosphor-bronze wire
  • Insulation: sleeving, bobbins, tapes and varnishes

This lets us match the right wire and insulation system to each application, from fine-gauge trip coils to robust formed wire components.

Our facilities cover the full process chain, from winding and forming through to terminated, tested sub-assemblies. Our core capabilities include:

  • Automated Coil Winding: Layer, random and precision winding across a range of wire gauges
  • Bobbin & Bobbin-less Coils: Coils wound on formers and bobbins or self-supporting
  • Wireforming & Bending: CNC and manual forming of wire into precise shapes
  • Termination: Soldering, crimping, welding and tinning of coil leads
  • Insulation & Impregnation: Taping, sleeving and varnish impregnation for durability
  • Assembly Lines: Building coils and wireforms into sub-assemblies and finished products
  • Electrical Testing: Resistance, continuity and hi-pot checks

    UVA Group provides a range of in-house and partner secondary and finishing operations to deliver complete, ready-to-use coils and wireforms. These include:

    • Wire plating & coating
      • Tin plating
      • Silver plating
      • Nickel plating
      • Enamel / insulation coating
      • Varnish impregnation
      • Epoxy powder coating
    • Taping & sleeving
    • Lead termination & tinning
    • Assembly & sub-assembly
    • Electrical testing & packing

    UVA Group serves a diverse range of industries with coils and wireforms tailored to each application. Typical products we produce include:

    • Switchgear: Operating coils, trip coils, closing coils, shading coils, wound sub-assemblies
    • MCB / Circuit Breakers: Trip coils, solenoid coils, bimetal wireforms, contact springs
    • Solenoids & Relays: Solenoid coils, relay coils, bobbins, formed wire terminals
    • Electronics: Inductors, chokes, sensor coils, formed connector pins
    • Industrial & Appliances: Motor coils, transformer windings, heating-element wireforms
    • Custom Coils & Wireforms: Bespoke wound and formed components to customer drawings and specifications

    We operate a versatile coil-winding and wireforming infrastructure built for high-volume production of precision wound and formed components, supported by in-house tooling and a quality lab.

    • Automated and semi-automatic coil winding machines across a range of wire gauges
    • CNC wireforming and spring-forming equipment
    • Termination equipment for soldering, crimping and welding
    • Varnish impregnation and insulation facilities
    • Quality lab with electrical and dimensional testing

    Looking for a custom part?