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    Quote

    Fast Track to a Quote

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    • TRIAD Transformer FD4-28
    • TRIAD Transformer FD4-28
    • TRIAD Transformer FD4-28
    • TRIAD Transformer FD4-28
    1/4

    • Certification | Testing
      Factory Certified

    • Refund guarantee
      24h refund guarantee

    • Secure Payment
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    Brand New
    In Stock

    TRIAD Transformer FD4-28

    35 inquiries last 6 mos.
    US $ 35 .06 / ea
    Registered Members Enjoy Exclusive Discounts
    Join Now >
    Quantity
    9
    MOQ : 9

    Payment Methods

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    • 100% Original
      Genuine OEM Parts

    • Fast Delivery
      Shipped via FedEx / DHL / UPS

    • 12-Month Warranty
      Worry-Free Coverage

    • Secure Packaging
      Safe & Reliable

    • 5,000+ Global Suppliers
      Trusted by Professionals

    Professional Model-Matching System

    Send us your model numbers or nameplate details.
    We will match your request with our 5,000+ verified suppliers and issue a quotation.

    Electrical Rating:6.0 VA
    Output Rating:28.0 V CT at 0.2 A
    Primary Voltage:115 V/230 V
    Primary Frequency:50 Hz/60 Hz

    Why Global Buyers Choose O&Kmarts

    O&Kmarts:
    • Access to a wide range of SKUs across multiple brands and series
    • One RFQ connects you to 5,000+ global supplier quotes
    • Better availability for urgent and hard-to-find parts
    • Faster global delivery via FedEx / DHL / UPS
    • Easier access to rare and high-value models
    • Flexible sourcing for individual parts or complete solutions
    • Lower MOQs and more adaptable buying options
    • Multi-brand procurement in one order
    • OEM replacement and alternative model solutions available
    • Fewer intermediaries, ensuring more competitive pricing

    Why Global Buyers Choose O&Kmarts

    Local Suppliers:
    • Limited to fast-moving SKUs only
    • Limited local market availability
    • Inventory frequently fails to meet urgent demand
    • Long replenishment cycles, often taking weeks
    • Rarely stock high-value compressors (e.g. Copeland YHV119)
    • Frequently require bundled purchases
    • Rigid and difficult MOQ negotiations
    • Limited brand selection
    • Minimal or no customization capability
    • Higher local distribution and markup costs

    Top Questions from OKmarts Buyers

    • Q: What financial protections do I have if the shipped goods do not match the ordered part numbers or technical specifications?

      A: OKmarts operates under a strict Order Accuracy Guarantee. If the part numbers delivered do not match your approved Proforma Invoice or Purchase Order due to our fulfillment error, we will issue a full refund or expedite a replacement shipment immediately, covering all return international freight charges.

    • Q: How can I verify that a product on OKmarts is brand new and not "New Old Stock" (NOS) with degraded internal components?

      A: Our warehouse management system strictly tracks manufacturing date codes, especially for sensitive components like VFD electrolytic capacitors or rubber seals. We explicitly state product conditions on the listing and can provide batch date codes prior to shipment for critical applications.

    • Q: Can we request customized modifications for heavy wear components or specialized industrial parts?

      A: Through our network of partner factories and flexible manufacturing technologies, we support customized production runs for specific structural or wear components. Technical drawings (CAD/STEP files) must be submitted for engineering review and custom prototyping quotes.

    FD4-28
    TRIAD Transformer FD4-28 - triad - transformer
    High Efficiency
    Stable Performance
    Long Service Life
    Explore More Triad Transformer

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    Q&A

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    • Q: How can I register as a member, and what benefits do members have?

      A: Registering as a member is very simple; you just need to provide some basic information. Members can enjoy exclusive promotional activities, rewards points, fast checkout, and dedicated customer service privileges.

    • Q: Are the actual colors of the products consistent with the pictures?

      A: We do our best to ensure the accuracy of product images. However, due to variations in display devices and lighting conditions, there may be slight differences in actual colors. We provide detailed color descriptions to assist you in making better choices.

    • Q: How to check the sales ranking and rating of a product?

      A: You can easily view the sales ranking and ratings of products by visiting the product page. The rankings and ratings are prominently displayed, providing valuable insights from other customers.


    Customer reviews

    4.4
    Based on 5 reviews
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    3
    0
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    • Mar 13, 2026

      Albert Derosier
      Fácil y eficaz. Todo llegó a tiempo como se había prometido.
      Helpful?
      (2)
      (0)

    • Oct 21, 2025

      Carol Couture
      Working with Anne is a real pleasure.
      Helpful?
      (0)
      (0)
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